Copulatory behaviour and differential reproduction of laboratory rats in a two-male, one-female competitive situation

Dewsbury, Donald A.; Hartung, Thomas G.

doi:10.1016/s0003-3472(80)80012-1

Cited by 73 publications

(30 citation statements)

References 12 publications

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“…Amongst laboratory rats the number, timing and order of ejaculations by multiple males mating with an oestrous female influence the outcome of sperm competition and thereby affect the probability of paternity (Dewsbury and Hartung 1980;McClintock 1984). There is evidence that this competition between males mating multiply with a female can be influenced by their movement patterns (Schwagmeyer and Parker 1987) and dominance (Sherman 1989).…”

Section: Introductionmentioning

confidence: 99%

Dynamics of space use and male vigour amongst wood mice, Apodemus sylvaticus, in the cereal ecosystem

Tew

Macdonald

1994

Behav Ecol Sociobiol

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Abstract. The spatial organisation of male and female wood mice, Apodemus sylvaticus, was investigated in a large-scale radio-tracking study on arable farmland near Oxford, United Kingdom, during the breeding season. Both sexes had significantly larger home ranges in the breeding season than at other times, and the breeding season home ranges of male (X = 1.44 ha) were significantly larger than those of females (X = 0.49 ha). Home range overlap was significantly greater between males, and between males and females, than it was between females. Overlap between males tended to be greatest in heavily utilised areas. Except during sexual consortship, there was minimal evidence of dynamic interaction among individuals. Home range sizes of breeding males varied widely, as did their body weights. There was no relationship between male body weight and home range size or any other movement parameter. However, males with the largest home ranges had the highest scores on all other movement parameters, indicating that they expended more energy in movement. These more 'vigorous' males had access to the home ranges of more females than did males with small home ranges.

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Section: Introductionmentioning

confidence: 99%

Dynamics of space use and male vigour amongst wood mice, Apodemus sylvaticus, in the cereal ecosystem

Tew

Macdonald

1994

Behav Ecol Sociobiol

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“…LongEvans males father more offspring than F344 behavior suggested that a similar comparison of mother-infant interaction in two strains of rats, males during overnight matings of two males with the same female (Dewsbury & Hartung, 1980;Long-Evans and Fischer 344 (F344), would be of interest. In comparison with several other strains Moore & Wong, 1992) or under controlled conditions where each male is allowed only one ejaculaincluding Long-Evans, F344 rats regulate their water and salt intake and metabolism in an unusual tion (Moore & Wong, 1992).…”

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confidence: 99%

Mother-infant interactions in two strains of rats: Implications for dissociating mechanism and function of a maternal pattern

et al. 1997

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“…It may therefore still be advantageous for the male to attempt to mate with females who have already been inseminated because these sperms are all collected at the entrance to the spermatheca (Wilson, 1975). Similar phenomena occur in viviparous fish and in rats too (Warner & Harlow, 1982;Dewsbury & Hartung, 1980). For instance male damselflies of the species Cnlopreryx inactdata have a penis with two lateral horns at the end which seem to be for scraping off the sperm deposited by previous males before leaving their own (Waage, 1979).…”

Section: Spekhl Competitionmentioning

confidence: 85%

Comparative ethology of reproductive strategies in animals

Csermely

1984

Bolletino di zoologia

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I n species with sexual reproduction, one sex, more often female, initially contributes greater parental investment, since she produces gametes that are fewer in number but bigger in size. This leads to intrasexual competition among individuals of tbe opposite sex to achieve . reproduction. The rise of polygamic reproductive systems is a direct consequence of sexual selection, as Darwin has already stated. During evolution, polygamy appeared before monogamy. The latter probably evolved as an adaptation to harsh habitats, where survival was possible only for two individuals who cooperated during the reproductive period.Monogamy also developed strategies for the fertilization of already mated ,females by unmated males. As a consequence, various anatomical and behavioural adaptations in defense of monogamy evolved, e.g. prolonged copulations, partner surveillance, sperm competition.Parental care is another adaptation which arose to defend "fitness" Parental care has several forms, depending on the type of mating system used by each species. A particular position is held by helpers at the nest. These, as foreseen by the theory of kin selection, are generally relatives of the reproductive couple. Nevertheless, the presence of helpers not genetically linked, suggests the existence of reciprocal altruism. From our present knowledge, the hypothesis is put forward that helping also originated through individual selection. ACKNOWLEDGEhlENTS

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Copulatory behaviour and differential reproduction of laboratory rats in a two-male, one-female competitive situation

Cited by 73 publications

References 12 publications

Dynamics of space use and male vigour amongst wood mice, Apodemus sylvaticus, in the cereal ecosystem

Dynamics of space use and male vigour amongst wood mice, Apodemus sylvaticus, in the cereal ecosystem

Mother-infant interactions in two strains of rats: Implications for dissociating mechanism and function of a maternal pattern

Comparative ethology of reproductive strategies in animals

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