Mavárez Jesús, Linares Mauricio
Centro de Ecología, Instituto Venezolano de Investigaciones Científicas, Apartado 20632, Caracas 1020-A, Venezuela.
Mol Ecol. 2008 Oct;17(19):4181-5. doi: 10.1111/j.1365-294x.2008.03898.x.
Among animals, evidence for homoploid hybrid speciation (HHS, i.e. the creation of a hybrid lineage without a change in chromosome number) was limited until recently to the virgin chub, Gila seminuda, and some controversial data in support of hybrid status for the red wolf, Canis rufus. This scarcity of evidence, together with pessimistic attitudes among zoologists about the evolutionary importance of hybridisation, prompted the view that HHS is extremely rare among animals, especially as compared with plants. However, in recent years, the literature on animal HHS has expanded to include several new putative examples in butterflies, ants, flies and fishes. We argue that this evidence suggests that HHS is far more common than previously thought and use it to provide insights into some of the genetic and ecological aspects associated with this type of speciation among animals.
在动物中，直到最近，关于同倍体杂交物种形成（HHS，即不改变染色体数量而产生杂交谱系）的证据还仅限于处女鲃（Gila seminuda）以及一些支持红狼（Canis rufus）杂交状态的有争议数据。证据的稀缺，再加上动物学家对杂交进化重要性的悲观态度，使得人们认为HHS在动物中极其罕见，尤其是与植物相比。然而，近年来，关于动物HHS的文献已有所扩展，包括蝴蝶、蚂蚁、苍蝇和鱼类中的几个新的假定例子。我们认为，这些证据表明HHS比以前认为的要普遍得多，并以此来深入了解动物中这种物种形成类型相关的一些遗传和生态方面的情况。
