Males and females gain differentially from sociality in a promiscuous fruit bat Cynopterus sphinx

PloS One
Kritika M GargUma Ramakrishnan

Abstract

Sociality emerges when the benefits of group living outweigh its costs. While both males and females are capable of strong social ties, the evolutionary drivers for sociality and the benefits accrued maybe different for each sex. In this study, we investigate the differential reproductive success benefits of group membership that males and females might obtain in the promiscuous fruit bat Cynopterus sphinx. Individuals of this species live in flexible social groups called colonies. These colonies are labile and there is high turnover of individuals. However, colony males sire more offspring within the colony suggesting that being part of a colony may result in reproductive benefits for males. This also raises the possibility that long-term loyalty towards the colony may confer additional advantage in terms of higher reproductive success. We used ten seasons of genetic parentage data to estimate reproductive success and relatedness of individuals in the colony. We used recapture data to identify long and short-term residents in the colony as well as to obtain rates of recapture for males and females. Our results reveal that males have a significantly higher chance of becoming long-term residents (than females), and these long-te...Continue Reading

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Jun 26, 2012·Molecular Ecology·Kritika M GargUma Ramakrishnan

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Methods Mentioned

BETA
biopsy
Genotyping
PCR

Software Mentioned

GENEMAPPER
MARK
TANDEM
Coancestry

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