Ejaculate size varies with socio‐sexual situation in an insect

Nonparametric statistics for the behavioral sciences

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Laboratory manual for the examination of human semen and semen-cervical mucus interaction.

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Ejaculate Cost and Male Choice

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Sperm competition games: raffles and roles

1990 • 668 citations

Why are there so many tiny sperm? Sperm competition and the maintenance of two sexes

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Sexual Selection and Its Component Parts, Somatic and Genital Selection, as Illustrated by Man and the Great Apes

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Ejaculate quality, testes size and sperm competition in primates

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Statistics Using Ranks: A Unified Approach.

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Sexual Selection and Nuptial Feeding Behavior in Bittacus apicalis (Insecta: Mecoptera)

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Mass and production rate of ejaculates in relation to monandry/polyandry in butterflies

1989 • 257 citations

Eunuchs: The Role of Apyrene Sperm in Lepidoptera?

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THE EFFECT OF RATIOS AND NUMBERS OF SPERMATOZOA MIXED FROM TWO MALES ON PROPORTIONS OF OFFSPRING

1974 • 207 citations

Analysing sperm competition data: simple models for predicting mechanisms

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Sperm competition as a mechanism of female choice in the field cricket, Gryllus bimaculatus

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Sources of Intraspecific Variation in Sperm Precedence in Red Flour Beetles

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Number of sperm in human ejaculates varies in accordance with sperm competition theory

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‘Kamikaze’ sperm in mammals?

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Number of sperm in human ejaculates varies in accordance with sperm competition theory (1989)

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Sexual Selection and Insect Sperm

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Sperm Precedence in the Fertilization of Eggs in Tribolium Castaneum1

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Prolonged copulation as a post-insemination guarding tactic in a natural population of the ragwort seed bug

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Juvenile territoriality in stickleback Gasterosteus aculeatus L.

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Variation in Rat Ejaculates Consistent with the Kamikaze-Sperm Hypothesis

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Elaboration of the Kamikaze Sperm Hypothesis: a reply to Harcourt

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Bioassay, Preliminary Purification, and Effect of Age, Crowding, and Mating on the Release of Sex Pheromone by Female Tenebrio molitor1

1969 • 39 citations

Quantity of the male ejaculate influenced by female unreceptivity in the fly, Culicoides melleus

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THE SPERMATHECA IN THE FLOUR BEETLE (TRIBOLIUM CASTANEUM HERBST)1

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Opportunity for non-random mating and components of offspring fitness in the flour beetle, Tribolium confusum

1990 • 4 citations