Theoretical influence of female mating status and remating propensity on male sperm allocation patterns

Engqvist L, Reinhold K (2006)
JOURNAL OF EVOLUTIONARY BIOLOGY 19(5): 1448-1458.

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Abstract
Theoretical models predict that males should allocate more sperm in matings where the immediate risk of sperm competition is high. It has therefore often been argued that males should invest less sperm in matings with virgin females compared with matings with already mated females. However, with relatively polyandrous females, high sperm competition risk will covary with high sperm competition intensity leading to more unpredictable conditions, as high competition intensity should favour smaller ejaculates. With the use of a genetic algorithm, we found that males should allocate more sperm in matings with virgin females when female mating frequency is relatively high, whereas low remating rates will select for higher effort in matings with nonvirgin females. At higher remating rates, first male sperm precedence favours larger ejaculates in matings with virgin females and second male precedence favours the reverse. These results shed some light on several findings that have been difficult to explain adaptively by the hitherto developed theory on sperm allocation.
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Engqvist L, Reinhold K. Theoretical influence of female mating status and remating propensity on male sperm allocation patterns. JOURNAL OF EVOLUTIONARY BIOLOGY. 2006;19(5):1448-1458.
Engqvist, L., & Reinhold, K. (2006). Theoretical influence of female mating status and remating propensity on male sperm allocation patterns. JOURNAL OF EVOLUTIONARY BIOLOGY, 19(5), 1448-1458.
Engqvist, L., and Reinhold, K. (2006). Theoretical influence of female mating status and remating propensity on male sperm allocation patterns. JOURNAL OF EVOLUTIONARY BIOLOGY 19, 1448-1458.
Engqvist, L., & Reinhold, K., 2006. Theoretical influence of female mating status and remating propensity on male sperm allocation patterns. JOURNAL OF EVOLUTIONARY BIOLOGY, 19(5), p 1448-1458.
L. Engqvist and K. Reinhold, “Theoretical influence of female mating status and remating propensity on male sperm allocation patterns”, JOURNAL OF EVOLUTIONARY BIOLOGY, vol. 19, 2006, pp. 1448-1458.
Engqvist, L., Reinhold, K.: Theoretical influence of female mating status and remating propensity on male sperm allocation patterns. JOURNAL OF EVOLUTIONARY BIOLOGY. 19, 1448-1458 (2006).
Engqvist, Leif, and Reinhold, Klaus. “Theoretical influence of female mating status and remating propensity on male sperm allocation patterns”. JOURNAL OF EVOLUTIONARY BIOLOGY 19.5 (2006): 1448-1458.
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