Original Paper

Researches on Population Ecology

, Volume 38, Issue 1, pp 11-17

First online:

How is life history variation generated from the genetic resource allocation?

  • Yoshinari TanakaAffiliated withDepartment of Biology, McGill University

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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.

Key words

antagonistic pleiotropy trade-off resource allocation quantitative genetics life history