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Mitochondrial DNA
The Journal of DNA Mapping, Sequencing, and Analysis
Volume 25, 2014 - Issue 4
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Announcement

Second generation DNA sequencing of the mitogenome of the Chinstrap penguin and comparative genomics of Antarctic penguins

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Pages 271-272 | Received 21 Apr 2013, Accepted 25 Apr 2013, Published online: 24 Jun 2013
 

Abstract

The complete mitochondrial genome of the Chinstrap penguin (Pygoscelis antarcticus) was sequenced and compared with other penguin mitogenomes. The genome is 15,972 bp in length with the number and order of protein coding genes and RNAs being very similar to that of other known penguin mitogenomes. Comparative nucleotide analysis showed the Chinstrap mitogenome shares 94% homology with the mitogenome of its sister species, Pygoscelis adelie (Adélie penguin). Divergence at nonsynonymous nucleotide positions was found to be up to 23 times less than that observed in synonymous positions of protein coding genes, suggesting high selection constraints. The complete mitogenome data will be useful for genetic and evolutionary studies of penguins.

Acknowledgements

We thank Oliver Haddrath and Allan Baker (Royal Ontario Museum, Canada) for kindly providing the Chinstrap DNA.

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