Age specificity of inbreeding depression during a life cycle ofCallosobruchus chinensis (Coleoptera: Bruchidae)
Age-specific effects of inbreeding on fecundity were assayed for adzuki bean weevilCallosobruchus chinensis by comparing inbred lines and their cross. Four consecutive full-sib matings reduced only 10.3 percent in total fecundity, and did not decrease early fecundity at all until third day from the onset of reproduction. It is suggested that recessive detrimental genes have been eliminated from the early period of adult life span when reproductive value is high. There was a slight tendency that inbreeding depression increased as age proceeded though not statistically significant.
KeywordsInbred Line Inbreeding Depression Total Fecundity Adult Life Span Adzuki Bean
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- Charlesworth, B. (1980)Evolution in Age-Structured Population. Cambridge University Press, London.Google Scholar
- Crow, J. F. and M. Kimura (1970)An Introduction to Population Genetics Theory. Harper and Row, New York.Google Scholar
- Falconer, D. S. (1989)Introduction to Quantitative Genetics. 3rd ed. Longman, New York.Google Scholar
- Medawar, P. B. (1952)An Unsolved Problem of Biology. H. K. Lewis, London.Google Scholar
- Rose, M. R. (1982) Antagonistic pleiotropy, dominance, and genetic variation.Heredity 48: 63–78.Google Scholar
- Sokal, R. R. and F. J. Rohlf (1981)Biometry. Freeman.Google Scholar
- Utida, S. (1941a) Studies on experimental population of the azuki bean weevilCallosobruchus chinensis (L.). I. The effect of population density on the progeny population.Mem. Coll. Agric., Kyoto Univ. 48: 1–31.Google Scholar
- Utida, S. (1941b) Studies on experimental population of the azuki bean weevilCallosobruchus chinensis (L.). IV. Analysis of density effect with respect to fecundity and fertility of eggs.Mem. Coll. Agric., Kyoto Univ. 51: 1–26.Google Scholar
- Wallace, B. (1970)Genetic Load. Prentice-Hall, Englewood Cliffs, N.J.Google Scholar