Social common mole-rats enhance outbreeding via extra-pair mating

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Social common mole-rats enhance outbreeding via extra-pair mating.

Females in many species engage in matings with males that are not their social mates. These matings are predicted to increase offspring heterozygosity and fitness, and thereby prevent the deleterious effects of inbreeding. We tested this hypothesis in a cooperative breeding mammal, the common mole-rat Cryptomys hottentotus hottentotus. Laboratory-based studies suggested a system of strict socia...

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Social and extra-pair mating in relation to major histocompatibility complex variation in common yellowthroats.

Females are thought to gain better-quality genes for their offspring by mating with particular males. Genes of the major histocompatibility complex (MHC) play a critical role in adaptive immunity, and several studies have examined female mate choice in relation to MHC variation. In common yellowthroats, females prefer males that have larger black facial masks, an ornament associated with MHC va...

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Extra-pair Paternity in the Common Murre1

Multi-locus DNA fingerprinting was used to estimate the frequency of extra-pair paternity in the Common Murre (Uria aalge), a colonial, sexually monomorphic seabird that breeds at very high densities and in which extra-pair copulation is frequent. Common Murres produce a single chick. We detected 6 cases of extra-pair paternity in 77 families (7.8%). This value was higher than the proportion of...

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Population Social Structure Facilitates Indirect Fitness Benefits from Extra-Pair Mating

Despite decades of research, empirical support for the “compatible genes” and “good genes” hypotheses as explanations for adaptive female extra-pair mating remains discordant. One largely un-tested theoretical prediction that could explain equivocal findings is that mating for compatible genes benefits should reduce selection for good genes. However, this prediction does not consider demographi...

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How do colonial Eurasian Griffon Vultures prevent extra-pair mating?

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ژورنال

عنوان ژورنال: Biology Letters

سال: 2007

ISSN: 1744-9561,1744-957X

DOI: 10.1098/rsbl.2006.0607