How is life history variation generated from the genetic resource allocation? |
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| Authors: | Yoshinari Tanaka |
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| Institution: | (1) Department of Biology, McGill University, 1205 Dr. Penfield Avenue, H3A 1B1 Montreal, Quebec, Canada;(2) Present address: Laboratory of Theoretical Ecology, Institute of Environmental Science and Technology, Yokohama National University, Tokiwadai 156, 240 Yiokohama, Japan |
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| Abstract: | A simple quantitative genetic model is proposed to explain the observed genetic correlation structure of a bruchid beetleCallosobruchus chinensis in terms of two underlying variables: the resource acquisition and the resource allocation. Heritabilities and genetic correlations
among age-specific, fecundities are regarded as consequences of genetic variations of the two variables. Genetic correlations
are predominantly positive in both predictions and observations. Nonetheless, comparison between observed and predicted values
in heritabilities, genetic correlations, and genetic principal components suggested significant genetic variances both of
the resource allocation and the resource acquisition. The prediction of the model is discussed in relation, to experimental
tests of trade-off in life history evolution. |
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| Keywords: | antagonistic pleiotropy trade-off resource allocation quantitative genetics life history |
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