نتایج جستجو برای: mating behavior
تعداد نتایج: 639594 فیلتر نتایج به سال:
objectives: the purpose of current study was to determine the effect of phaleria macrocarpa (p. macrocarpa)fruits aqueous extract on reproductive performance of adult male rats by assessing the serum testosterone level and evaluating their libido behavior. methods and materials: eighteen male adult spraque dawley rats were divided into three groups and designated as treatment (240 mg/kg p. macr...
Wolbachia bacteria are transmitted from mother to offspring via the cytoplasm of the egg. When mated to males infected with Wolbachia bacteria, uninfected females produce unviable offspring, a phenomenon called cytoplasmic incompatibility (CI). Current theory predicts that 'sterilization' of uninfected females by infected males confers a fitness advantage to Wolbachia in infected females. When ...
—Males of monogamous species are expected to increase their overall fitness by engaging in extrapair copulations, but the fitness implications of this behavior for females are somewhat less clear. Numerous studies have examined the potential benefits of extrapair mating to females, but the costs of extrapair mating, which may be substantial, are less well studied. Quantifying these costs is cri...
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