A Gondwanan origin of passerine birds supported by DNA sequences of the endemic New Zealand wrens
A Gondwanan origin of passerine birds supported by DNA sequences of the endemic New Zealand wrens
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DOI：
10.1098/rspb.2001.1877
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发表时间：
2002-02-07
影响因子：
4.7
通讯作者：
Norman, JA
中科院分区：
文献类型：
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作者：
Ericson, PGP;Christidis, L;Norman, JA
动物地理学、古生物学和生化数据支持雀形目鸟类起源于南半球，而积累的分子数据表明，大多数现存的鸟类目起源于白垩纪中晚期。我们获得了主要雀形目鸟类的核c-myc和rag-1基因的DNA序列数据，在这里我们证明了地方性的新西兰燕鸥是现存所有其他雀形目鸟类的姊妹分类群，支持雀形目鸟类的冈德旺起源和早期辐射。我们提出：(I)棘鸟是在新西兰从冈瓦那(约82-85Myr前)分离时分离出来的，(Ii)亚种是从居住在冈瓦那西部的祖先谱系中分离出来的，(Iii)鸣鸟的祖先随后是由于澳大利亚与南极洲的分离而分离出来的。后来雀类向北半球的扩散反映了这些前冈德瓦人向北迁徙。
Zoogeographic, palaeontological and biochemical data support a Southern Hemisphere origin for passerine birds, while accumulating molecular data suggest that most extant avian orders originated in the mid-late Cretaceous. We obtained DNA sequence data from the nuclear c-myc and RAG-1 genes of the major passerine groups and here we demonstrate that the endemic New Zealand wrens (Acanthisittidae) are the sister taxon to all other extant passerines, supporting a Gondwanan origin and early radiation of passerines. We propose that (i) the acanthisittids were isolated when New Zealand separated from Gondwana (ca. 82-85 Myr ago), (ii) suboscines, in turn, were derived from an ancestral lineage that inhabited western Gondwana, and (iii) the ancestors of the oscines (songbirds) were subsequently isolated by the separation of Australia from Antarctica. The later spread of passerines into the Northern Hemisphere reflects the northward migration of these former Gondwanan elements.