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Revista mexicana de biodiversidad
versão On-line ISSN 2007-8706versão impressa ISSN 1870-3453
Resumo
BRIONES-MENDOZA, Jesús; PINCAY-ESPINOZA, Jonathan; PALMA-CHAVEZ, Javier e ROMERO-CAICEDO, Andrés. Notes on the biology of the blue shark Prionace glauca (Carcharhiniformes: Carcharhinidae) in Ecuadorian waters. Rev. Mex. Biodiv. [online]. 2016, vol.87, n.4, pp.1387-1390. ISSN 2007-8706. https://doi.org/10.1016/j.rmb.2016.09.007.
The blue shark Prionace glauca is an important fishery resource in Ecuador. A total of 577 organisms between 130-307 cm of total length (TL) was recorded. The sex ratio was 1.06 males: 1 females. In males, the clasper length was between 4 to 21.2 cm and the inflection point was estimated at 189.7 cm TL. The mean size at maturity (TL50) for male blue sharks was 187.1 cm TL.
Palavras-chave : Segregation; Sexual maturity; Clasper; Manta.