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首页> 外文期刊>Trends in Ecology & Evolution >Speciation in nature: the threespine stickleback model systems [Review]
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Speciation in nature: the threespine stickleback model systems [Review]

机译：自然界中的物种：Threespine棘背模型系统[评论]

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摘要

The threespine stickleback Gasterosteus aculeatus species complex is an important natural model for speciation research because it includes several replicated sets of coexisting, divergent forms that are also experimentally tractable. Recent research has begun to emphasize lesser known divergences within the complex in addition to the well-studied limnetic-benthic pairs, as well as exploring a broader range of speciation mechanisms. With the goals of making general inferences about speciation in nature and bringing this body of research to a wider audience, we have surveyed studies from the entire species complex. We find that stickleback speciation is often rapid, that the geographical context of speciation is variable and often complex, and that many, diverse traits have often diverged early in the speciation process. We find no unambiguous evidence of founder-effect speciation, but much evidence that divergent natural and sexual selection have been central to the evolution of reproductive isolation in this species complex.
机译：三脊棘背背式Gasterosteus aculeatus物种复合体是物种研究的重要自然模型，因为它包括几个重复存在的并存的，发散形式的集合，这些形式在实验上也很容易处理。最近的研究已经开始着重研究复杂的边缘-底栖动物对，以及探索更广泛的物种形成机制，而不是在复杂区域内鲜为人知的分歧。为了对自然界的物种形成做出一般性推论，并将这一研究范围带给更广泛的读者，我们对整个物种群的研究进行了调查。我们发现棘背式物种形成通常是快速的，物种形成的地理环境是可变的且通常是复杂的，并且许多多样的性状在物种形成过程的早期经常发生分歧。我们没有找到明确的关于建立者效应物种的证据，但是有很多证据表明，自然选择和性选择的不同对这种物种复杂的生殖隔离的进化至关重要。

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