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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Acknowledgments
This work was supported by Aberdeen University and the Marine Biological Association. We are grateful to two referees for valuable comments and Linda Sönderberg for her help in the laboratory. This work complies with the current laws of the United Kingdom.
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Communicated by T. Reusch.
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Gubili, C., Johnson, R., Gennari, E. et al. Concordance of genetic and fin photo identification in the great white shark, Carcharodon carcharias, off Mossel Bay, South Africa. Mar Biol 156, 2199–2207 (2009). https://doi.org/10.1007/s00227-009-1233-y
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DOI: https://doi.org/10.1007/s00227-009-1233-y