Abstract:
:Phylogenetics explores the continuum of shallower to deeper genetic divergences between taxa. Along this continuum increasing lengths of DNA sequence can be used to answer deeper and deeper questions about biological relationships. We use shorter, and then longer mitochondrial DNA sequences to address two aspects of pigeon evolution. Firstly, we examine the phylogenetic relationships of the eight genera within the South Pacific Ducula-Ptilinopus radiation, and examine how this radiation fits into pigeons generally. Within Ducula, taxa are closely related, whereas Ptilinopus is very diverse, and paraphyletic. One third of all pigeon species are within the Ducula-Ptilinopus radiation, however all are very similar ecologically. Secondly, we study the deeper phylogenetic question regarding the relationship of pigeons to other birds. To this end, we report the complete mitochondrial genome of Hemiphaganovaeseelandiae, a member of the Ducula-Ptilinopus radiation. We use this mitochondrial genome, along with additional sandgrouse (Pterocles namaqua) mitochondrial genes to assess various candidates for the closest relative of pigeons. Of parrots, shorebirds, and sandgrouse, we find highest support for the sandgrouse-pigeon grouping. Furthermore in these analyses the pigeon and sandgrouse group closer to the falcons than any other included taxon. The finding that pigeons and sandgrouse may be more closely related to falcons than to previous candidates such as shorebirds or parrots invites further investigation.
journal_name
Mol Phylogenet Evoljournal_title
Molecular phylogenetics and evolutionauthors
Gibb GC,Penny Ddoi
10.1016/j.ympev.2010.04.016subject
Has Abstractpub_date
2010-08-01 00:00:00pages
698-706issue
2eissn
1055-7903issn
1095-9513pii
S1055-7903(10)00170-3journal_volume
56pub_type
杂志文章abstract::We sequenced 2800+ bp of the RAG-1 exon for representatives of all the currently recognized genera in the avian family Falconidae. A phylogenetic analysis of these data was compared to prior analyses of mitochondrial (cytochrome-b) and morphological (syringeal) data. The nuclear RAG-1 sequences produced results that w...
journal_title:Molecular phylogenetics and evolution
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journal_title:Molecular phylogenetics and evolution
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