Whole Mitogenome Sequencing Refines Population Structure of the Critically Endangered Sawfish Pristis Pristis
Vol. 533: 237–244, 2015 MARINE ECOLOGY PROGRESS SERIES Published August 6 doi: 10.3354/meps11354 Mar Ecol Prog Ser OPENPEN ACCESSCCESS Whole mitogenome sequencing refines population structure of the Critically Endangered sawfish Pristis pristis Pierre Feutry1,7,*, Peter M. Kyne1, Richard D. Pillans2, Xiao Chen3, James R. Marthick4, David L. Morgan5, Peter M. Grewe6 1Research Institute for the Environment and Livelihoods, Charles Darwin University, Ellengowan Drive, Darwin 0909, Northern Territory, Australia 2CSIRO Oceans and Atmosphere Flagship, 41 Boggo Road, Dutton Park 4102, Queensland, Australia 3Guangxi Mangrove Research Center, Guangxi Academy of Sciences, Beihai 536000, PR China 4Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart 7000, Tasmania, Australia 5Freshwater Fish Group & Fish Health Unit, Centre for Fish & Fisheries Research, School of Veterinary & Life Sciences, Murdoch University, South Street, Murdoch 6150, Western Australia, Australia 6CSIRO Oceans and Atmosphere Flagship, Castray Esplanade, Hobart 7000, Tasmania, Australia 7Present address: CSIRO Oceans and Atmosphere Flagship, Castray Esplanade, Hobart 7000, Tasmania, Australia ABSTRACT: The largetooth sawfish Pristis pristis (Linnaeus, 1758) is a highly threatened euryha- line elasmobranch that in recent times has undergone a significant range contraction. It now only remains in a few areas, with northern Australia being the main stronghold. Previous work using a single mitochondrial gene approach suggested the existence of regional barriers to gene flow in northern Australia. In this study, whole mitochondrial sequences of 92 P. pristis from 7 river drainages across northern Australia were used to refine the population structure. This approach revealed barriers to gene flow at a scale as fine as between adjacent river drainages.
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