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Intersexual antagonistic coevolution

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  • This interlocus sexual conflict (IRSC) has been proposed as a cause of perpetual intersexual antagonistic coevolution with wide-ranging.
  • First, the dynamics of sexually antagonistic coevolution may obscure the conflict itself. Second, competing models of inter-sexual coevolution. relaxes intersexual conflict and increases the benefits of male benevolence toward females, Sexually Antagonistic Coevolution and Parental Investment.
  • Human Fertility Behavior in Biodemographic Perspective.

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We begin by providing an operational definition of fleshly conflict that applies to both inter- and intralocus conflict. Using this distinctness, we examine a series of simple coevolutionary models to elucidate fruitful approaches for detecting interlocus sensual conflict and resultant sexually antagonistic coevolution. We soon after use published empirical examples to illustrate the utility of these approaches. Three relevant attributes emerge. Beginning, the dynamics of sexually antagonistic coevolution may cryptic the conflict itself.

Inferior, competing models of inter-sexual coevolution may yield like population patterns near equilibria. Third, a variety of evolutionary forces underlying competing models may be acting simultaneously near equilibria. Sole main conclusion is that studies of emergent patterns in extant populations e. Instead, we need more research aimed at identifying the forces of pick acting on shared traits and sexually antagonistic traits.

More specifically, we essential a greater number of functional studies of female traits as well as studies of the consequences of both male and female traits for female fitness.

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January 8, ; Accepted: Box , Washington, D. Genital morphology is informative phylogenetically and strongly selected sexually. We use a recent species-level phylogeny of nephilid spiders to synthesize phylogenetic patterns in nephilid genital evolution that document generalized conflict between male and female interests. Specifically, we test the intersexual coevolution hypothesis by defining gender-specific indices of genital complexity that summarize all relevant and phylogenetically informative traits.

We then use independent contrasts to show that male and female genital complexity indices correlate significantly and positively across the phylogeny rather than among sympatric sister species, as predicted by reproductive character displacement. In males morphological symptoms of these phenomena range from self-mutilated genitalia to total castration. Although the results are compatible with both recently favored sexual selection hypotheses, sexually antagonistic coevolution, and cryptic female choice, the evidence of strong intersexual conflict and genitalic damage in both sexes is more easily explained as sexually antagonistic coevolution due to an evolutionary arms race.

Cryptic female choice , monogamy , morphological complexity , polyandry , reproductive character displacement , sexual conflict , sexually antagonistic coevolution , sperm competition.

1. Introduction

Strike , SI Ljubljana, Slovenia. Genital morphology is illuminating phylogenetically and strongly selected sexually. We use a recent species-level phylogeny of nephilid spiders to synthesize phylogenetic patterns in nephilid genital progression that record generalized antagonism between manly and female interests. Specifically, we examine the intersexual coevolution premiss by defining gender-specific indices of genital complexity that summarize all relevant and phylogenetically illuminating traits.

We then usage independent contrasts to verify that man's and female genital intricacy indices correlate significantly and positively over the phylogeny rather than among sympatric sister species, as predicted by reproductive character displacement.

In males morphological symptoms of these phenomena drift from self-mutilated genitalia to total castration.

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  • SPECIFICALLY, WE TEST THE INTERSEXUAL COEVOLUTION HYPOTHESIS BY DEFINING SEXUALLY ANTAGONISTIC COEVOLUTION, AND...
  • EXPERIMENTAL REMOVAL OF SEXUAL SELECTION REVERSES INTERSEXUAL ANTAGONISTIC COEVOLUTION AND...
  • ALTHOUGH THE RESULTS ARE COMPATIBLE WITH BOTH RECENTLY FAVORED SEXUAL SELECTION HYPOTHESES, SEXUALLY ANTAGONISTIC COEVOLUTION, AND CRYPTIC FEMALE CHOICE, THE.

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Once a Wuss, Always a Wuss? First, the dynamics of sexually antagonistic coevolution may obscure the conflict itself. Second, competing models of inter-sexual coevolution. Specifically, we test the intersexual coevolution hypothesis by defining sexually antagonistic coevolution, and cryptic female choice, the evidence of strong..

Intersexual antagonistic coevolution

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