The extent of population genetic subdivision differs among four co-distributed shark species in the Indo-Australian archipelago |
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Authors: | Jenny R Ovenden Tom Kashiwagi Damien Broderick Jenny Giles John Salini |
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Institution: | (1) Molecular Fisheries Laboratory, Department of Primary Industries and Fisheries, Queensland Government, PO Box 6097, St Lucia, Queensland, 4067, Australia;(2) School of Biomedical Sciences, University of Queensland, Queensland, 4072, Australia;(3) School of Integrative Biology, University of Queensland, Queensland, 4072, Australia;(4) CSIRO Marine Research, PO Box 120, Cleveland, Queensland, 4163, Australia |
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Abstract: | Background The territorial fishing zones of Australia and Indonesia are contiguous to the north of Australia in the Timor and Arafura
Seas and in the Indian Ocean to the north of Christmas Island. The area surrounding the shared boundary consists of a variety
of bio-diverse marine habitats including shallow continental shelf waters, oceanic trenches and numerous offshore islands.
Both countries exploit a variety of fisheries species, including whaler (Carcharhinus spp.) and hammerhead sharks (Sphyrna spp.). Despite their differences in social and financial arrangements, the two countries are motivated to develop complementary
co-management practices to achieve resource sustainability. An essential starting point is knowledge of the degree of population
subdivision, and hence fisheries stock status, in exploited species. |
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