期刊
MOLECULAR PHYLOGENETICS AND EVOLUTION
卷 48, 期 3, 页码 1178-1188出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ympev.2008.05.006
关键词
Pectinidae; systematics; molecular phylogeny; 16S rRNA; 12S rRNA; Histone H3; scallops
资金
- United States National Science Foundation [DEB-0614153]
- Program for Women in Science and Engineering
- Iowa State University
Evolutionary relationships of the Pectinidae were examined using two mitochondrial genes (12S rRNA, 16S rRNA) and one nuclear gene (Histone H3) for 46 species. Outgroup taxa from Propeamussidae, Spondylidae and Limidae were also sequenced to examine the impact of outgroup choice on pectinid topologies. Our phylogenetic analyses resolved the Pectinidae as monophyletic, but many of the subfamilies and tribes within the family do not form monophyletic clades. The paraphyletic Aequipectinini group is the most basal member of the Pectinidae, with the Chlamydinae and Palliolinae representing the most recently derived pectinid groups. These results are in contrast with the current morphological hypothesis of Pectinidae evolution, which suggests the Chlamydinae and Pallioline are basal groups within the Pectinidae. Ingroup topology was found to be sensitive to outgroup choice and increasing taxon sampling within the Pectinidae resulted in more robust phylogenies. (C) 2008 Elsevier Inc. All rights reserved.
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