Sexual selection in complex communities: Integrating interspecific reproductive interference in structured populations

McDonald, Grant C.; Gardner, Andy; Pizzari, Tommaso

doi:10.1111/evo.13726

Cited by 7 publications

(4 citation statements)

References 136 publications

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“…The imminent risk of predation is certainly a relevant ecological factor with marked effects on prey population dynamics [30], and processes associated with mating are expected to be particularly sensitive to it [28]. Considering that predation is expected to increase the cost of mating [72], a reduction of polyandry under imminent risk may be a general phenomenon.…”

Section: Discussionmentioning

confidence: 99%

“…For example, population density [22][23][24][25] or short-term food limitation [26,27] can significantly alter sexual selection dynamics, including sperm competition. Withinpopulation variability in the strength of sperm competition may also result from interaction with heterospecifics, which may interfere with the operation of sexual selection at many levels [28].…”

Section: Introductionmentioning

confidence: 99%

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Imminent risk of predation reduces the relative strength of postcopulatory sexual selection in the guppy

Glavaschi

Cattelan

Grapputo

et al. 2020

Phil. Trans. R. Soc. B

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Fifty years of research on sperm competition has led to a very good understanding of the interspecific variation in sperm production traits. The reasons why this variation is often very large within populations have been less investigated. We suggest that the interaction between fluctuating environmental conditions and polyandry is a key phenomenon explaining such variation. We focus here on imminent predation risk (IPR). IPR impacts significantly several aspects of prey behaviour and reproduction, and it is expected to influence the operation of sexual selection before and after mating. We estimated the effect of IPR on the male opportunity for pre- and postcopulatory sexual selection in guppies ( Poecilia reticulata ), a livebearing fish where females prefer colourful males and mate multiply. We used a repeated-measures design, in which males were allowed to mate with different females either under IPR or in a predator-free condition. We found that IPR increased the total opportunity for sexual selection and reduced the relative contribution of postcopulatory sexual selection to male reproductive success. IPR is inherently variable and our results suggest that interspecific reproductive interference by predators may contribute towards maintaining the variation in sperm production within populations. This article is part of the theme issue ‘Fifty years of sperm competition'.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Imminent risk of predation reduces the relative strength of postcopulatory sexual selection in the guppy

Glavaschi

Cattelan

Grapputo

et al. 2020

Phil. Trans. R. Soc. B

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“…We found examples of such multispecies DG-ABMs used to investigate mating interactions: for instance, using an ABM in which two plant species share the same pollinators,Katsuhara et al (2021) highlighted that the evolution of selfing without pollinator assistance (autonomous selfing) may increase population growth rates of inferior competitors and consequently favour long-term coexistence via an evolutionary rescue. Furthermore,McDonald et al (2019) showed that the strength of intraspecific competition for mates may result from sexual interactions with heterospecifics, which may interfere with sexual selection (i.e. interspecific reproductive interference).Most of the reviewed multispecies DG-ABMs focussed on competitive interactions, in an explicit prey-predators' or community context.…”

mentioning

confidence: 99%

Importance of interindividual interactions in eco‐evolutionary population dynamics: The rise of demo‐genetic agent‐based models

Lamarins

Fririon

Folio

et al. 2022

Evolutionary Applications

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The study of eco‐evolutionary dynamics, that is of the intertwinning between ecological and evolutionary processes when they occur at comparable time scales, is of growing interest in the current context of global change. However, many eco‐evolutionary studies overlook the role of interindividual interactions, which are hard to predict and yet central to selective values. Here, we aimed at putting forward models that simulate interindividual interactions in an eco‐evolutionary framework: the demo‐genetic agent‐based models (DG‐ABMs). Being demo‐genetic, DG‐ABMs consider the feedback loop between ecological and evolutionary processes. Being agent‐based, DG‐ABMs follow populations of interacting individuals with sets of traits that vary among the individuals. We argue that the ability of DG‐ABMs to take into account the genetic heterogeneity—that affects individual decisions/traits related to local and instantaneous conditions—differentiates them from analytical models, another type of model largely used by evolutionary biologists to investigate eco‐evolutionary feedback loops. Based on the review of studies employing DG‐ABMs and explicitly or implicitly accounting for competitive, cooperative or reproductive interactions, we illustrate that DG‐ABMs are particularly relevant for the exploration of fundamental, yet pressing, questions in evolutionary ecology across various levels of organization. By jointly modelling the effects of management practices and other eco‐evolutionary processes on interindividual interactions and population dynamics, DG‐ABMs are also effective prospective and decision support tools to evaluate the short‐ and long‐term evolutionary costs and benefits of management strategies and to assess potential trade‐offs. Finally, we provide a list of the recent practical advances of the ABM community that should facilitate the development of DG‐ABMs.

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“…The scale of competition, also called the softness of selection (Christiansen 1975 ; Wallace 1975 ; Gardner and West 2004 ; Débarre and Gandon 2011 ; De Lisle and Svensson 2017 ; McDonald et al. 2019 ), is fundamental in studying natural and sexual selection in metapopulations. Soft selection and hard selection refer to situations where offspring production of the local population is independent of, or directly proportional to, the competitiveness of its members, respectively.…”

Section: Introductionmentioning

confidence: 99%

Softness of selection and mating system interact to shape trait evolution under sexual conflict

Hollis

2021

Evolution

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Sexual selection and sexual conflict play central roles in driving the evolution of male and female traits. Experimental evolution provides a powerful approach to study the operation of these forces under controlled environmental and demographic conditions, thereby allowing direct comparisons of evolutionary trajectories under different treatments such as mating systems. Despite the rapid progress of experimental and statistical techniques that support experimental evolution studies, we still lack clear theoretical predictions on the effects of different mating systems beyond what intuition suggests. For example, polygamy (several males and females in a mating group) and polyandry (one single female and multiple males in a mating group) have each been used as treatments that elevate sexual selection on males and sexual conflict relative to monogamy. However, polygamy and polyandry manipulations sometimes produce different evolutionary outcomes, and the precise reasons why remain elusive. In addition, the softness of selection (i.e., scale of competition within each sex) is known to affect trait evolution, and is an important factor to consider in experimental design. To date, no model has specifically investigated how the softness of selection interacts with different mating systems. Here, we try to fill these gaps by generating clear and readily testable predictions. Our set of models were designed to capture the most important life cycle events in typical experimental evolution studies, and we use simulated changes of sex‐specific gene expression profiles (i.e., feminization or masculinization) to quantify trait evolution under different selection schemes. We show that interactions between the softness of selection and the mating system can produce results that have been identified as counterintuitive in previous empirical work such as polyandry producing stronger feminization than monogamy. We conclude by encouraging a stronger integration of modelling in future experimental evolution studies and pointing out remaining knowledge gaps for future theoretical work.

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Sexual selection in complex communities: Integrating interspecific reproductive interference in structured populations

Cited by 7 publications

References 136 publications

Imminent risk of predation reduces the relative strength of postcopulatory sexual selection in the guppy

Imminent risk of predation reduces the relative strength of postcopulatory sexual selection in the guppy

Importance of interindividual interactions in eco‐evolutionary population dynamics: The rise of demo‐genetic agent‐based models

Softness of selection and mating system interact to shape trait evolution under sexual conflict

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