Mitogenomics of the Speartooth Shark challenges ten years of control region sequencing.

ABSTRACT:

Background

Mitochondrial DNA markers have long been used to identify population boundaries and are now a standard tool in conservation biology. In elasmobranchs, evolutionary rates of mitochondrial genes are low and variation between distinct populations can be hard to detect with commonly used control region sequencing or other single gene approaches. In this study we sequenced the whole mitogenome of 93 Critically Endangered Speartooth Shark Glyphis glyphis from the last three river drainages they inhabit in northern Australia.

Results

Genetic diversity was extremely low (π =0.00019) but sufficient to demonstrate the existence of barriers to gene flow among river drainages (AMOVA Φ ST =0.28283, P <0.00001). Surprisingly, the comparison with single gene sub-datasets reveale

SUBMITTER: Feutry P 

PROVIDER: S-EPMC4245800 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature