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Sexually antagonistic selection generates intralocus sexual conflict, an evolutionary tug-of-war between males and females over optimal trait values [1-4]. Although the potential for this conflict is universal, the evolutionary importance of intralocus conflict is controversial because conflicts are typically thought to be resolvable through the evolution(More)
Males and females frequently have different fitness optima for shared traits, and as a result, genotypes that are high fitness as males are low fitness as females, and vice versa. When this occurs, biasing of offspring sex-ratio to reduce the production of the lower-fitness sex would be advantageous, so that for example, broods produced by high-fitness(More)
198 Phenology drives mutualistic network structure and diversity Francisco Encinas-Viso, Tomás A. Revilla & Rampal S. Etienne 209 Directional biases and resource-dependence in dispersal generate spatial patterning in a consumer–producer model 218 Dispersal-mediated trophic interactions can generate apparent patterns of dispersal limitation in aquatic(More)
Female multiple mating, which is common in animals, may have evolved not in response to fitness advantages to females but as a genetic corollary to selection on males to mate frequently. This nonadaptive hypothesis assumes a genetic correlation between females and males in mating frequency, which has received a few empirical investigations. We tested this(More)
Males typically gain fitness from multiple mating, whereas females often lose fitness from numerous mating, potentially leading to sexual conflict over mating. This conflict is expected to favour the evolution of female resistance to mating. However, females may incur male harassment if they refuse to copulate; thus, greater female resistance may increase(More)
The body sizes of individuals of the choosing and chosen sexes in a mate choice may affect sequential mating of females. We examined the effects of the body sizes of females and their mates on attributes of female first mating, and the effects of body sizes of females and their previous and potential future mates on female remating in the adzuki bean(More)
3alpha, 7alpha-Dihydroxy-5beta-cholan-24-oic acid in acetic acid was treated with concentrated hydrochloric acid at room temperature. Two of the dehydration products thus obtained proved to correspond to the beta- and gamma-acids reported (5). One (gamma-acid) of these was identified as 3alpha-hydroxy-5beta, 14beta-chol-8-en-24-oic acid (IIa) by means of(More)
The conventional methods of gas liquid chromatography or mass spectrometry failed to be useful for the identification of the biliary 3beta,7alpha-dihydroxychol-5-en-24-oic acid, a key intermediate of chenodeoxycholic acid biogenesis. It has been preliminarily reported that this acid in human bile was successfully identified by gas chromatography-mass(More)
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