Global ETD Search
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Showing 1 to 7 of 7 for “"mate competition"”.
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Genetic variation in the aphid Pemphigus spyrothecae
… ratios in P. spyrothecae evolved through local mate competition. There was no evidence for a correlation between inbreeding and population density. Genetic variation was also found within galls. Of 633 aphids in one gall, 619 shared one genotype, while the remaining 14 were immigrants from at …
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Extra-pair paternity within the female-defense polygyny of the lizard, Anolis carolinensis: Evidence of alternative mating strategies
Mate competition is a prominent component of sexual selection theory. Typically, males attempt to mate with the most females possible and females attempt to mate with the highest quality males possible. In the polygynous female-defense mating system of Anolis carolinensis, males compete directly …
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Causes and consequences of sex ratio bias in Nazca boobies
… This finding has important implications for mate competition. The proportional representation of males among the adults ready to mate in a population at a given moment is a central concept in explaining variation in sex roles, the intensity of mating competition, and mate choice. Given the …
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Western Gorilla Social Structure and Inter-Group Dynamics
… groups are primarily random or due to aggressive mate competition, I find that these interactions appear to be based around a complex social structure influenced by kinship, territoriality and dominance.
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Unravelling the ecological trade-offs in behavioural and physiological sexual traits
… changes, will have direct impacts on the risk of mate competition and the opportunity for mate choice. At the same time, biotic environmental changes in the environment could have impacts on nutritional availability, and therefore the condition state of individuals.<br/><br/>In Drosophila …
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Strategies of Sexual Reproduction in Aphids
Die durchschnittliche Dauer der zweiten Kopulation von Uroleucon cirsii (L.) ist sowohl für Männchen als auch für Weibchen kürzer als die der ersten. Dies legt die Vermutung nahe, dass die männlichen Blattläusen zur Verfügung stehende Menge Sperma limitiert ist. Des weiteren wird Ejakulat von …