Reproductive overload in D. melanogaster females—Its connection with longevity

Reproductive overload in D. melanogaster females—Its connection with longevity The conception of individual reproduction is that fruit flies are genetically designed to oviposit at the highest possible rate. This rate is maintained right up to the moment when the organism begins to age, and the senescence is characterized by the reproduction rate falling exponentially. The population can be divided into z, s, m, and l-phenotypes depending on their resource allocation. The main part of the population consists of m-phenotype flies with a balanced resource allocation. The flies with z-phenotype are infecund; s-flies do not reach senility; and l-flies, in which the allocation is biased toward somatic organism maintenance, outlast the period of oviposition and die only after they have completely used up their reproductive potential. Individual reproductive patterns and reproductive phenotypes are analyzed for two D. melanogaster populations consisting of 493 and 474 flies. It is shown that there is a mortality curve for each phenotype, and that a part of the population dies out “prematurely” due to reproductive overload. Russian Journal of Developmental Biology Springer Journals

Reproductive overload in D. melanogaster females—Its connection with longevity

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SP MAIK Nauka/Interperiodica
Copyright © 2009 by Pleiades Publishing, Ltd.
Life Sciences; Animal Anatomy / Morphology / Histology; Developmental Biology
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