New record and morphometry of the bluntness six gill shark

New record and morphometry of the bluntnose sixgill shark Hexanchus griseus (Chondrichthyes: Hexanchidae) in Baja California Sur, Mexico

Edgar Eduardo Becerril-García, Carlos Augusto Aguilar-Cruz, Alexis Alejandro Jiménez-Pérez & Felipe Galván-Magaña

Latin American Journal of Aquatic Research 45(4), 833-836 (2017)

DOI: https://doi.org/10.3856/vol45-issue4-fulltext-20

Abstract

We report the first record and morphometry of a complete juvenile Hexanchus griseus female shark, caught in Punta Lobos, Baja California Sur, Mexico. The oceanographic conditions of the area, where the specimen was caught, coincide with the habitat previously described for this shark species, with low temperature, stable salinity and high hydrostatic pressure. There is an overall lack of information about H. griseus in Mexico, with only eight records of its presence in the Mexican Pacific. Moreover, none of these previous records provided detailed information on the morphometry of a whole bluntnose sixgill shark. Here, we present the morphometric measures of a complete individual caught in shallow waters.

Keywords: Hexanchus griseus, elasmobranchs, distribution, bathyal zone, Tropical Eastern Pacific.