title: New eastern Pacific Ocean records of Hydrolagus melanophasma, with annotations of a juvenile female.
abstract: Two new records of Hydrolagus melanophasma, one juvenile female from off the central Mexican coast and one adult male from off the coast of Ecuador, confirm the presence of this species throughout its known range in the eastern Pacific Ocean, from southern California, U.S.A., to Valdivia, Chile. This report gives a description and comparison of proportional measurements, head shape and colouration for juvenile and adult H. melanophasma. A taxonomic key to distinguish the eastern Pacific Ocean species of Hydrolagus is included.
authors: Instituto Nacional de Pesca, Centro Regional de Investigación Pesquera-Mazatlán, Mazatlán, Sinaloa, México. haguirre@ola.icmyl.unam.mx
authors: H
authors: H
authors: Aguirre-Villaseñor
authors: C
authors: C
authors: Salas-Singh
authors: J
authors: J
authors: Madrid-Vera
authors: J
authors: J
authors: Martínez-Ortiz
authors: D A
authors: DA
authors: Didier
authors: D A
authors: DA
authors: Ebert
mesh_terms: D000818:Animals; D049628:Body Size / Q000502:physiology; D004484:Ecuador; D005260:Female; D005399:Fishes / Q000033:anatomy & histology* / Q000502:physiology*; D008297:Male; D008800:Mexico; D010140:Pacific Ocean; D010858:Pigmentation; D013045:Species Specificity