Patterns of sex ratio, virginity and developmental mortality in gregarious parasitoids
نویسندگان
چکیده
منابع مشابه
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Sex allocation strategies in response to conspecifics’ offspring sex ratio in solitary parasitoids
Parasitoid females adjust their offspring sex ratio in order to maximize their fitness. The optimal sex ratio they produce varies with several factors but especially with competition level. In solitary species, only one adult can emerge from a given host, whatever the number of eggs laid. In some species, the mortality of supernumerary individuals could be due to larval combats. This ability to...
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1. Given sexual size dimorphism, differential mortality owing to body size can lead to sex-biased mortality, proximately biasing sex ratios. This mechanism may apply to mountain pine beetles, Dendroctonus ponderosae Hopkins, which typically have female-biased adult populations (2 : 1) with females larger than males. Smaller males could be more susceptible to stresses than larger females as deve...
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ژورنال
عنوان ژورنال: Biological Journal of the Linnean Society
سال: 1998
ISSN: 0024-4066
DOI: 10.1111/j.1095-8312.1998.tb01543.x