Social cues of sperm competition influence accessory reproductive gland size in a promiscuous mammal

Lemaitre J-F, Ramm SA, Hurst JL, Stockley P (2011)
Proceedings of The Royal Society B Biological Sciences 278(1709): 1171-1176.

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Abstract
Theory predicts that males should increase overall investment in ejaculate expenditure with increasing levels of sperm competition. Since ejaculate production is costly, we may expect males to tailor their reproductive investment according to anticipated levels of sperm competition. Here, we investigate plasticity in ejaculate investment in response to cues of population average levels of sperm competition in a promiscuous mammal, the bank vole (Myodes glareolus). We manipulated the social experience of experimental subjects during sexual development via differential exposure to the odour of rival males, to simulate conditions associated with relatively high or low average levels of sperm competition. Males exposed to a high level of competition developed larger major accessory reproductive glands (seminal vesicles) than those that experienced a low level of competition, suggesting that an increased investment in the production of copulatory plugs and/or mating rate may be beneficial at relatively high sperm competition levels. However, investment in sperm production, testis size and sperm motility were not altered according to social experience. Our findings emphasize the importance of non-sperm components of the ejaculate in mammalian postcopulatory sexual selection, and add to the growing evidence linking plasticity in reproductive traits to social cues of sperm competition.
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Lemaitre J-F, Ramm SA, Hurst JL, Stockley P. Social cues of sperm competition influence accessory reproductive gland size in a promiscuous mammal. Proceedings of The Royal Society B Biological Sciences. 2011;278(1709):1171-1176.
Lemaitre, J. - F., Ramm, S. A., Hurst, J. L., & Stockley, P. (2011). Social cues of sperm competition influence accessory reproductive gland size in a promiscuous mammal. Proceedings of The Royal Society B Biological Sciences, 278(1709), 1171-1176.
Lemaitre, J. - F., Ramm, S. A., Hurst, J. L., and Stockley, P. (2011). Social cues of sperm competition influence accessory reproductive gland size in a promiscuous mammal. Proceedings of The Royal Society B Biological Sciences 278, 1171-1176.
Lemaitre, J.-F., et al., 2011. Social cues of sperm competition influence accessory reproductive gland size in a promiscuous mammal. Proceedings of The Royal Society B Biological Sciences, 278(1709), p 1171-1176.
J.-F. Lemaitre, et al., “Social cues of sperm competition influence accessory reproductive gland size in a promiscuous mammal”, Proceedings of The Royal Society B Biological Sciences, vol. 278, 2011, pp. 1171-1176.
Lemaitre, J.-F., Ramm, S.A., Hurst, J.L., Stockley, P.: Social cues of sperm competition influence accessory reproductive gland size in a promiscuous mammal. Proceedings of The Royal Society B Biological Sciences. 278, 1171-1176 (2011).
Lemaitre, Jean-Francois, Ramm, Steven A., Hurst, Jane L., and Stockley, Paula. “Social cues of sperm competition influence accessory reproductive gland size in a promiscuous mammal”. Proceedings of The Royal Society B Biological Sciences 278.1709 (2011): 1171-1176.
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8 Citations in Europe PMC

Data provided by Europe PubMed Central.

Male-biased sex ratio does not promote increased sperm competitiveness in the seed beetle, Callosobruchus maculatus.
McNamara KB, Robinson SP, Rosa ME, Sloan NS, van Lieshout E, Simmons LW., Sci Rep 6(), 2016
PMID: 27306351
Sperm competition risk drives plasticity in seminal fluid composition.
Ramm SA, Edward DA, Claydon AJ, Hammond DE, Brownridge P, Hurst JL, Beynon RJ, Stockley P., BMC Biol. 13(), 2015
PMID: 26507392
Baculum morphology predicts reproductive success of male house mice under sexual selection.
Stockley P, Ramm SA, Sherborne AL, Thom MD, Paterson S, Hurst JL., BMC Biol. 11(), 2013
PMID: 23800051
Social regulation of male reproductive plasticity in an African cichlid fish.
Maruska KP, Fernald RD., Integr. Comp. Biol. 53(6), 2013
PMID: 23613320
Sperm wars and the evolution of male fertility.
Simmons LW, Fitzpatrick JL., Reproduction 144(5), 2012
PMID: 22984191
Mating plugs in polyandrous giants: which sex produces them, when, how and why?
Kuntner M, Gregoric M, Zhang S, Kralj-Fiser S, Li D., PLoS ONE 7(7), 2012
PMID: 22829900
Heterogenous turnover of sperm and seminal vesicle proteins in the mouse revealed by dynamic metabolic labeling.
Claydon AJ, Ramm SA, Pennington A, Hurst JL, Stockley P, Beynon R., Mol. Cell Proteomics 11(6), 2012
PMID: 22331477
It's all in your head: the role of quantity estimation in sperm competition.
Shifferman EM., Proc. Biol. Sci. 279(1730), 2012
PMID: 22171084

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