Signs of sex: what we know and how we know it.
Signs of sex: what we know and how we know it.
复制标题
性的迹象：我们所知道的以及我们如何知道它。
DOI：
10.1016/j.tree.2008.11.010
复制
发表时间：
2009
影响因子：
16.8
通讯作者：
LogsdonJr,JohnM
中科院分区：
文献类型：
--
作者：
Schurko,AndrewM;Neiman,Maurine;LogsdonJr,JohnM
有性生殖的优势表明，考虑到其相对于无性行为的巨大成本，它一定会带来深远的好处。然而，由于潜在的隐性性行为，特别是在不熟悉的生物体中，确定一个谱系是否有性行为往往是复杂的。在这里，我们考虑了各种基于分子和有机体的识别性别标志的方法的优点和缺点，并描述了它们的应用和进化生物学的相关性。我们回顾了最近使用这些方法的研究；一些分析甚至对几个“古老的”无性分类群提出了质疑，认为它们是最近衍生出来的，或者可能是暗地有性的。更广泛地说，更好地了解哪些生物有性行为以及它们如何有性行为，将加深我们对有性生殖的分布、维持和进化的理解。
The predominance of sexual reproduction indicates that it must confer profound benefits, considering its significant costs relative to asexuality. However, definitively determining whether a lineage engages in sex is often complicated by the potential for cryptic sex, especially among unfamiliar organisms. Here we consider the strengths and weaknesses of various molecular- and organismal-based approaches for recognizing signs of sex and describe their applications and relevance to evolutionary biology. We review recent studies that use these methods; some analyses even dispute several ‘ancient' asexual taxa, and suggest they are recently derived or might be covertly sexual. More broadly, a better understanding of which organisms have sex and how they do it will deepen our understanding of the distribution, maintenance and evolution of sexual reproduction.