geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Diagnostic esterases and insecticide resistance in the tobacco aphid, Myzus nicotianae Blackman (Homoptera: Aphididae)


, : Diagnostic esterases and insecticide resistance in the tobacco aphid, Myzus nicotianae Blackman (Homoptera: Aphididae). Pesticide Biochemistry and Physiology 43(2): 123-133

Insecticide resistance in the tobacco aphid, Myzus nicotianae Blackman, from different localities in the southeastern United States has been found to exist mainly in aphids with red body coloration. Frequency distribution of esterase activity in individual tobacco aphids collected from a tobacco field and a greenhouse indicated that organophosphate resistance was always linked to high carboxylesterase activity toward 1-naphthyl acetate. Two approaches were taken to speed up the detection methodology of the frequency of resistant phenotypes. First, an abbreviated bioassay test, using malathion as a reporter molecule, was developed to rapidly distinguish between OP-resistant and susceptible phenotypes of the tobacco aphid. A time threshold of 50 min following aphid exposure to 50 ppm malathion in a water suspension accurately discriminated between susceptible and resistant phenotypes. Second, assays of aphid carboxylesterases, using the acetates and propionates of 1-naphthol, 2-naphthol, and 4-nitrophenol, were performed to optimize and better understand the esterase discriminating activity between resistant and susceptible phenotypes. Only activity toward 1-naphtholic esters unambiguously discriminated between susceptible and resistant aphids. In general, resistance to malathion appeared to be esterase-mediated and some electrofocusing-detectable esterase isozymes were associated with resistance.

US$19.90

DOI: 10.1016/0048-3575(92)90026-v


Other references

Voluter, G.; Werner, A., 1956: Nontraumatic anterior atloido-axoidean luxation in the adult. Journal de Radiologie, D'electrologie & Archives D'electricite Medicale 37(3-4): 176-178

Kimiya S.; Seki T.; Shimizu A.; Takuma Y., 1989: Neuroendocrinologic background of combination therapy of high dose pyridoxal phosphate and low dose acth z in treatment of infantile spasms and lennox gastaut syndromes. Epilepsia 30(5): 655

Liu Guangrun, 1986: Discussion about engineering geologic division of rockmasses for engineering geologic mapping. Congres International Association International de Geologie de l'Ingenieur = International Congress International Association of Engineering Geology: Pages 131-137. 1986.

Nicol C.J.; Pope S.J., 1992: Social learning of novel pecking responses in hens. Journal of Animal Science 70(SUPPL 1): 156

Cai, X.-; Leclerc, M., Y., 2007: Forward-in-time and Backward-in-time Dispersion in the Convective Boundary Layer: the Concentration Footprint. The turbulence field obtained using a large-eddy simulation model is used to simulate particle dispersion in the convective boundary layer with both forward-in-time and backward-in-time modes. A Lagrangian stochastic model is used to treat subgrid...

Subramanian, M.; Timmerman, C.K.; Schwartz, J.L.; Pham, D.L.; Meffert, M.K., 2015: Characterizing autism spectrum disorders by key biochemical pathways. The genetic and phenotypic heterogeneity of autism spectrum disorders (ASD) presents a substantial challenge for diagnosis, classification, research, and treatment. Investigations into the underlying molecular etiology of ASD have often yielded mi...

Robison, HW., 1986: Zoogeographic implications of the Mississippi River Basin. Unknown

Varela, E.; Antolín, M.; Guarner, F.; Verges, R.; Giralt, J.; Malagelada, J-R., 2010: Faecal DNA and calprotectin as biomarkers of acute intestinal toxicity in patients undergoing pelvic radiotherapy. Acute intestinal toxicity is a frequent complication that may lead to interruption of treatment in patients undergoing pelvic radiotherapy. Reliable, non-invasive biological markers to evidence their severity are not yet available. To test faecal...

Iughetti, L.; Volta, C.; Palladini, G.; Solazzi, A.; Bellomo, G.; Caselli, G.; Bernasconi, S., 1997: LDL oxidation and anti-oxidants levels in mothers and newborns. Hormone Research (Basel) 48(SUPPL 2): 38

Comani, S.; Mantini, D.; Alleva, G.; D.L.zio, S.; Romani, G.L., 2005: Fetal magnetocardiographic mapping using independent component analysis. Fetal magnetocardiography (fMCG) is the only noninvasive technique allowing effective assessment of fetal cardiac electrical activity during the prenatal period. The reconstruction of reliable magnetic field mapping associated with fetal heart act...