Male body size affects female lifetime reproductive success in a seed beetle
Article Abstract:
The size of the male seed beetle's ejaculation, which correlates with body size, is probably the male's major contribution to the size and fecundity of eggs. Three other hypotheses are proposed: large males mate more often because they are aggressive and have a longer life span, females may increase their output after mating with a larger male or the size of male can be influenced by hormones introduced into the males, that may affect the stimulation of egg laying and egg size but are not incorporated into the eggs.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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Sexual selection and the fitness consequences of male body size in the seed beetle Stator limbatius
Article Abstract:
Fecundity in the seed beetle, Stator limbatius, is dependent on the size of both males and females. Larger males have a larger volume of ejaculate and has a more significant weight loss after mating than do smaller males. Females choose the larger male when presented with a number of possible sexual partners. Further, secondary mating tend to be sooner among females that mated smaller males or non-virgin males. The implications of these findings are discussed.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1998
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Genetic variation in paternal investment in a seed beetle
Article Abstract:
A study was conducted on the seed beetle Callosobruchus maculatus to investigate the genetic variation in male ejaculate size. Results show that the ejaculate size of the C. maculatus offspring is influenced by maternal effects rather than paternal effects, indicating that at least some of the loci influencing the ejaculate size are expressed in the X-chromosomes. Moreover, copulation duration is regulated by the female.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1998
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