• Publications
  • Influence
Sperm competition, male prudence and sperm-limited females
Sperm are produced in astronomical numbers compared with eggs, and there is good evidence that sperm competition is the force behind the evolution of many tiny sperm. However, sperm productionExpand
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Sperm competition games: raffles and roles
  • G. Parker
  • Biology
  • Proceedings of the Royal Society of London…
  • 22 November 1990
Evolutionary games in which two males mate with the same female are examined by using an evolutionarily stable strategy (ESS) approach. These prospective models of competitive ejaculation seek ESSExpand
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Sperm competition games: sneaks and extra-pair copulations
  • G. Parker
  • Biology
  • Proceedings of the Royal Society of London…
  • 22 November 1990
This paper examines ejaculation strategies for cases when an opportunist male ‘steals’ a mating with the female of a paired male. This is an evolutionary game of competitive ejaculation in which twoExpand
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Potential Reproductive Rates and the Operation of Sexual Selection
In most animals, members of one sex compete more intensely for mates than members of the other sex, and show a greater development of secondary sexual traits. The relative intensity of matingExpand
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Optimal Egg Size and Clutch Size: Effects of Environment and Maternal Phenotype
In this paper, we develop a series of models for predicting optimal egg size and clutch size in different environments and for different maternal phenotypes. The models investigate the interactionExpand
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Sperm competition games: individual assessment of sperm competition intensity by group spawners
A distinction is made between sperm competition risk (where there is typically a low probability of competition between two ejaculates) and sperm competition intensity (where typically two or moreExpand
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Effects of alternative male mating strategies on characteristics of sperm production in the Atlantic salmon (Salmo salar): theoretical and empirical investigations
Atlantic salmon ( Salmo salar ) males mature as either tiny precocious parr before seaward migration, or as older and larger anadromous males. Anadromous males dominate the spawning redds andExpand
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Courtship Persistence and Female-Guarding as Male Time Investment Strategies
Time investment strategy is defined as the optimum allocation of times spent on given activities so as to achieve maximum reproductive success. Selective pressures on males to increase time investedExpand
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Begging for control: when are offspring solicitation behaviours honest?
There is burgeoning interest in the idea that conspicuous begging displays, when parents are provisioning dependent young, advertise offspring need honestly to parents. Many empirical studies claimExpand
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