Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates

Engqvist L, Reinhold K (2007)
Proceedings of the Royal Society B 274(1607): 209-217.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Sperm competition theory predicts that when males are certain of sperm competition, they should decrease sperm investment in matings with an increasing number of competing ejaculates. How males should allocate sperm when competing with differently sized ejaculates, however, has not yet been examined. Here, we report the outcomes of two models assuming variation in males' sperm reserves and males being faced with different amounts of competing sperm. In the first 'spawning model', two males compete instantaneously and both are able to assess the sperm competitive ability of each other. In the second 'sperm storage model', males are sequentially confronted with situations involving different levels of sperm competition, for instance different amounts of sperm already stored by the female mating partner. In both of the models, we found that optimal sperm allocation will strongly depend on the size of the male's sperm reserve. Males should always invest maximally in competition with other males that are equally strong competitors. That is, for males with small sperm reserves, our model predicts a negative correlation between sperm allocation and sperm competition intensity, whereas for males with large sperm reserves, this correlation is predicted to be positive.
Stichworte
genetic algorithm; ejaculate size; sperm competition; sexual selection; sneaker; strategic sperm allocation; intensity
Erscheinungsjahr
2007
Zeitschriftentitel
Proceedings of the Royal Society B
Band
274
Ausgabe
1607
Seite(n)
209-217
ISSN
0962-8452
eISSN
1471-2954
Page URI
https://pub.uni-bielefeld.de/record/1596548

Zitieren

Engqvist L, Reinhold K. Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates. Proceedings of the Royal Society B. 2007;274(1607):209-217.
Engqvist, L., & Reinhold, K. (2007). Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates. Proceedings of the Royal Society B, 274(1607), 209-217. doi:10.1098/rspb.2006.3722
Engqvist, L., and Reinhold, K. (2007). Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates. Proceedings of the Royal Society B 274, 209-217.
Engqvist, L., & Reinhold, K., 2007. Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates. Proceedings of the Royal Society B, 274(1607), p 209-217.
L. Engqvist and K. Reinhold, “Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates”, Proceedings of the Royal Society B, vol. 274, 2007, pp. 209-217.
Engqvist, L., Reinhold, K.: Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates. Proceedings of the Royal Society B. 274, 209-217 (2007).
Engqvist, Leif, and Reinhold, Klaus. “Sperm competition games: optimal sperm allocation in response to the size of competing ejaculates”. Proceedings of the Royal Society B 274.1607 (2007): 209-217.
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2019-09-06T08:48:02Z
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