SEXUAL CONFLICT AND INTERACTING PHENOTYPES: A QUANTITATIVE GENETIC ANALYSIS OF FECUNDITY AND COPULA DURATION IN<i>DROSOPHILA MELANOGASTER</i>

Edward, Dominic A.; Poissant, Jocelyn; Wilson, Alastair J.; Chapman, Tracey

doi:10.1111/evo.12376

Cited by 32 publications

(31 citation statements)

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“…In D. melanogaster, the genotype of male mating partners exerts a significant impact on copulation duration, illustrating that it is not solely under female control (Edward et al 2014). Nevertheless, other female traits that would be expected to be susceptible to sexual conflict dynamics such as egg production showed no IGEs (Edward et al 2014). Another D. melanogaster study recovered a significant effect of male partner identity on female fecundity, consistent with a male IGE affecting female fitness components (Tennant et al 2014).…”

Section: Empirical Evidence For Iges In Behavioral Ecology Researchmentioning

confidence: 82%

“…As these were lab mice, the researchers mapped genomic loci that might play a role in mediating those effects, providing clues about causal offspring behaviors, such as solicitation, to which mothers responded. In D. melanogaster, the genotype of male mating partners exerts a significant impact on copulation duration, illustrating that it is not solely under female control (Edward et al 2014). Nevertheless, other female traits that would be expected to be susceptible to sexual conflict dynamics such as egg production showed no IGEs (Edward et al 2014).…”

Section: Empirical Evidence For Iges In Behavioral Ecology Researchmentioning

confidence: 99%

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Indirect genetic effects in behavioral ecology: does behavior play a special role in evolution?

2017

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Behavior is rapidly flexible and highly context-dependent, which poses obvious challenges to researchers attempting to dissect its causes. However, over a century of unresolved debate has also focused on whether the very flexibility and context-dependence of behavior lends it a unique role in the evolutionary origins and patterns of diversity in the Animal Kingdom. Here, we propose that both challenges can benefit from studying how indirect genetic effects (IGEs: the effects of genes expressed in one individual on traits in another individual) shape behavioral phenotypes. We provide a sketch of the theoretical framework that grounds IGEs in behavioral ecology research and focus on recent advances made from studies of IGEs in areas of behavioral ecology such as sexual selection, sexual conflict, social dominance, and parent-offspring interactions. There is mounting evidence that IGEs have important influences on behavioral phenotypes associated with these processes, such as sexual signals and preferences and behaviors which function to manipulate interacting partners. IGEs can also influence both responses to selection and selection itself, and considering IGEs refines evolutionary predictions and provides new perspectives on the origins of seemingly perplexing behavioral traits. A key unresolved question, but one that has dominated the behavioral sciences for over a century, is whether behavior is more likely than other types of traits to contribute to evolutionary change and diversification. We advocate taking advantage of an IGE approach to outline falsifiable hypotheses and a general methodology to rigorously test this frequently proposed, yet still contentious, special role of behavior in evolution.

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Section: Empirical Evidence For Iges In Behavioral Ecology Researchmentioning

confidence: 82%

Section: Empirical Evidence For Iges In Behavioral Ecology Researchmentioning

confidence: 99%

Indirect genetic effects in behavioral ecology: does behavior play a special role in evolution?

2017

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“…; Edward et al . ). For breeding date, direct and indirect effects might, respectively, arise via the female, who conceives the offspring, and via her mate, who may influence the timing of conception (e.g.…”

Section: Introductionmentioning

confidence: 97%

Direct and indirect genetic and fine‐scale location effects on breeding date in song sparrows

Germain

Wolak

Arcese

et al. 2016

Journal of Animal Ecology

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Quantifying direct and indirect genetic effects of interacting females and males on variation in jointly expressed life-history traits is central to predicting microevolutionary dynamics. However, accurately estimating sex-specific additive genetic variances in such traits remains difficult in wild populations, especially if related individuals inhabit similar fine-scale environments. Breeding date is a key life-history trait that responds to environmental phenology and mediates individual and population responses to environmental change. However, no studies have estimated female (direct) and male (indirect) additive genetic and inbreeding effects on breeding date, and estimated the cross-sex genetic correlation, while simultaneously accounting for fine-scale environmental effects of breeding locations, impeding prediction of microevolutionary dynamics. We fitted animal models to 38 years of song sparrow (Melospiza melodia) phenology and pedigree data to estimate sex-specific additive genetic variances in breeding date, and the cross-sex genetic correlation, thereby estimating the total additive genetic variance while simultaneously estimating sex-specific inbreeding depression. We further fitted three forms of spatial animal model to explicitly estimate variance in breeding date attributable to breeding location, overlap among breeding locations and spatial autocorrelation. We thereby quantified fine-scale location variances in breeding date and quantified the degree to which estimating such variances affected the estimated additive genetic variances. The non-spatial animal model estimated nonzero female and male additive genetic variances in breeding date (sex-specific heritabilities: 0·07 and 0·02, respectively) and a strong, positive cross-sex genetic correlation (0·99), creating substantial total additive genetic variance (0·18). Breeding date varied with female, but not male inbreeding coefficient, revealing direct, but not indirect, inbreeding depression. All three spatial animal models estimated small location variance in breeding date, but because relatedness and breeding location were virtually uncorrelated, modelling location variance did not alter the estimated additive genetic variances. Our results show that sex-specific additive genetic effects on breeding date can be strongly positively correlated, which would affect any predicted rates of microevolutionary change in response to sexually antagonistic or congruent selection. Further, we show that inbreeding effects on breeding date can also be sex specific and that genetic effects can exceed phenotypic variation stemming from fine-scale location-based variation within a wild population.

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“…Thus, our variance partitioning analysis of mating rate supports the presence of first‐order (from the female) but not second‐order (from the previously encountered male rival) IGEs. The former result adds weight to the growing recognition of IGEs on mating behaviors (Bacigalupe et al, ; Edward et al, ; Hall et al, ; House et al, ; Tennant et al, ), including mate choice (Bailey & Zuk, ; Bailey & Macleod, ; Rebar & Rodriguez, ) and courtship provisioning (Teplitsky, Mills, Yarrall, & Merilä, ). The specific female trait(s) giving rise to indirect genetic variance in N. vespilloides is unknown but does not appear to be body size—either in an absolute sense or relative to that of the male.…”

Section: Discussionmentioning

confidence: 98%

The role of indirect genetic effects in the evolution of interacting reproductive behaviors in the burying beetle,Nicrophorus vespilloides

Carter

Wilson

Moore

et al. 2019

Ecology and Evolution

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Social interactions can give rise to indirect genetic effects (IGEs), which occur when genes expressed in one individual affect the phenotype of another individual. The evolutionary dynamics of traits can be altered when there are IGEs. Sex often involves indirect effects arising from first‐order (current) or second‐order (prior) social interactions, yet IGEs are infrequently quantified for reproductive behaviors. Here, we use experimental populations of burying beetles that have experienced bidirectional selection on mating rate to test for social plasticity and IGEs associated with focal males mating with a female either without (first‐order effect) or with (second‐order effect) prior exposure to a competitor, and resource defense behavior (first‐order effect). Additive IGEs were detected for mating rate arising from (first‐order) interactions with females. For resource defense behavior, a standard variance partitioning analysis provided no evidence of additive genetic variance—either direct or indirect. However, behavior was predicted by focal size relative to that of the competitor, and size is also heritable. Assuming that behavior is causally dependent on relative size, this implies that both DGEs and IGEs do occur (and may potentially interact). The relative contribution of IGEs may differ among social behaviors related to mating which has consequences for the evolutionary trajectories of multivariate traits.

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SEXUAL CONFLICT AND INTERACTING PHENOTYPES: A QUANTITATIVE GENETIC ANALYSIS OF FECUNDITY AND COPULA DURATION INDROSOPHILA MELANOGASTER

Cited by 32 publications

References 74 publications

Indirect genetic effects in behavioral ecology: does behavior play a special role in evolution?

Indirect genetic effects in behavioral ecology: does behavior play a special role in evolution?

Direct and indirect genetic and fine‐scale location effects on breeding date in song sparrows

The role of indirect genetic effects in the evolution of interacting reproductive behaviors in the burying beetle,Nicrophorus vespilloides

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