文章基本信息

标题：Life history variation in recently established populations of western mosquitofish (Gambusia affinis)
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作者：Stockwell, Craig A. ; Vinyard, Gary L.
期刊名称：Western North American Naturalist
印刷版ISSN：1527-0904
出版年度：2000
卷号：60
期号：3
页码：4
出版社：Brigham Young University
摘要：We report life history characteristics for 4 recently established populations of western mosquitofish (Gambusia affinis). Mosquitofish from thermally stable habitats, Bonham and Garrett, were characterized by maturity at large sizes, high fat reserves, and large embryos. In contrast, females from a thermally unstable habitat, Wabuska, matured at small sizes and had low fat reserves and small embryos. Females from Parker, a site with no appreciable thermal input, matured at intermediate sizes and had low fat reserves as well as large embryos. These populations shared a common ancestor in 1937; therefore, these results suggest either phenotypic plasticity or rapid evolution.