First record of a leucistic Narcine bancrofti (Elasmobranchii, Narcinidae) from the northern Gulf of Mexico

Jones C.M., Hoffmayer E.R., Gropp R.P.

Date de parution: septembre 2016
Volume: 40
Number: 3
Pagination: 249-251
Editeur: Société Française d'Ichtyologie
doi: https://doi.org/10.26028/cybium/2016-403-008
Résumé

Herein, we report on the first record of leucism in Narcine bancrofti (Griffith & Smith, 1834). The leucistic ray, an immature male, was captured with 21 conspecifics exhibiting normal coloration for the species. Nineteen of these animals, including the leucistic ray, were retained for further examination. Twelve morphometrics were measured on each ray and regressed against total length to determine whether additional morphological abnormalities were present. In each case, the leucistic ray exhibited similar relative proportions to the normally colored rays.

Mots-clés: First record - Gulf of Mexico - Leucism - Narcine bancrofti - Narcinidae
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