TY  - JOUR
AB  - 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.
DA  - 2006
DO  - 10.1111/j.1420-9101.2006.01134.x
KW  - genetic algorithm
KW  - ejaculate size
KW  - sperm precedence
KW  - evolutionary stable strategy
KW  - allocation
KW  - sperm competition
KW  - female
KW  - strategic sperm
KW  - mating frequency
LA  - eng
IS  - 5
M2  - 1448
PY  - 2006
SN  - 1010-061X
SP  - 1448-1458
T2  - JOURNAL OF EVOLUTIONARY BIOLOGY
TI  - Theoretical influence of female mating status and remating propensity on male sperm allocation patterns
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-15982876
Y2  - 2024-11-22T05:23:33
ER  -