基于线粒体DNA序列的海雀科（海雀亚科）系统发育与进化
Phylogeny and evolution of the auks (subfamily Alcinae) based on mitochondrial DNA sequences.
作者信息
Moum T, Johansen S, Erikstad K E, Piatt J F
机构信息
Department of Biochemistry, University of Tromsø, Norway.
出版信息
Proc Natl Acad Sci U S A. 1994 Aug 16;91(17):7912-6. doi: 10.1073/pnas.91.17.7912.
The genetic divergence and phylogeny of the auks was assessed by mitochondrial DNA sequence comparisons in a study using 19 of the 22 auk species and two outgroup representatives. We compared more than 500 nucleotides from each of two mitochondrial genes encoding 12S rRNA and the NADH dehydrogenase subunit 6. Divergence times were estimated from transversional substitutions. The dovekie (Alle alle) is related to the razorbill (Alca torda) and the murres (Uria spp). Furthermore, the Xantus's murrelet (Synthliboramphus hypoleucus) and the ancient (Synthliboramphus antiquus) and Japanese murrelets (Synthliboramphus wumizusume) are genetically distinct members of the same main lineage, whereas brachyramphine and synthliboramphine murrelets are not closely related. An early adaptive radiation of six main species groups of auks seems to trace back to Middle Miocene. Later speciation probably involved ecological differentiations and geographical isolations.
在一项研究中，通过线粒体DNA序列比较评估了海雀的遗传分化和系统发育，该研究使用了22种海雀中的19种以及两个外群代表。我们比较了编码12S rRNA和NADH脱氢酶亚基6的两个线粒体基因中每个基因的500多个核苷酸。分歧时间是根据颠换替代估计的。小海雀（Alle alle）与刀嘴海雀（Alca torda）和厚嘴海鸦（Uria spp）有关。此外，桑氏小嘴鸻（Synthliboramphus hypoleucus）、白腰叉尾海燕（Synthliboramphus antiquus）和日本叉尾海燕（Synthliboramphus wumizusume）是同一主要谱系中基因上不同的成员，而brachyramphine和synthliboramphine小嘴鸻亲缘关系并不密切。海雀的六个主要物种组的早期适应性辐射似乎可追溯到中新世中期。后来的物种形成可能涉及生态分化和地理隔离。
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