The dynamics of operational sex ratios and competition for mates in Orlando

Selective abortion in plants may represent a form of cryptic female choice see reviews in Willson and Burley ; Skogsmyr and Lankinenalthough in plants female choice may be difficult to distinguish from parent-offspring conflict Skogsmyr and Lankinen Protandry and the evolution of environmentally mediated sex change: a study of the Mollusca.

Trends Ecol Evol — Behaviour91— Koenig and Albano argued that the mere existence of a skewed sex ratio is not de facto evidence for sexual selection, stating that if mating were at random, sexual selection would not occur even with a skewed sex ratio.

the dynamics of operational sex ratios and competition for mates in Orlando

Hirudinea: Glossiphoniidae. Documented in sequential and some simultaneous hermaphrodites; sneaker males in serranines, fighting in Ophytrocha. The effect of self-fertilization on the evolution of mating systems has received considerable attention from a theoretical standpoint for example, Jarne and Charlesworth ; Pannell and Barrett ; Tsitrone and others a.

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Remarkable species diversity in malagasy mouse lemurs Primates, Microcebus. Received : 05 October This is a preview of subscription content, log in to check access. Naturalist— Many mating systems in pair-mating hermaphrodites involve either simultaneously or serially reciprocal mating.

Parental investment and the control of sexual selection; predicting the direction of sexual competition. Sources of variation in lifetime reproductive success in a non-territorial damselfly Odonata: Coenagrionidae.

  • Metrics details.
  • Metrics details. Conflicts of interest between the sexes are increasingly recognized as an engine driving the co- evolution of reproductive traits.
  • Polygynous animals are often highly dimorphic, and show large sex-differences in the degree of intra-sexual competition and aggression, which is associated with biased operational sex ratios OSR. For socially monogamous, sexually monomorphic species, this relationship is less clear.
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  • In many species, population sex ratios have far-reaching consequences for a wide variety of population-level and behavioural processes and can directly influence sexual selection through differential effects on male and female mating behaviour.

Mittermeier, R. Solitary and gregarious prosimians: evolution of social structures in primates. The relationship of self-fertilization to sexual selection in hermaphrodites has received less attention but see Tsitrone and others b.

Selective abortion in plants may represent a form of cryptic female choice see reviews in Willson and Burley ; Skogsmyr and Lankinen , although in plants female choice may be difficult to distinguish from parent-offspring conflict Skogsmyr and Lankinen Citing articles via Web of Science

The dynamics of operational sex ratios and competition for mates in Orlando

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  • The operational sex ratio (OSR) is central in predicting the intensity of mating competition and which sex is competing for which. Thanks to recent theoretical and. Manipulation of the operational sex ratio (OSR) in guppies, Poecilia reticulata, causes changes in male–male competition and female mate choice. C. Kvarnemo, I. AhnesjöThe dynamics of operational sex ratios and competition for mates theEvolution of Animal Mating Strategies, Academic Press, Orlando (​), pp.
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  • we assessed the effect of operational sex ratio on cop- In theory, a biased OSR will increase competition dynamics. Tejedo () measured male and female density of the toad, Bufo calamita, Males mate with Orlando, pp PDF | Manipulation of the operational sex ratio (OSR) in guppies, Poecilia reticulata, causes changes in male-male competition and female mate choice. | Find, read and cite all mating dynamics: spatial variation in density and sex ratio. Behavioral Ecology Orlando: Academic Press. Vepsa¨la¨inen, K.
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