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Molecular phylogenetics of the Pectinidae (Mollusca : Bivalvia) and effect of increased taxon sampling and outgroup selection on tree topology
Puslednik, Louise Serb, Jeanne
Puslednik, Louise
Serb, Jeanne
Author
Abstract
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.
Keywords
Pectinidae, Systematics, Molecular phylogeny, 16S rRNA, 12S rRNA, Histone H3, Scallops
Date
2008
Type
Journal article
Journal
Book
Volume
48
Issue
3
Page Range
1178-1188
Article Number
ACU Department
School of Education
Faculty of Education and Arts
Faculty of Education and Arts
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Open Access Status
License
All rights reserved
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Controlled
Notes
© 2008 Elsevier Inc. All rights reserved.