文章基本信息

标题：Resource Competition and Coevolution in Sticklebacks
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作者：Dolph Schluter
期刊名称：Evolution: Education and Outreach
印刷版ISSN：1936-6434
出版年度：2010
卷号：3
期号：1
页码：54-61
DOI：10.1007/s12052-009-0204-6
出版社：BioMed Central
摘要：Threespine stickleback in young postglacial lakes provide a compelling example of coevolution between species that compete for resources.Coexisting pairs of stickleback species are highly divergent in habitat, diet, and body size and shape, whereas stickleback occurring alone in lakes are intermediate.We used experiments in ponds to test mechanisms of divergence between coexisting species.The results support the hypothesis of coevolution by resource competition between stickleback, but we found evidence that interactions with natural enemies also contribute to divergence.Natural selection arising from these interactions selects against intermediate phenotypes, included hybrids, and thus has contributed to the origin and persistence of stickleback species.
关键词：Stickleback;Coevolution;Character displacement;Speciation;Natural selection