Authors: Miyo, T.; Keil, C. B. O.; Hough-Goldstein, J. A.; Oguma, Y.

Source: Journal of Economic Entomology, Volume 92, Number 5, October 1999 , pp. 1031-1038(8)

Publisher: Entomological Society of America

Abstract:

The inheritance of resistance to esfenvalerate in Colorado potato beetles, Leptinotarsa decemlineata (Say), was examined using quantitative genetic analysis. Selection on a field-resistant strain was conducted for 2 generations to estimate the realized heritability of esfenvalerate resistance. Bioassay data from selection experiments indicated that the resistant strain had little genetic variation in esfenvalerate susceptibility, because the resistance level was not significantly increased compared with the initial laboratory generation. The realized heritability was estimated as 0.45, indicating a moderate heritability, although it was not significant. The log LD₅₀ value was partitioned into several components after bioassay data of F₁ progeny from reciprocal crosses indicated that esfenvalerate resistance was inherited in a sex-linked, semirecessive fashion. Partitioning of the log LD₅₀ value detected significant additive and dominant effects of sex chromosomal factor(s) but not autosomal factor(s). Based on the detected effects, the degree of dominance of esfenvalerate resistance was estimated as 0.262, indicating esfenvalerate resistance was semirecessive. This study confirmed that resistance to esfenvalerate in Colorado potato beetles was sex-linked, semirecessive.

Keywords: Leptinotarsa decemlineata; insecticide resistance; esfenvalerate; degree of dominance; quantitative genetic analysis

Document Type: Research article

Publication date: 1999-10-01

More about this publication?

• Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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