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First record of abnormal cephalic horns in the California bat ray Myliobatis californica

Published online by Cambridge University Press:  22 February 2013

Sergio R. Ramírez-Amaro
Centro Interdisciplinario de Ciencias Marinas, Avenida Instituto Politécnico Nacional, s/n Col. Playa Palo de Santa Rita, La Paz, B.C.S. 23096, México
Gerardo González-Barba
Universidad Autónoma de Baja California Sur, Apartado Postal 12-B, La Paz, B.C.S. 23081, México
Felipe Galván-Magaña*
Centro Interdisciplinario de Ciencias Marinas, Avenida Instituto Politécnico Nacional, s/n Col. Playa Palo de Santa Rita, La Paz, B.C.S. 23096, México
Daniel Cartamil
Scripps Institution of Oceanography, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0204, USA
Correspondence should be addressed to: F. Galván-Magaña, Centro Interdisciplinario de Ciencias Marinas, Avenida Instituto Politécnico Nacional, s/n Col. Playa Palo de Santa Rita, La Paz, B.C.S. 23096, México email:
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The first case of abnormal cephalic horns in the California bat ray, Myliobatis californica was found in one male juvenile specimen caught in a gillnet by artisanal elasmobranch fishermen on the west coast of Baja California Sur, Mexico. The specimen had three cephalic horns, two in the cephalic lobes zone and one in the rostral middle zone which could be indicative of a morphogenetic plasticity in these taxa that may have facilitated the evolution of rhinopterid and mobulid species from a common myliobatid ancestor with a similar role of feeding in Mobulidae and Rhinopteridae subfamilies.

Research Article
Copyright © Marine Biological Association of the United Kingdom 2013

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