Behavioral Aspects of Population Dynamics in Unisexual‐Bisexual Poeciliopsis (Pisces: Poeciliidae)
Behavioral Aspects of Population Dynamics in Unisexual‐Bisexual Poeciliopsis (Pisces: Poeciliidae)
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单性-双性 Poeciliopsis 种群动态的行为方面（双鱼座：Poeciliidae）
DOI：
10.2307/1936025
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发表时间：
1971
期刊：
影响因子：
4.8
通讯作者：
Francis Mckay
中科院分区：
文献类型：
--
作者：
Francis Mckay
单性形态的青冈需要雌雄同体的雄性的精子。选择的压力决定了雄性会歧视双性恋动物，直到后者灭绝。大多数单性-双性恋的Poeciliopsis种群中，单性-双性恋的雌性比例更倾向于单性，这表明雄性对同性交配的选择要么没有起作用，要么没有持续足够的时间，要么被未知因素破坏了。在配偶选择和授精测试中，单雄表现出对同种雌性的绝对偏好，但雄性之间的社会互动导致单性授精。在自然种群中，配偶选择减少了单性繁殖能力，但全雌性形式获得了足够的精子来维持自己。请参阅JSTOR的全文文章
Unisexual forms of Poeciliopsis require sperm from males of gonochoristic species. Selection pressures dictate that males discriminate against unisexuals until the latter become extinct. Most Poeciliopsis unisexual—bisexual populations have a unisexual—bisexual female ratio that favors unisexuals, indicating that selection for conspecific mating by males has either not been operative, not persisted for a sufficient period of time, or been disrupted by unknown factors. In mate selection and insemination tests single males show almost absolute preference for conspecific females, but social interactions among males result in unisexual inseminations. Mate selection reduces unisexual fecundity in natural populations, but the all—female forms receive sufficient sperm to sustain themselves. See full-text article at JSTOR