Juan C, Oromi P, Hewitt G M
School of Biological Sciences, University of East Anglia, Norwich, U.K.
Proc Biol Sci. 1995 Aug 22;261(1361):173-80. doi: 10.1098/rspb.1995.0133.
Fifteen species of the darkling beetle genus Pimelia (Tenebrionidae: Coleoptera) have been sequenced for a 365 b.p. portion of the mitochondrial Cytochrome Oxidase I gene. Thirteen of these are endemic species inhibiting the Canarian archipelago in the Atlantic and the other two are continental conspecifics. This data set has been phylogenetically analysed by maximum parsimony and distance approaches and the resulting trees used to deduce sequential interisland colonization. This suggests patterns compatible with the geological dating of the islands, but with increasing uncertainty when older events are considered. A colonization sequence from Fuerteventura to Tenerife followed by Tenerife to Gran Canarian and La Gomera, and from the latter to La Palma and then to El Hierro is proposed for the genus. A relatively recent secondary colonization from Gran Canaria to Gomera is deduced.
已对拟步甲属（拟步甲科：鞘翅目）的15个物种的线粒体细胞色素氧化酶I基因的365个碱基对片段进行了测序。其中13个是分布于大西洋加那利群岛的特有物种，另外两个是大陆上的同种物种。已通过最大简约法和距离法对该数据集进行了系统发育分析，并利用所得树状图推断岛屿间的连续殖民化情况。这表明其模式与岛屿的地质年代测定结果相符，但在考虑更古老的事件时不确定性增加。该属的殖民化顺序被认为是从富埃特文图拉岛到特内里费岛，接着从特内里费岛到大加那利岛和戈梅拉岛，再从后者到拉帕尔马岛，然后到耶罗岛。推断出了一个相对较新的从大加那利岛到戈梅拉岛的二次殖民化情况。
