Concordance of genetic and fin photo identification in the great white shark, Carcharodon carcharias, off Mossel Bay, South Africa |
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| Authors: | Chrysoula Gubili Ryan Johnson Enrico Gennari W Hermann Oosthuizen Deon Kotze Mike Me?er David W Sims Catherine S Jones and Leslie Robert Noble |
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| Institution: | (1) Institute of Biological and Environmental Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen, AB24 2TZ, Scotland, UK;(2) The Laboratory, Marine Biological Association of the United Kingdom, Citadel Hill, Plymouth, Devon, PL1 2PB, UK;(3) Department of Zoology and Entomology, Mammal Research Institute, University of Pretoria, Pretoria, 0002, South Africa;(4) Oceans Research, 92 Montague St, Mossel Bay, 6500, South Africa;(5) Department of Environmental Affairs and Tourism, Branch Marine and Coastal Management, Private Bag 2, Roggebaai, South Africa;(6) Marine Biology and Ecology Research Group, School of Biological Sciences, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK; |
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| Abstract: | Visual identification of naturally acquired marks has been a popular if subjective method of animal identification and population
estimation over the last 40 years. Molecular genetics has also independently developed objective individual marking techniques
during the same period. Here, we assess the concordance of individual great white shark (Carcharodon carharias) dorsal fin recognition and identification, using seven microsatellite loci as the independent unbiased arbiter, over a period
of 5 years. As a monitoring technique, fin photographs offer a very good individual identification key for white sharks over
a relatively short period of time (5 years), matching with genetic data in about 85% of cases, whilst caution and a continuously
updated database is required for animal recognition over a longer period. |
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