Cook Joseph A, Lessa Enrique P
University of Alaska Museum and Institute of Arctic Biology, 907 Yukon Drive, Fairbanks, Alaska, 99775-6960.
Laboratorio de Evolución, Facultad de Ciencias, Casilla de Correos 12106, Montevideo, 11300, Uruguay.
Evolution. 1998 Oct;52(5):1521-1527. doi: 10.1111/j.1558-5646.1998.tb02035.x.
Subterranean rodents have been used frequently as examples of explosive speciation in mammals. We tested for differential rates of diversification by using information from molecular phylogenies to focus primarily on tuco-tucos (Rodentia: Octodontidae), the most speciose lineage of subterranean rodents. Tuco-tucos were not significantly more diverse than their sister taxon (octodontines); however, a lineages-through-time analysis suggests an increase in diversification at the base of the tuco-tuco clade.
地下啮齿动物经常被用作哺乳动物爆发式物种形成的例子。我们利用分子系统发育信息来主要关注土豚鼠（啮齿目：八齿鼠科），这是地下啮齿动物中物种最丰富的谱系，以此来测试多样化的差异速率。土豚鼠的多样性并不比它们的姐妹分类群（八齿鼠亚科）显著更高；然而，一项时间谱系分析表明，在土豚鼠进化枝的基部多样化有所增加。
