Aptitud biológica de poblaciones de Bemisia tabaci (Gennadius) Biotipo B (Hemiptera: Aleyrodidae) con diferente susceptibilidad al insecticida thiametoxam

In two field-collected populations of de Bemisia tabaci (Gennadius) B biotype previously selected with the neonicotinoid insecticide thiamethoxam (NEO-R, NEO-N), and a population susceptible to insecticides (SUSC), the level of response to the insecticide thiametoxam, as well as the life and fertili...

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Bibliographic Details
Published in:Neotropical entomology 2010-06, Vol.39 (3), p.430-435
Main Authors: Campuzano-Martínez, Aidee(Colegio de Postgraduados), Rodríguez-Maciel, J Concepcion(Colegio de Postgraduados), Lagunes-Tejeda, _ngel(Colegio de Postgraduados), Llanderal-Cázares, Celina(Colegio de Postgraduados), Terán-Vargas, Antonio P(Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias), Vera-Graziano, Jorge(Colegio de Postgraduados), Vaquera-Huerta, Humberto(Colegio de Postgraduados), Silva-Aguayo, Gonzalo(Univ de Concepción Facultad de Agronomía Depto de Protección vegetal)
Format: Article
Language:English
Subjects:
fertility table
life table
Neonicotinoid
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Summary:In two field-collected populations of de Bemisia tabaci (Gennadius) B biotype previously selected with the neonicotinoid insecticide thiamethoxam (NEO-R, NEO-N), and a population susceptible to insecticides (SUSC), the level of response to the insecticide thiametoxam, as well as the life and fertility tables were determined. At LC95, the NEO-R population showed a resistance ratio (RR95) value of 8.8-fold, an intrinsic rate of increase (r m) of 0.72. The fitness of the NEO-R and NEO-N populations in relation to the SUSC was 1.5 and 2.0, respectively. The RR95 value for NEO-N was 1.9-fold; it's r m value was 0.082, while in the SUSC population was 0.041. The developmental time of egg and adult were longer in NEO-R population, while the nymph and pupa lasted longer in the NEO-N and SUSC populations. The developmental time was different in the three NEO-R, NEO-N, and SUSC populations with 19.7 d (315.84 degree days or dd), 15.7 d (250.4 dd) and 18.5 d (296.6 d), respectively. The populations previously selected with thiamethoxam did not reproduce faster than their susceptible counterpart.
ISSN:1519-566X
1678-8052
DOI:10.1590/S1519-566X2010000300018