Male genotype affects female fitness in a paternally investing species.

Male genotype affects female fitness in a paternally investing species. Research Abstract Details 

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Male genotype affects female fitness in a paternally investing species. Abstract Text:

Male nutrient provisioning is widespread in insects. Females of some species use male-derived nutrients for increased longevity and reproductive output. Despite much research into the consequences of paternal nutrient investment for male and female fitness, the heritability, and therefore the potential of this trait to respond to selection, has rarely been examined. Males of several butterfly species provide the female with nutrients in the spermatophore at mating. Females of the green-veined white butterfly Pieris napi (Lepidoptera: Pieridae) use male donations both for developing eggs (resulting in higher lifetime fecundity of multiply mated females), but also for their somatic maintenance (increasing longevity). Using half-sib, father-son regression and full-sib analyses, I showed that paternal nutrient investment is heritable, both in terms of the absolute but also the relative size of the spermatophore (controlling for body size). Male size and spermatophore size were also genetically correlated. Furthermore, a separate study showed male genotype had a significant effect on female longevity and lifetime fecundity. In contrast, male genotype had no influence on the immediate egg-laying rate of females following mating, suggesting limited scope for male manipulation of immediate female oviposition. These results indicate that females may derive both direct (increased lifetime fecundity and longevity) and indirect (sons with greater reproductive success) fitness benefits from paternal nutrient donations in this species.

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Male genotype affects female fitness in a paternally investing species. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Evolution; international journal of organic evolut

VOLUME: 60

Page Numbers: 1638-45

Journal Abbreviation: Evolution

ISSN: 0014-3820

DAY: 4

MONTH: Aug

YEAR: 2006

Male genotype affects female fitness in a paternally investing species. Information

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LANGUAGE: eng

NlmUniqueID: 373224

Male genotype affects female fitness in a paternally investing species. Keywords Mesh Terms:

KEYWORDS: Variation (Genetics)

MESH TERMS: physiology

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Grant and Affiliation Information for Male genotype affects female fitness in a paternally investing species.

AFFILIATION: Ecology and Evolution Group, School of Biology, University of Leeds, Leeds LS2 9JT, United Kingdom. n.wedell@exeter.ac.uk

Country: United States

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MEDLINETA: Evolution

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