Author: FOX, CHARLES W.

Source: Annals of the Entomological Society of America, Volume 91, Number 1, January 1998 , pp. 128-134(7)

Publisher: Entomological Society of America

Abstract:

I investigated the relative contributions of genetic and maternal effects to variation in body size and egg-to-development time in 4 populations of the seed beetle Statorlimbatus (Horn), using parent-offspring relationships and a half-sib experiment. Most estimates of the heritability of body size were significantly greater than zero (range was 0.21-0.72, depending on progeny sex and the population). However, there was little evidence of genetic variation in development time in any population. Instead, development time was influenced largely by maternal effects, consistent with the interpretation of previous experiments that larvae adjust the length of their development period to compensate for variation among their mothers. Estimates of genetic and phenotypic covariances between body size and development time were all negative, suggesting that genetic variation in general vigor is present within populations.

Document Type: Research article

Publication date: 1998-01-01

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• Annals of the Entomological Society of America is published in January, March, May, July, September, and November. Annals especially invites submission of manuscripts that integrate different areas of insect biology, and address issues that are likely to be of broad relevance to entomologists. Articles also report on basic aspects of the biology of arthropods, divided into categories by subject matter: systematics; ecology and population biology; arthropod biology; arthropods in relation to plant diseases; conservation biology and biodiversity; physiology, biochemistry, and toxicology; morphology, histology, and fine structure; genetics; and behavior.
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