期刊
GLOBAL ECOLOGY AND BIOGEOGRAPHY
卷 9, 期 6, 页码 517-525出版社
BLACKWELL SCIENCE LTD
DOI: 10.1046/j.1365-2699.2000.00204.x
关键词
Aplodactylus; climate change; dispersal; Goniistius; historical biogeography; marine fishes; mitochondrial DNA; Nemadactylus; vicariance
The biogeographic history of three cirrhitoid species pairs with east-west allopatric distributions across southern Australia was examined by determining levels of mitochondrial DNA sequence divergence and applying molecular clock calibrations. Similar levels of genetic divergence were observed for Aplodactylus Valenciennes and Goniistius Gill species pairs, but these were more than twice that observed for a Nemadactylus Richardson pair. Molecular clock calibrations suggested divergences occurred during the late Miocene and mid Pliocene, respectively. Given evidence of high dispersal capabilities, the habitat and climatic barriers of the Australian south coast appear too small to have facilitated speciation of the cirrhitoids examined. A mechanism is proposed by which ancestral cirrhitoids were vicariantly isolated into east and west coast populations during periods of climate change. Although Aplodactylus and Goniistius divergences occurred during the same period, separate vicariant events across the Australian north and south coasts are invoked.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据