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Titolo:
SELECTION OF DIELDRIN-RESISTANT STRAINS OF LUCILIA-CUPRINA (DIPTERA, CALLIPHORIDAE) AFTER ETHYL METHANESULFONATE MUTAGENESIS OF A SUSCEPTIBLE STRAIN
Autore:
SMYTH KA; PARKER AG; YEN JL; MCKENZIE JA;
Indirizzi:
UNIV MELBOURNE,DEPT GENET PARKVILLE VIC 3052 AUSTRALIA
Titolo Testata:
Journal of economic entomology
fascicolo: 2, volume: 85, anno: 1992,
pagine: 352 - 358
SICI:
0022-0493(1992)85:2<352:SODSOL>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
DROSOPHILA-MELANOGASTER DIPTERA; LABORATORY-SELECTED POPULATION; INSECTICIDE RESISTANCE; MALATHION-RESISTANCE; PESTICIDE RESISTANCE; OPERATIONAL FACTORS; EVOLUTION; CYCLODIENE; FIELD;
Keywords:
INSECTA; LUCILIA-CUPRINA; MUTAGENESIS; DIELDRIN RESISTANCE;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
K.A. Smyth et al., "SELECTION OF DIELDRIN-RESISTANT STRAINS OF LUCILIA-CUPRINA (DIPTERA, CALLIPHORIDAE) AFTER ETHYL METHANESULFONATE MUTAGENESIS OF A SUSCEPTIBLE STRAIN", Journal of economic entomology, 85(2), 1992, pp. 352-358

Abstract

After ethyl methanesulfonate (EMS) mutagenesis of a susceptible strain (SWT), selective screening of Lucilia cuprina (Wiedemann) resulted in four strains that were resistant to the insecticide dieldrin. Concentrations used for selection were > LC99 of susceptible phenotypes. No resistant variants were screened from the standard laboratory strain (SWT) not treated with EMS. The resistance phenotypes of the four resistant strains were similar to each other and to that of a field-selected resistant strain. The genetic basis of resistance is monogenic in all strains and the data are consistent with the same locus, Rdl, determining resistance status in each strain. The Rdl locus maps to chromosome V, almost-equal-to 3.5 map units distal to the Sut locus. Dieldrin resistance may be caused by less effective blocking of insect neuronalGABA receptors by the chemical in resistant strains. The data indicate that the evolution of resistance to an insecticide in the field may be constrained by a limited number of genetical and biochemical options if a monogenic response is selected for and that the spontaneous mutation rate to the Rdl allele is < 1 in 10(6) in the laboratory.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 06:57:30