多种标记和多个个体细化了真正的海豹系统发育，并使分子生物学和形态学重新一致。
Multiple markers and multiple individuals refine true seal phylogeny and bring molecules and morphology back in line.
机构信息
Department of Biology, University of Alberta, Edmonton, Alberta, Canada.
出版信息
Proc Biol Sci. 2010 Apr 7;277(1684):1065-70. doi: 10.1098/rspb.2009.1783. Epub 2009 Nov 25.
Abstract
Despite decades of study, some aspects of Phocidae (Pinnipedia, Carnivora) phylogeny still remain unresolved. Using the largest novel dataset to date, including all extant phocids and comprising 15 nuclear and 13 mitochondrial genes, we illustrate the utility of including multiple individuals per species in resolving rapid radiations, and provide new insight into phocid phylogeny. In line with longstanding morphological views, Pusa is recovered as monophyletic for the first time with genetic data. The data are also used to explore the relationship between genetic distance and taxonomic rank. Intraspecific sampling also highlights the discrepancy between molecular and morphological rates of evolution within Phocidae.
摘要
尽管经过了几十年的研究，斑海豹科（鳍足目，食肉目）的系统发育仍有一些方面尚未解决。本研究利用迄今最大的新数据集，包括所有现存的斑海豹物种，涵盖 15 个核基因和 13 个线粒体基因，说明了在解决快速辐射问题时，包含每个物种的多个个体的重要性，并为斑海豹的系统发育提供了新的见解。与长期以来的形态学观点一致，首次使用遗传数据证明了象海豹是单系的。这些数据还被用于探索遗传距离与分类等级之间的关系。种内采样也突出了在斑海豹科内分子和形态进化率之间的差异。
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