Inbreeding Avoidance in Male Primates: A Response to Female Mate Choice?

Tennenhouse, Erica

doi:10.1111/eth.12187

Cited by 13 publications

(12 citation statements)

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“…We compare autosomal diversity in small populations that allow or prohibit full and half sibling matings. This scenario formalizes recent observations of chimpanzee inbreeding avoidance, which is assumed to be an evolutionary strategy to increase genetic fitness [18]. These simulations confirm (and quantify) that societies with inbreeding avoidance maintain higher levels of genetic diversity, hence suggesting one possible evolutionary advantage of this practice.…”

Section: Resultssupporting

confidence: 84%

SMARTPOP: inferring the impact of social dynamics on genetic diversity through high speed simulations

Guillot

Cox

2014

BMC Bioinformatics

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BackgroundSocial behavior has long been known to influence patterns of genetic diversity, but the effect of social processes on population genetics remains poorly quantified – partly due to limited community-level genetic sampling (which is increasingly being remedied), and partly to a lack of fast simulation software to jointly model genetic evolution and complex social behavior, such as marriage rules.ResultsTo fill this gap, we have developed SMARTPOP – a fast, forward-in-time genetic simulator – to facilitate large-scale statistical inference on interactions between social factors, such as mating systems, and population genetic diversity. By simultaneously modeling genetic inheritance and dynamic social processes at the level of the individual, SMARTPOP can simulate a wide range of genetic systems (autosomal, X-linked, Y chromosomal and mitochondrial DNA) under a range of mating systems and demographic models. Specifically designed to enable resource-intensive statistical inference tasks, such as Approximate Bayesian Computation, SMARTPOP has been coded in C++ and is heavily optimized for speed and reduced memory usage.ConclusionSMARTPOP rapidly simulates population genetic data under a wide range of demographic scenarios and social behaviors, thus allowing quantitative analyses to address complex socio-ecological questions.

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Section: Resultssupporting

confidence: 84%

SMARTPOP: inferring the impact of social dynamics on genetic diversity through high speed simulations

Guillot

Cox

2014

BMC Bioinformatics

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“…Where females are able to influence paternity of their offspring (e.g. through postcopulatory mechanisms such as sperm competition; Simmons 2005 and/or selective abortion; Thomas et al 1985), this may also influence the optimal mate choice strategies of males (Tennenhouse 2014); males have little to gain through investment in mateguarding or fighting to monopolize access to a particular female if she then rejects him as a mate or reduces his fertilization success postcopulation. This means that males may be observed to preferentially direct mating effort towards unrelated females even in the absence of any inbreeding costs to themselves.…”

Section: Discussionmentioning

confidence: 99%

Banded mongooses avoid inbreeding when mating with members of the same natal group

et al. 2015

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Inbreeding and inbreeding avoidance are key factors in the evolution of animal societies, influencing dispersal and reproductive strategies which can affect relatedness structure and helping behaviours. In cooperative breeding systems, individuals typically avoid inbreeding through reproductive restraint and/or dispersing to breed outside their natal group. However, where groups contain multiple potential mates of varying relatedness, strategies of kin recognition and mate choice may be favoured. Here, we investigate male mate choice and female control of paternity in the banded mongoose (Mungos mungo), a cooperatively breeding mammal where both sexes are often philopatric and mating between relatives is known to occur. We find evidence suggestive of inbreeding depression in banded mongooses, indicating a benefit to avoiding breeding with relatives. Successfully breeding pairs were less related than expected under random mating, which appeared to be driven by both male choice and female control of paternity. Male banded mongooses actively guard females to gain access to mating opportunities, and this guarding behaviour is preferentially directed towards less closely related females. Guard–female relatedness did not affect the guard's probability of gaining reproductive success. However, where mate‐guards are unsuccessful, they lose paternity to males that are less related to the females than themselves. Together, our results suggest that both sexes of banded mongoose use kin discrimination to avoid inbreeding. Although this strategy appears to be rare among cooperative breeders, it may be more prominent in species where relatedness to potential mates is variable, and/or where opportunities for dispersal and mating outside of the group are limited.

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“…Offspring fitness is typically reduced by parental inbreeding, generating a widespread presumption that evolution of inbreeding avoidance is inevitable in populations with biparental reproduction (Keller and Waller 2002;Geffen et al 2011;Szulkin et al 2013;Tennenhouse 2014;Reid et al 2015a). However, increased transmission of alleles causing inbreeding can mean that inbreeding tolerance or preference is adaptive even given moderate inbreeding depression (Parker 2006;Kokko and Ots 2006;Szulkin et al 2013;Duthie and Reid 2015).…”

Section: Evolution Of Inbreeding Strategymentioning

confidence: 99%

“…; Szulkin et al. ; Tennenhouse ), theory highlights that there can be an inclusive fitness benefit of inbreeding, stemming from increased transmission of underlying alleles (Parker , ; Kokko and Ots ; Duthie and Reid ; Lehtonen and Kokko ). Consequently, if inbreeding depression is weak, inbreeding tolerance or preference might evolve.…”

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confidence: 99%

“…For example, understanding the joint evolution of polyandry and inbreeding is complicated by a paucity of clear predictions regarding the evolution of inbreeding avoidance itself, especially in the context of small populations with separate sexes (i.e., dioecy) and hence obligate biparental reproduction. While it is often presumed that inbreeding depression will cause adaptive evolution of inbreeding avoidance (Pusey and Wolf 1996;Tregenza and Wedell 2002;Geffen et al 2011;Szulkin et al 2013;Tennenhouse 2014), theory highlights that there can be an inclusive fitness benefit of inbreeding, stemming from increased transmission of underlying alleles (Parker 1979(Parker , 2006Kokko and Ots 2006;Duthie and Reid 2015;Lehtonen and Kokko 2015). Consequently, if inbreeding depression is weak, inbreeding tolerance or preference might evolve.…”

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confidence: 99%

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When does female multiple mating evolve to adjust inbreeding? Effects of inbreeding depression, direct costs, mating constraints, and polyandry as a threshold trait

2016

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Polyandry is often hypothesized to evolve to allow females to adjust the degree to which they inbreed. Multiple factors might affect such evolution, including inbreeding depression, direct costs, constraints on male availability, and the nature of polyandry as a threshold trait. Complex models are required to evaluate when evolution of polyandry to adjust inbreeding is predicted to arise. We used a genetically explicit individual‐based model to track the joint evolution of inbreeding strategy and polyandry defined as a polygenic threshold trait. Evolution of polyandry to avoid inbreeding only occurred given strong inbreeding depression, low direct costs, and severe restrictions on initial versus additional male availability. Evolution of polyandry to prefer inbreeding only occurred given zero inbreeding depression and direct costs, and given similarly severe restrictions on male availability. However, due to its threshold nature, phenotypic polyandry was frequently expressed even when strongly selected against and hence maladaptive. Further, the degree to which females adjusted inbreeding through polyandry was typically very small, and often reflected constraints on male availability rather than adaptive reproductive strategy. Evolution of polyandry solely to adjust inbreeding might consequently be highly restricted in nature, and such evolution cannot necessarily be directly inferred from observed magnitudes of inbreeding adjustment.

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Inbreeding Avoidance in Male Primates: A Response to Female Mate Choice?

Cited by 13 publications

References 99 publications

SMARTPOP: inferring the impact of social dynamics on genetic diversity through high speed simulations

SMARTPOP: inferring the impact of social dynamics on genetic diversity through high speed simulations

Banded mongooses avoid inbreeding when mating with members of the same natal group

When does female multiple mating evolve to adjust inbreeding? Effects of inbreeding depression, direct costs, mating constraints, and polyandry as a threshold trait

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