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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >An Overlooked Pink Species Of Land Iguana In The Galapagos
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An Overlooked Pink Species Of Land Iguana In The Galapagos

机译:加拉帕戈斯群岛的鬣蜥被忽视的粉红色物种

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Despite the attention given to them, the Galapagos have not yet finished offering evolutionary novelties. When Darwin visited the Galapagos, he observed both marine (Amblyrhynchus) and land (Conolophus) iguanas but did not encounter a rare pink black striped land iguana (herein referred to as "rosada," meaning "pink" in Spanish), which, surprisingly, remained unseen until 1986. Here, we show that substantial genetic isolation exists between the rosada and syntopic yellow forms and that the rosada is basal to extant taxonomically recognized Galapagos land iguanas. The rosada, whose present distribution is a conundrum, is a relict lineage whose origin dates back to a period when at least some of the present-day islands had not yet formed. So far, this species is the only evidence of ancient diversification along the Galapagos land iguana lineage and documents one of the oldest events of divergence ever recorded in the Galapagos. Conservation efforts are needed to prevent this form, identified by us as a good species, from extinction.
机译:尽管给予了他们关注,但加拉帕戈斯群岛尚未完成提供进化上的新颖性的工作。当达尔文访问加拉帕戈斯群岛时,他观察到了海洋鬣蜥和陆生鬣蜥,但没有遇到稀有的粉红色黑色条纹鬣蜥(在西班牙称为“ rosada”,意为“粉红色”),这令人惊讶地,直到1986年才出现。在这里,我们表明rosada和同形黄色形式之间存在实质的遗传隔离,并且rosada是现有的分类学上公认的加拉帕戈斯鬣蜥的基础。 rosada(其目前的分布是一个难题)是一种遗迹血统,其起源可以追溯到至少当今一些岛屿尚未形成的时期。到目前为止,该物种是加拉帕戈斯群岛鬣蜥沿袭古生物多样化的唯一证据,并记录了加拉帕戈斯群岛有史以来最古老的物种分化事件之一。需要进行保护工作以防止这种被我们认定为好物种的物种灭绝。

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