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Development of a key using morphological characters to distinguish south-western Indian Ocean anguillid glass eels

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Two morphological characters were examined in 4099 anguillid glass eels sampled in four south-western Indian Ocean islands, and resulting identifications were tested using genetic analysis. Distance between the origin of the dorsal and anal fins as related to total length and tail and caudal fin pigmentation enabled formulation of a useful field identification key, which was able to discriminate 4036 glass eels of the regional species Anguilla bicolor bicolor, Anguilla marmorata and Anguilla mossambica, and excluded the occurrence of Anguilla nebulosa labiata in the sample.
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Keywords: Anguilla spp; fin length; molecular analysis; morphology; pigmentation pattern; species identification

Document Type: Regular Paper

Affiliations: 1: Institut des Sciences de l’Evolution (ISEM) UMR 5554 CNRS-UMII, Université de Montpellier II, CC 065, Place E. Bataillon, 34095 Montpellier Cedex 5, France 2: UMR 5244 CNRS-EPHE-UPVD, Biologie Ecologie Tropicale et Méditerranéenne, Université de Perpignan, 52 Av. P. Alduy, 66860 Perpignan Cedex, France 3: Biologie des Organismes et Ecosystèmes Marins (BOREA) UMR 5178 BOME CNRS-MNHN-UPMC-IRD, Muséum National d’Histoire Naturelle, Ichthyologie CP 026, 57 rue Cuvier, 75231 Paris Cedex 05, France 4: Association Réunionnaise de Développement de l’Aquaculture (ARDA), Centre des Eaux Douces, Les Sables, B.P. 16, 97427 Etang-Salé, Ile de La Réunion, France 5: Biologie des Organismes et Ecosystèmes Marins (BOREA) UMR 5178 BOME CNRS-MNHN-UPMC-IRD, Muséum National d’Histoire Naturelle, 38 rue du Port Blanc, 35800 Dinard, France

Publication date: 2009-06-01

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