Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested tomato plants plots assessed as nematode population per cm3 soil measured 110 days post dose following field application at 2 kg of active ingredient/hectare (Rvb = 1.38 to 2.11 nematode population/cm3 soil)
|
Rotylenchulus reniformis
|
1.8
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested tomato plants plots assessed as nematode population per cm3 soil measured 110 days post dose following field application at 1 kg of active ingredient/hectare (Rvb = 1.38 to 2.11 nematode population/cm3 soil)
|
Rotylenchulus reniformis
|
2.2
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested tomato plants plots assessed as nematode population per cm3 soil measured 110 days post dose following field application at 2 kg of active ingredient/hectare (Rvb = 2.24 to 3.51 J2 population/cm3 soil)
|
Meloidogyne incognita
|
1.9
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested tomato plants plots assessed as nematode population per cm3 soil measured 110 days post dose following field application at 1 kg of active ingredient/hectare (Rvb = 2.24 to 3.51 J2 population/cm3 soil)
|
Meloidogyne incognita
|
2.86
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested tomato plants plots assessed as nematode population per cm3 soil measured 55 days post dose following field application at 2 kg of active ingredient/hectare (Rvb = 1.38 to 2.11 nematode population/cm3 soil)
|
Rotylenchulus reniformis
|
3.05
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested tomato plants plots assessed as nematode population per cm3 soil measured 55 days post dose following field application at 1 kg of active ingredient/hectare (Rvb = 1.38 to 2.11 nematode population/cm3 soil)
|
Rotylenchulus reniformis
|
4.03
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested tomato plants plots assessed as nematode population per cm3 soil measured 55 days post dose following field application at 2 kg of active ingredient/hectare (Rvb = 2.24 to 3.51 J2 population/cm3 soil)
|
Meloidogyne incognita
|
1.51
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested tomato plants plots assessed as nematode population per cm3 soil measured 55 days post dose following field application at 1 kg of active ingredient/hectare (Rvb = 2.24 to 3.51 J2 population/cm3 soil)
|
Meloidogyne incognita
|
2.22
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested tomato plants plots assessed as reduction in nematode population measured 110 days post dose following field application at 1 to 2 kg of active ingredient/hectare
|
Rotylenchulus reniformis
|
59.0
%
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested in tomato plants plots assessed as reduction in nematode population measured 55 days post dose following field application at 1 to 2 kg of active ingredient/hectare
|
Rotylenchulus reniformis
|
23.0
%
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested chickpea plants plots assessed as reduction in nematode population measured 110 days post dose following field application at 1 to 2 kg of active ingredient/hectare
|
Rotylenchulus reniformis
|
23.0
%
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested chickpea plants plots assessed as reduction in nematode population measured 55 days post dose following field application at 1 to 2 kg of active ingredient/hectare
|
Rotylenchulus reniformis
|
37.0
%
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested tomato plants plots assessed as reduction in nematode population measured 110 days post dose following field application at 1 to 2 kg of active ingredient/hectare
|
Meloidogyne incognita
|
45.0
%
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested chickpea plants plots assessed as reduction in nematode population measured 110 days post dose following field application at 1 to 2 kg of active ingredient/hectare
|
Meloidogyne incognita
|
15.0
%
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested tomato plants plots assessed as reduction in nematode population measured 55 days post dose following field application at 1 to 2 kg of active ingredient/hectare
|
Meloidogyne incognita
|
52.0
%
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested chickpea plants plots assessed as reduction in nematode population measured 55 days post dose following field application at 1 to 2 kg of active ingredient/hectare
|
Meloidogyne incognita
|
33.0
%
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested chickpea plants plots assessed as nematode population per cm3 soil measured 110 days post dose following field application at 2 kg of active ingredient/hectare (Rvb = 1.8 to 3.15 nematode population/cm3 soil)
|
Rotylenchulus reniformis
|
1.0
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested chickpea plants plots assessed as nematode population per cm3 soil measured 110 days post dose following field application at 1 kg of active ingredient/hectare (Rvb = 1.8 to 3.15 nematode population/cm3 soil)
|
Rotylenchulus reniformis
|
2.5
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested chickpea plants plots assessed as nematode population per cm3 soil measured 110 days post dose following field application at 2 kg of active ingredient/hectare (Rvb = 2.45 to 4.3 J2 population/cm3 soil)
|
Meloidogyne incognita
|
1.0
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested chickpea plants plots assessed as nematode population per cm3 soil measured 110 days post dose following field application at 1 kg of active ingredient/hectare (Rvb = 2.45 to 4.3 J2 population/cm3 soil)
|
Meloidogyne incognita
|
3.4
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested chickpea plants plots assessed as nematode population per cm3 soil measured 55 days post dose following field application at 2 kg of active ingredient/hectare (Rvb = 1.8 to 3.15 nematode population/cm3 soil)
|
Rotylenchulus reniformis
|
2.0
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against Rotylenchulus reniformis (reniform nematode) infested chickpea plants plots assessed as nematode population per cm3 soil measured 55 days post dose following field application at 1 kg of active ingredient/hectare (Rvb = 1.8 to 3.15 nematode population/cm3 soil)
|
Rotylenchulus reniformis
|
2.65
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested chickpea plants plots assessed as nematode population per cm3 soil measured 55 days post dose following field application at 2 kg of active ingredient/hectare (Rvb = 2.45 to 4.3 J2 population/cm3 soil)
|
Meloidogyne incognita
|
1.85
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Nematicidal activity against root-knot nematode Meloidogyne incognita J2 (root-knot nematode) infested chickpea plants plots assessed as nematode population per cm3 soil measured 55 days post dose following field application at 1 kg of active ingredient/hectare (Rvb = 2.45 to 4.3 J2 population/cm3 soil)
|
Meloidogyne incognita
|
3.1
/cm3
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Cmax in Solanum lycopersicum (tomato) shoots measured 45 days post dose following field application at 1 and 2 kg of active ingredient/hectare
|
Solanum lycopersicum
|
31.6
ug/g
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Cmax in Cicer arietinum (chickpea) shoots measured 45 days post dose following field application at 1 and 2 kg of active ingredient/hectare
|
Cicer arietinum
|
24.8
ug/g
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Drug translocation in Solanum lycopersicum (tomato) roots assessed as mean drug level measured post dose following field application at 1 and 2 kg of active ingredient/hectare
|
Solanum lycopersicum
|
9.52
ug/g
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Drug absorption in Solanum lycopersicum (tomato) roots assessed as mean drug level measured post dose following field application at 1 and 2 kg of active ingredient/hectare
|
Solanum lycopersicum
|
0.36
ug/g
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Drug level in Cicer arietinum (chickpea) roots measured 15 days post dose following field application at 1 and 2 kg of active ingredient/hectare
|
Cicer arietinum
|
0.53
ug/g
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Toxicity in Rattus norvegicus (rat)
|
Rattus norvegicus
|
209.0
mg.kg-1
|
|
Journal : J Agric Food Chem
Year : 2010
Volume : 58
Issue : 3
First Page : 1815
Last Page : 1822
Risk quotient, recommended field rate (g/ha) to LC50 for Trichogramma nubilale (mg/L)
|
Trichogramma nubilale
|
189.5
|
|
Journal : Crop Protection
Title : Susceptibility of adult Trichogramma nubilale (Hymenoptera: Trichogrammatidae) to selected insecticides with different modes of action
Year : 2012
Volume : 34
First Page : 76
Last Page : 72
Authors : Wang Y, Yu R, Zhao X, Chen L, Wu C, Cang T, Wang Q.
Abstract : The parasitic wasp Trichogramma nubilale (Hymenoptera: Trichogrammatidae) is one of the most suitable parasitoids for controlling Asian corn borer, Ostrinia furnacalis (Lepidoptera: Crambidae). Although extensive toxicological tests have been carried out to elucidate the toxicities of insecticides to trichogrammatids, the acute toxicity risks of commonly used insecticides to T. nubilale are not well known. Among the 7 classes of tested chemicals, organophosphates and carbamates had the highest intrinsic toxicity to the parasitoid with LC50 values ranging from 0.081 (0.062–0.12) to 2.10 (1.23–3.47) and from 0.12 (0.11–0.14) to 0.95 (0.87–1.05) mg a.i. per liter, respectively. The phenylpyrazoles (with the exception of butene-fipronil), avermectins, neonicotinoids and pyrethroids induced intermediate toxicity responses with LC50 values ranging from 0.29 to 4.67, 2.36 to 11.27, 1.86 to 311.9, and 10.98–150.3 mg a.i. per liter, respectively. In contrast, insect growth regulators (IGRs) exhibited the least toxicity to the parasitoid with LC50 values ranging from 3452 (3114–3877) to 10,168 (8848–12,027) mg a.i. per liter. A risk quotient analysis indicated that neonicotinoids, avermectins, pyrethroids, IGRs and phenylpyrazoles (with the exception of butene-fipronil) were safe, but organophosphates and carbamates were slightly to moderately toxic or highly toxic to T. nubilale. This study provided informative data for implementing both biological and chemical control strategies in integrated pest management (IPM) of corn lepidopterans.
Contact toxicity against Trichogramma nubilale assessed as mortality after 24 hr by modified slight dry film method
|
Trichogramma nubilale
|
7.4
mgAi/L
|
|
Contact toxicity against Trichogramma nubilale assessed as mortality after 24 hr by modified slight dry film method
|
Trichogramma nubilale
|
0.95
mgAi/L
|
|
Journal : Crop Protection
Title : Susceptibility of adult Trichogramma nubilale (Hymenoptera: Trichogrammatidae) to selected insecticides with different modes of action
Year : 2012
Volume : 34
First Page : 76
Last Page : 72
Authors : Wang Y, Yu R, Zhao X, Chen L, Wu C, Cang T, Wang Q.
Abstract : The parasitic wasp Trichogramma nubilale (Hymenoptera: Trichogrammatidae) is one of the most suitable parasitoids for controlling Asian corn borer, Ostrinia furnacalis (Lepidoptera: Crambidae). Although extensive toxicological tests have been carried out to elucidate the toxicities of insecticides to trichogrammatids, the acute toxicity risks of commonly used insecticides to T. nubilale are not well known. Among the 7 classes of tested chemicals, organophosphates and carbamates had the highest intrinsic toxicity to the parasitoid with LC50 values ranging from 0.081 (0.062–0.12) to 2.10 (1.23–3.47) and from 0.12 (0.11–0.14) to 0.95 (0.87–1.05) mg a.i. per liter, respectively. The phenylpyrazoles (with the exception of butene-fipronil), avermectins, neonicotinoids and pyrethroids induced intermediate toxicity responses with LC50 values ranging from 0.29 to 4.67, 2.36 to 11.27, 1.86 to 311.9, and 10.98–150.3 mg a.i. per liter, respectively. In contrast, insect growth regulators (IGRs) exhibited the least toxicity to the parasitoid with LC50 values ranging from 3452 (3114–3877) to 10,168 (8848–12,027) mg a.i. per liter. A risk quotient analysis indicated that neonicotinoids, avermectins, pyrethroids, IGRs and phenylpyrazoles (with the exception of butene-fipronil) were safe, but organophosphates and carbamates were slightly to moderately toxic or highly toxic to T. nubilale. This study provided informative data for implementing both biological and chemical control strategies in integrated pest management (IPM) of corn lepidopterans.
Ratio of LC50 for third-instar Apolygus lucorum reared in asparagus bean pod at 15 degC to LC50 for third-instar Apolygus lucorum reared in asparagus bean pod at 25 degC
|
Apolygus lucorum
|
1.37
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Ratio of LC50 for third-instar Apolygus lucorum reared in asparagus bean pod at 15 degC to LC50 for third-instar Apolygus lucorum reared in asparagus bean pod at 35 degC
|
Apolygus lucorum
|
1.75
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Ratio of LC50 for third-instar Apolygus lucorum reared in asparagus bean pod at 15 degC to LC50 for third-instar Apolygus lucorum reared in asparagus bean pod at 30 degC
|
Apolygus lucorum
|
1.12
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Ratio of LC50 for third-instar Apolygus lucorum reared in asparagus bean pod at 15 degC to LC50 for third-instar Apolygus lucorum reared in asparagus bean pod at 20 degC
|
Apolygus lucorum
|
2.36
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Insecticidal activity against third-instar Apolygus lucorum reared in asparagus bean pod assessed as mortality administered by dipping pods in compound solution measured after 48 hr at 35 degC
|
Apolygus lucorum
|
156.75
ug.mL-1
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Insecticidal activity against third-instar Apolygus lucorum reared in asparagus bean pod assessed as mortality administered by dipping pods in compound solution measured after 48 hr at 30 degC
|
Apolygus lucorum
|
246.4
ug.mL-1
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Insecticidal activity against third-instar Apolygus lucorum reared in asparagus bean pod assessed as mortality administered by dipping pods in compound solution measured after 48 hr at 25 degC
|
Apolygus lucorum
|
199.4
ug.mL-1
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Insecticidal activity against third-instar Apolygus lucorum reared in asparagus bean pod assessed as mortality administered by dipping pods in compound solution measured after 48 hr at 20 degC
|
Apolygus lucorum
|
116.07
ug.mL-1
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Insecticidal activity against third-instar Apolygus lucorum reared in asparagus bean pod assessed as mortality administered by dipping pods in compound solution measured after 48 hr at 15 degC
|
Apolygus lucorum
|
274.15
ug.mL-1
|
|
Journal : J Pesticide Sci
Year : 2012
Volume : 37
Issue : 2
First Page : 135
Last Page : 139
Ratio of EC50 for Daphnia magna to EC50 for first instar larvae of Cheumatopsyche brevilineata
|
None
|
-0.16
|
|
Journal : J Pesticide Sci
Title : A useful new insecticide bioassay using first-instar larvae of a net-spinning caddisfly, Cheumatopsyche brevilineata (Trichoptera: Hydropsychidae)
Year : 2009
Volume : 34
Issue : 1
First Page : 13
Last Page : 20
Authors : Yokoyama A, Ohtsu K, Iwafune T, Nagai T, Ishihara S, Kobara Y, Horio T, Endo S
Insecticidal activity against first-instar larvae of Cheumatopsyche brevilineata after 48 hr
|
Cheumatopsyche
|
0.00149
ug.mL-1
|
|
Journal : J Pesticide Sci
Title : A useful new insecticide bioassay using first-instar larvae of a net-spinning caddisfly, Cheumatopsyche brevilineata (Trichoptera: Hydropsychidae)
Year : 2009
Volume : 34
Issue : 1
First Page : 13
Last Page : 20
Authors : Yokoyama A, Ohtsu K, Iwafune T, Nagai T, Ishihara S, Kobara Y, Horio T, Endo S
Octanol-water partition coefficient, log KOW of the compound
|
None
|
5.4
|
|
Journal : J Pesticide Sci
Title : A useful new insecticide bioassay using first-instar larvae of a net-spinning caddisfly, Cheumatopsyche brevilineata (Trichoptera: Hydropsychidae)
Year : 2009
Volume : 34
Issue : 1
First Page : 13
Last Page : 20
Authors : Yokoyama A, Ohtsu K, Iwafune T, Nagai T, Ishihara S, Kobara Y, Horio T, Endo S
Insecticidal activity against Daphnia pulex after 48 hr
|
Daphnia pulex
|
0.00103
ug.mL-1
|
|
Journal : J Pesticide Sci
Title : A useful new insecticide bioassay using first-instar larvae of a net-spinning caddisfly, Cheumatopsyche brevilineata (Trichoptera: Hydropsychidae)
Year : 2009
Volume : 34
Issue : 1
First Page : 13
Last Page : 20
Authors : Yokoyama A, Ohtsu K, Iwafune T, Nagai T, Ishihara S, Kobara Y, Horio T, Endo S
Resistance ratio of LC50 for Bemisia tabaci (sweet potato whitefly) infested poinsettia leaves to LC50 for Bemisia tabaci (sweet potato whitefly) infested cabbage leaves
|
Bemisia tabaci
|
5.36
|
|
Journal : Pest Manag Sci
Title : Induction effects of host plants on insecticide susceptibility and detoxification enzymes of Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2011
Volume : 67
Issue : 1
First Page : 87
Last Page : 93
Authors : Xie W, Wang S, Wu Q, Feng Y, Pan H, Jiao X, Zhou L, Yang X, Fu W, Teng H, Xu B, Zhang Y.
Abstract : BACKGROUND: The polyphagous B-biotype Bemisia tabaci (Gennadius) has developed a high resistance to commonly used insecticides in China. To illustrate the induced changes by host plant, bioassay and biochemical research on five different host populations were investigated. RESULTS: Except for bifenthrin, all tested insecticides showed lower toxicity to the B. tabaci poinsettia population compared with other host populations. Moreover, four insecticides, the exceptions being abamectin and fipronil, showed highest toxicity towards the tomato population. The LC(50) values of the poinsettia population, particularly towards acetamiprid, were 14.8-, 10.3- and 7.29-fold higher than those of tomato, cucumber and cabbage respectively. The CarE activities of B. tabaci cabbage and cucumber populations were all significantly higher than those of poinsettia, cotton and tomato populations. The ratio of the cabbage population was 1.97-, 1.79- and 1.30-fold higher than that of poinsettia, cotton and tomato respectively. The frequency profiles for this activity also have obvious differences. The GST and P450 activities of the cucumber population were the lowest in the five host populations. CONCLUSION: Long-term induction of host plants for B-biotype B. tabaci could influence their susceptibilities to several insecticides. Rational selection and usage of insecticides for particular hosts will be helpful for resistance management and control of this species.
Insecticidal activity against Bemisia tabaci (sweet potato whitefly) infested cabbage leaves assessed as mortality after 48 hr by leaf dip method
|
Bemisia tabaci
|
696.0
ug.mL-1
|
|
Journal : Pest Manag Sci
Title : Induction effects of host plants on insecticide susceptibility and detoxification enzymes of Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2011
Volume : 67
Issue : 1
First Page : 87
Last Page : 93
Authors : Xie W, Wang S, Wu Q, Feng Y, Pan H, Jiao X, Zhou L, Yang X, Fu W, Teng H, Xu B, Zhang Y.
Abstract : BACKGROUND: The polyphagous B-biotype Bemisia tabaci (Gennadius) has developed a high resistance to commonly used insecticides in China. To illustrate the induced changes by host plant, bioassay and biochemical research on five different host populations were investigated. RESULTS: Except for bifenthrin, all tested insecticides showed lower toxicity to the B. tabaci poinsettia population compared with other host populations. Moreover, four insecticides, the exceptions being abamectin and fipronil, showed highest toxicity towards the tomato population. The LC(50) values of the poinsettia population, particularly towards acetamiprid, were 14.8-, 10.3- and 7.29-fold higher than those of tomato, cucumber and cabbage respectively. The CarE activities of B. tabaci cabbage and cucumber populations were all significantly higher than those of poinsettia, cotton and tomato populations. The ratio of the cabbage population was 1.97-, 1.79- and 1.30-fold higher than that of poinsettia, cotton and tomato respectively. The frequency profiles for this activity also have obvious differences. The GST and P450 activities of the cucumber population were the lowest in the five host populations. CONCLUSION: Long-term induction of host plants for B-biotype B. tabaci could influence their susceptibilities to several insecticides. Rational selection and usage of insecticides for particular hosts will be helpful for resistance management and control of this species.
Resistance ratio of LC50 for Bemisia tabaci (sweet potato whitefly) infested poinsettia leaves to LC50 for Bemisia tabaci (sweet potato whitefly) infested tomato leaves
|
Bemisia tabaci
|
6.36
|
|
Journal : Pest Manag Sci
Title : Induction effects of host plants on insecticide susceptibility and detoxification enzymes of Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2011
Volume : 67
Issue : 1
First Page : 87
Last Page : 93
Authors : Xie W, Wang S, Wu Q, Feng Y, Pan H, Jiao X, Zhou L, Yang X, Fu W, Teng H, Xu B, Zhang Y.
Abstract : BACKGROUND: The polyphagous B-biotype Bemisia tabaci (Gennadius) has developed a high resistance to commonly used insecticides in China. To illustrate the induced changes by host plant, bioassay and biochemical research on five different host populations were investigated. RESULTS: Except for bifenthrin, all tested insecticides showed lower toxicity to the B. tabaci poinsettia population compared with other host populations. Moreover, four insecticides, the exceptions being abamectin and fipronil, showed highest toxicity towards the tomato population. The LC(50) values of the poinsettia population, particularly towards acetamiprid, were 14.8-, 10.3- and 7.29-fold higher than those of tomato, cucumber and cabbage respectively. The CarE activities of B. tabaci cabbage and cucumber populations were all significantly higher than those of poinsettia, cotton and tomato populations. The ratio of the cabbage population was 1.97-, 1.79- and 1.30-fold higher than that of poinsettia, cotton and tomato respectively. The frequency profiles for this activity also have obvious differences. The GST and P450 activities of the cucumber population were the lowest in the five host populations. CONCLUSION: Long-term induction of host plants for B-biotype B. tabaci could influence their susceptibilities to several insecticides. Rational selection and usage of insecticides for particular hosts will be helpful for resistance management and control of this species.
Insecticidal activity against Bemisia tabaci (sweet potato whitefly) infested tomato leaves assessed as mortality after 48 hr by leaf dip method
|
Bemisia tabaci
|
586.0
ug.mL-1
|
|
Journal : Pest Manag Sci
Title : Induction effects of host plants on insecticide susceptibility and detoxification enzymes of Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2011
Volume : 67
Issue : 1
First Page : 87
Last Page : 93
Authors : Xie W, Wang S, Wu Q, Feng Y, Pan H, Jiao X, Zhou L, Yang X, Fu W, Teng H, Xu B, Zhang Y.
Abstract : BACKGROUND: The polyphagous B-biotype Bemisia tabaci (Gennadius) has developed a high resistance to commonly used insecticides in China. To illustrate the induced changes by host plant, bioassay and biochemical research on five different host populations were investigated. RESULTS: Except for bifenthrin, all tested insecticides showed lower toxicity to the B. tabaci poinsettia population compared with other host populations. Moreover, four insecticides, the exceptions being abamectin and fipronil, showed highest toxicity towards the tomato population. The LC(50) values of the poinsettia population, particularly towards acetamiprid, were 14.8-, 10.3- and 7.29-fold higher than those of tomato, cucumber and cabbage respectively. The CarE activities of B. tabaci cabbage and cucumber populations were all significantly higher than those of poinsettia, cotton and tomato populations. The ratio of the cabbage population was 1.97-, 1.79- and 1.30-fold higher than that of poinsettia, cotton and tomato respectively. The frequency profiles for this activity also have obvious differences. The GST and P450 activities of the cucumber population were the lowest in the five host populations. CONCLUSION: Long-term induction of host plants for B-biotype B. tabaci could influence their susceptibilities to several insecticides. Rational selection and usage of insecticides for particular hosts will be helpful for resistance management and control of this species.
Insecticidal activity against Bemisia tabaci (sweet potato whitefly) infested cucumber leaves assessed as mortality after 48 hr by leaf dip method
|
Bemisia tabaci
|
3086.0
ug.mL-1
|
|
Journal : Pest Manag Sci
Title : Induction effects of host plants on insecticide susceptibility and detoxification enzymes of Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2011
Volume : 67
Issue : 1
First Page : 87
Last Page : 93
Authors : Xie W, Wang S, Wu Q, Feng Y, Pan H, Jiao X, Zhou L, Yang X, Fu W, Teng H, Xu B, Zhang Y.
Abstract : BACKGROUND: The polyphagous B-biotype Bemisia tabaci (Gennadius) has developed a high resistance to commonly used insecticides in China. To illustrate the induced changes by host plant, bioassay and biochemical research on five different host populations were investigated. RESULTS: Except for bifenthrin, all tested insecticides showed lower toxicity to the B. tabaci poinsettia population compared with other host populations. Moreover, four insecticides, the exceptions being abamectin and fipronil, showed highest toxicity towards the tomato population. The LC(50) values of the poinsettia population, particularly towards acetamiprid, were 14.8-, 10.3- and 7.29-fold higher than those of tomato, cucumber and cabbage respectively. The CarE activities of B. tabaci cabbage and cucumber populations were all significantly higher than those of poinsettia, cotton and tomato populations. The ratio of the cabbage population was 1.97-, 1.79- and 1.30-fold higher than that of poinsettia, cotton and tomato respectively. The frequency profiles for this activity also have obvious differences. The GST and P450 activities of the cucumber population were the lowest in the five host populations. CONCLUSION: Long-term induction of host plants for B-biotype B. tabaci could influence their susceptibilities to several insecticides. Rational selection and usage of insecticides for particular hosts will be helpful for resistance management and control of this species.
Insecticidal activity against Bemisia tabaci (sweet potato whitefly) infested cotton leaves assessed as mortality after 48 hr by leaf dip method
|
Bemisia tabaci
|
2877.0
ug.mL-1
|
|
Journal : Pest Manag Sci
Title : Induction effects of host plants on insecticide susceptibility and detoxification enzymes of Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2011
Volume : 67
Issue : 1
First Page : 87
Last Page : 93
Authors : Xie W, Wang S, Wu Q, Feng Y, Pan H, Jiao X, Zhou L, Yang X, Fu W, Teng H, Xu B, Zhang Y.
Abstract : BACKGROUND: The polyphagous B-biotype Bemisia tabaci (Gennadius) has developed a high resistance to commonly used insecticides in China. To illustrate the induced changes by host plant, bioassay and biochemical research on five different host populations were investigated. RESULTS: Except for bifenthrin, all tested insecticides showed lower toxicity to the B. tabaci poinsettia population compared with other host populations. Moreover, four insecticides, the exceptions being abamectin and fipronil, showed highest toxicity towards the tomato population. The LC(50) values of the poinsettia population, particularly towards acetamiprid, were 14.8-, 10.3- and 7.29-fold higher than those of tomato, cucumber and cabbage respectively. The CarE activities of B. tabaci cabbage and cucumber populations were all significantly higher than those of poinsettia, cotton and tomato populations. The ratio of the cabbage population was 1.97-, 1.79- and 1.30-fold higher than that of poinsettia, cotton and tomato respectively. The frequency profiles for this activity also have obvious differences. The GST and P450 activities of the cucumber population were the lowest in the five host populations. CONCLUSION: Long-term induction of host plants for B-biotype B. tabaci could influence their susceptibilities to several insecticides. Rational selection and usage of insecticides for particular hosts will be helpful for resistance management and control of this species.
Insecticidal activity against Bemisia tabaci (sweet potato whitefly) infested poinsettia leaves assessed as mortality after 48 hr by leaf dip method
|
Bemisia tabaci
|
3727.0
ug.mL-1
|
|
Journal : Pest Manag Sci
Title : Induction effects of host plants on insecticide susceptibility and detoxification enzymes of Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2011
Volume : 67
Issue : 1
First Page : 87
Last Page : 93
Authors : Xie W, Wang S, Wu Q, Feng Y, Pan H, Jiao X, Zhou L, Yang X, Fu W, Teng H, Xu B, Zhang Y.
Abstract : BACKGROUND: The polyphagous B-biotype Bemisia tabaci (Gennadius) has developed a high resistance to commonly used insecticides in China. To illustrate the induced changes by host plant, bioassay and biochemical research on five different host populations were investigated. RESULTS: Except for bifenthrin, all tested insecticides showed lower toxicity to the B. tabaci poinsettia population compared with other host populations. Moreover, four insecticides, the exceptions being abamectin and fipronil, showed highest toxicity towards the tomato population. The LC(50) values of the poinsettia population, particularly towards acetamiprid, were 14.8-, 10.3- and 7.29-fold higher than those of tomato, cucumber and cabbage respectively. The CarE activities of B. tabaci cabbage and cucumber populations were all significantly higher than those of poinsettia, cotton and tomato populations. The ratio of the cabbage population was 1.97-, 1.79- and 1.30-fold higher than that of poinsettia, cotton and tomato respectively. The frequency profiles for this activity also have obvious differences. The GST and P450 activities of the cucumber population were the lowest in the five host populations. CONCLUSION: Long-term induction of host plants for B-biotype B. tabaci could influence their susceptibilities to several insecticides. Rational selection and usage of insecticides for particular hosts will be helpful for resistance management and control of this species.
Ratio of LD50 for Laodelphax striatella Kumamoto (small brown planthopper) to LD50 for susceptible Laodelphax striatella
|
Laodelphax striatella
|
19.0
|
|
Journal : J Pesticide Sci
Title : Insecticide Resistance and Insensitive Acetylcholinesterase in Small Brown Planthopper, Laodelphax striatellus
Year : 2000
Volume : 25
Issue : 4
First Page : 395
Last Page : 397
Authors : ENDO S, TSURUMACHI M
Insecticidal activity against Laodelphax striatella Ibaraki (small brown planthopper) assessed as mortality compound treated topically on dorsal side
|
Laodelphax striatella
|
None
|
|
Journal : J Pesticide Sci
Title : Insecticide Resistance and Insensitive Acetylcholinesterase in Small Brown Planthopper, Laodelphax striatellus
Year : 2000
Volume : 25
Issue : 4
First Page : 395
Last Page : 397
Authors : ENDO S, TSURUMACHI M
Insecticidal activity against Laodelphax striatella Kumamoto (small brown planthopper) assessed as mortality compound treated topically on dorsal side
|
Laodelphax striatella
|
42.0
mg.kg-1
|
|
Journal : J Pesticide Sci
Title : Insecticide Resistance and Insensitive Acetylcholinesterase in Small Brown Planthopper, Laodelphax striatellus
Year : 2000
Volume : 25
Issue : 4
First Page : 395
Last Page : 397
Authors : ENDO S, TSURUMACHI M
Insecticidal activity against susceptible Laodelphax striatella (small brown planthopper) assessed as mortality compound treated topically on dorsal side
|
Laodelphax striatella
|
2.2
mg.kg-1
|
|
Journal : J Pesticide Sci
Title : Insecticide Resistance and Insensitive Acetylcholinesterase in Small Brown Planthopper, Laodelphax striatellus
Year : 2000
Volume : 25
Issue : 4
First Page : 395
Last Page : 397
Authors : ENDO S, TSURUMACHI M
Resistant factor, ratio of LC50 for Aphis gossypii clone Ivo (cotton aphid) to Aphis gossypii clone NM1
|
Aphis gossypii
|
0.5
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Resistant factor, ratio of LC50 for Aphis gossypii clone Burk (cotton aphid) to Aphis gossypii clone NM1
|
Aphis gossypii
|
0.7
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Resistant factor, ratio of LC50 for Aphis gossypii clone Auber (cotton aphid) to Aphis gossypii clone NM1
|
Aphis gossypii
|
0.9
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Resistant factor, ratio of LC50 for Aphis gossypii clone PsP4 (cotton aphid) to Aphis gossypii clone NM1
|
Aphis gossypii
|
0.9
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Resistant factor, ratio of LC50 for Aphis gossypii clone C4 (cotton aphid) to Aphis gossypii clone NM1
|
Aphis gossypii
|
1.2
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Resistant factor, ratio of LC50 for Aphis gossypii clone C9 (cotton aphid) to Aphis gossypii clone NM1
|
Aphis gossypii
|
1.2
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Insecticidal activity against Aphis gossypii clone Ivo (cotton aphid) in cotton plant leaf assessed as mortality after 24 hr by leaf disk assay
|
Aphis gossypii
|
2.2
ugAi/ml
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Insecticidal activity against Aphis gossypii clone Burk (cotton aphid) in cotton plant leaf assessed as mortality after 24 hr by leaf disk assay
|
Aphis gossypii
|
3.1
ugAi/ml
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Insecticidal activity against Aphis gossypii clone Auber (cotton aphid) in egg plant leaf assessed as mortality after 24 hr by leaf disk assay
|
Aphis gossypii
|
4.0
ugAi/ml
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Insecticidal activity against Aphis gossypii clone PsP4 (cotton aphid) in pepper plant leaf assessed as mortality after 24 hr by leaf disk assay
|
Aphis gossypii
|
4.2
ugAi/ml
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Insecticidal activity against Aphis gossypii clone C4 (cotton aphid) in zucchini or squash leaf assessed as mortality after 24 hr by leaf disk assay
|
Aphis gossypii
|
5.7
ugAi/ml
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Insecticidal activity against Aphis gossypii clone C9 (cotton aphid) in zucchini or squash leaf assessed as mortality after 24 hr by leaf disk assay
|
Aphis gossypii
|
5.6
ugAi/ml
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Insecticidal activity against Aphis gossypii clone NM1 (cotton aphid) in zucchini or squash leaf assessed as mortality after 24 hr by leaf disk assay
|
Aphis gossypii
|
4.6
ugAi/ml
|
|
Journal : Pest Manag Sci
Title : Insecticide resistance traits differ among and within host races in Aphis gossypii.
Year : 2010
Volume : 66
Issue : 3
First Page : 301
Last Page : 307
Authors : Carletto J, Martin T, Vanlerberghe-Masutti F, Brévault T.
Abstract : BACKGROUND: The polyphagous cotton-melon aphid Aphis gossypii Glover is structured into geographically widespread host races comprising a few clones specialised on Cucurbitaceae, cotton, eggplant or pepper. To assess insecticide resistance among and within host races, leaf disc bioassays were conducted on aphid clones collected from Cucurbitaceae (genotypes C4 and C9), cotton (genotypes Burk and Ivo), eggplant (genotype Auber) and pepper (genotype PsP4). Molecular diagnostic (PCR-RFLP) and enzyme assays were also performed to detect the basic mechanisms underlying insecticide resistance. RESULTS: All six clones were susceptible to acetamiprid (neonicotinoid) or carbosulfan (carbamate). Conversely, all clones were resistant to dimethoate (organophosphate) (RF = 4.1-38.1) and carried mutation S431F in the acetylcholinesterase gene. Auber, PsP4 and Burk also carried mutation A302S in this gene, which possibly conferred moderate resistance (RF = 3.7-6.8) to profenofos and monocrotophos (organophosphates). Auber and Burk were highly resistant (RF = 41.2 and 473 respectively) to cypermethrin (pyrethroid). This resistance was likely associated with point mutation super-kdr (M918L) in the voltage-gated sodium channel gene (para gene) or metabolic detoxification mediated by esterase and oxidase enzymes. CONCLUSION: Multiple resistance to a broad range of insecticides and multiple mechanisms of resistance in some clones could explain to some extent the low genetic diversity observed within A. gossypii host races.
Cross resistant, ratio of LC50 for B-biotype thiamethoxam-resistant Bemisia tabaci (sweet potato whitefly) to LC50 for B-biotype thiamethoxam-sensitive Bemisia tabaci (sweet potato whitefly)
|
Bemisia tabaci
|
4.43
|
|
Journal : Pest Manag Sci
Title : Cross-resistance study and biochemical mechanisms of thiamethoxam resistance in B-biotype Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2010
Volume : 66
Issue : 3
First Page : 313
Last Page : 318
Authors : Feng Y, Wu Q, Wang S, Chang X, Xie W, Xu B, Zhang Y.
Abstract : BACKGROUND: B-biotype Bemisia tabaci (Gennadius) has invaded China over the past two decades. To understand the risks and to determine possible mechanisms of resistance to thiamethoxam in B. tabaci, a resistant strain was selected in the laboratory. Cross-resistance and the biochemical mechanisms of thiamethoxam resistance were investigated in the present study. RESULTS: A 66.3-fold thiamethoxam-resistant B. tabaci strain (TH-R) was established after selection for 36 generations. Compared with the susceptible strain (TH-S), the selected TH-R strain showed obvious cross-resistance to imidacloprid (47.3-fold), acetamiprid (35.8-fold), nitenpyram (9.99-fold), abamectin (5.33-fold) and carbosulfan (4.43-fold). No cross-resistance to fipronil, chlorpyrifos or deltamethrin was seen. Piperonyl butoxide (PBO) and triphenyl phosphate (TPP) exhibited significant synergism on thiamethoxam effects in the TH-R strain (3.14- and 2.37-fold respectively). However, diethyl maleate (DEM) did not act synergistically with thiamethoxam. Biochemical assays showed that cytochrome P450 monooxygenase activities increased 1.21- and 1.68-fold respectively, and carboxylesterase activity increased 2.96-fold in the TH-R strain. However, no difference was observed for glutathione S-transferase between the two strains. CONCLUSION: B-biotype B. tabaci develops resistance to thiamethoxam. Cytochrome P450 monooxygenase and carboxylesterase appear to be responsible for the resistance. Reasonable resistance management that avoids the use of cross-resistance insecticides may delay the development of resistance to thiamethoxam in this species.
Insecticidal activity against B-biotype thiamethoxam-resistant Bemisia tabaci (sweet potato whitefly) in cabbage leaf assessed as mortality after 48 hr by leaf disk assay
|
Bemisia tabaci
|
1957.0
ug.mL-1
|
|
Journal : Pest Manag Sci
Title : Cross-resistance study and biochemical mechanisms of thiamethoxam resistance in B-biotype Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2010
Volume : 66
Issue : 3
First Page : 313
Last Page : 318
Authors : Feng Y, Wu Q, Wang S, Chang X, Xie W, Xu B, Zhang Y.
Abstract : BACKGROUND: B-biotype Bemisia tabaci (Gennadius) has invaded China over the past two decades. To understand the risks and to determine possible mechanisms of resistance to thiamethoxam in B. tabaci, a resistant strain was selected in the laboratory. Cross-resistance and the biochemical mechanisms of thiamethoxam resistance were investigated in the present study. RESULTS: A 66.3-fold thiamethoxam-resistant B. tabaci strain (TH-R) was established after selection for 36 generations. Compared with the susceptible strain (TH-S), the selected TH-R strain showed obvious cross-resistance to imidacloprid (47.3-fold), acetamiprid (35.8-fold), nitenpyram (9.99-fold), abamectin (5.33-fold) and carbosulfan (4.43-fold). No cross-resistance to fipronil, chlorpyrifos or deltamethrin was seen. Piperonyl butoxide (PBO) and triphenyl phosphate (TPP) exhibited significant synergism on thiamethoxam effects in the TH-R strain (3.14- and 2.37-fold respectively). However, diethyl maleate (DEM) did not act synergistically with thiamethoxam. Biochemical assays showed that cytochrome P450 monooxygenase activities increased 1.21- and 1.68-fold respectively, and carboxylesterase activity increased 2.96-fold in the TH-R strain. However, no difference was observed for glutathione S-transferase between the two strains. CONCLUSION: B-biotype B. tabaci develops resistance to thiamethoxam. Cytochrome P450 monooxygenase and carboxylesterase appear to be responsible for the resistance. Reasonable resistance management that avoids the use of cross-resistance insecticides may delay the development of resistance to thiamethoxam in this species.
Insecticidal activity against B-biotype thiamethoxam-sensitive Bemisia tabaci (sweet potato whitefly) in cabbage leaf assessed as mortality after 48 hr by leaf disk assay
|
Bemisia tabaci
|
441.0
ug.mL-1
|
|
Journal : Pest Manag Sci
Title : Cross-resistance study and biochemical mechanisms of thiamethoxam resistance in B-biotype Bemisia tabaci (Hemiptera: Aleyrodidae).
Year : 2010
Volume : 66
Issue : 3
First Page : 313
Last Page : 318
Authors : Feng Y, Wu Q, Wang S, Chang X, Xie W, Xu B, Zhang Y.
Abstract : BACKGROUND: B-biotype Bemisia tabaci (Gennadius) has invaded China over the past two decades. To understand the risks and to determine possible mechanisms of resistance to thiamethoxam in B. tabaci, a resistant strain was selected in the laboratory. Cross-resistance and the biochemical mechanisms of thiamethoxam resistance were investigated in the present study. RESULTS: A 66.3-fold thiamethoxam-resistant B. tabaci strain (TH-R) was established after selection for 36 generations. Compared with the susceptible strain (TH-S), the selected TH-R strain showed obvious cross-resistance to imidacloprid (47.3-fold), acetamiprid (35.8-fold), nitenpyram (9.99-fold), abamectin (5.33-fold) and carbosulfan (4.43-fold). No cross-resistance to fipronil, chlorpyrifos or deltamethrin was seen. Piperonyl butoxide (PBO) and triphenyl phosphate (TPP) exhibited significant synergism on thiamethoxam effects in the TH-R strain (3.14- and 2.37-fold respectively). However, diethyl maleate (DEM) did not act synergistically with thiamethoxam. Biochemical assays showed that cytochrome P450 monooxygenase activities increased 1.21- and 1.68-fold respectively, and carboxylesterase activity increased 2.96-fold in the TH-R strain. However, no difference was observed for glutathione S-transferase between the two strains. CONCLUSION: B-biotype B. tabaci develops resistance to thiamethoxam. Cytochrome P450 monooxygenase and carboxylesterase appear to be responsible for the resistance. Reasonable resistance management that avoids the use of cross-resistance insecticides may delay the development of resistance to thiamethoxam in this species.