CACOPSYLLA-PYRI (L) (HOMOPTERA, PSYLLIDAE ) ESTERASE POLYMORPHISM ANDINSECTICIDE RESISTANCE

Authors
BUES R TOUBON JF RIEUX R DARCIER FF
Citation
R. Bues et al., CACOPSYLLA-PYRI (L) (HOMOPTERA, PSYLLIDAE ) ESTERASE POLYMORPHISM ANDINSECTICIDE RESISTANCE, Comptes rendus de l'Academie des sciences. Serie 3, Sciences de la vie, 317(12), 1994, pp. 1115-1121
Citations number
17
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie 3, Sciences de la vie → ACNP
ISSN journal
07644469
Volume
317
Issue
12
Year of publication
1994
Pages
1115 - 1121
Database
ISI
SICI code
0764-4469(1994)317:12<1115:C((P)E>2.0.ZU;2-A
Abstract
The electrophoretic analysis of esterases in pear psylla elicits the p resence of 2 well differenciated esterases with high activity. Their g eographic distribution gradients show the existence a genetic flow bet ween populations. LD50 for azymphos-methyl and deltamethrin are respec tively 4 and 7 times higher for the population of Avignon than for Ano gers and the synergistic action of DEF 2 and 5 times. Seasonal fluctua tions of esterases activity and af susceptibility to azymphos-methyl h ave been observed within the Avignon population. Our results support t he hypothesis of a link between esterases activity and insecticide res istance.