Journal
MITOCHONDRIAL DNA PART A
Volume 27, Issue 5, Pages 3699-3700Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/19401736.2015.1079863
Keywords
Evolutionary relationships; Galapagos archipelago; Iguanidae; Islands; phylogenetics
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Funding
- Swiss Friends of the Galapagos Islands
- Alexander von Humboldt Foundation
- EMBO
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The Galapagos iguanas are among the oldest vertebrate lineages on the Galapagos archipelago, and the evolutionary history of this clade is of great interest to biologists. We describe here the complete mitochondrial genomes of the marine iguana, Amblyrhynchus cristatus (Genbank accession number: KT277937) and the land iguana Conolophus subcristatus (Genbank accession number: KT277936). The genomes contain 13 protein-coding genes, 22 transfer RNAs, and two ribosomal RNAs genes, as well as a control region (CR). Both species have an identical gene order, which matches that of Iguana iguana. The CR of both Galapagos iguanas features similar tandem repeats units, which are absent in I. iguana. We present a phylogeny of the Iguanidae based on complete mitochondrial genomes, which confirms the sister-group relationship of Galapagos iguanas. These new mitochondrial genomes constitute an important data source for future exploration of the phylogenetic relationships and evolutionary history of the Galapagos iguanas.
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