Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
Determinación de la edad de <i>Istiophorus platypterus</i> (Pisces: Istiophoridae) al sur del Golfo de California, México
PDF (Español (España))

How to Cite

Alvarado-Castillo, R. M., & Félix-Uraga, R. (1996). Determinación de la edad de <i>Istiophorus platypterus</i> (Pisces: Istiophoridae) al sur del Golfo de California, México. Revista De Biología Tropical, 44(1), 233–239. Retrieved from https://revistas.ucr.ac.cr/index.php/rbt/article/view/21578

Abstract

Specimens (973) of the sailfish Istiophorus platypterus caught by sport fishing in the southern of the Gulf California from 1989 to 1991 were measured. The fourth spine of the dorsal fin of 745 specimens were also collected to estimate age and growth based on observations of a transyerse section. We were able to read the opaque and translucent bands of 97% of the sections. A monthly analysis of the type of edge, opaque or translucent, indicated that the formation of an opaque band from a hialine one takes one year. Thus, we were able to estimate the numbers in age groups from O to 7. The most abundant age groups were, in order 3, 2 and 4. The majority of!be specimens were between 180 and 210 cm in body length.
PDF (Español (España))

Comments

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Copyright (c) 1996 Revista de Biología Tropical

Downloads

Download data is not yet available.