Size structure and length-length relationships for two shark species (Chondrichthyes: Carcharhiniformes) from an artisanal fishery in the Gulf of Tehuantepec, Southern Mexico

Authors

DOI:

https://doi.org/10.22370/rbmo.2022.57.Especial.3414

Keywords:

Carcharhinus falciformis, Sphyrna lewini, Tropical Eastern Pacific, orbit-fork length

Abstract

This paper presents size structure by sex and length-length relationships for Carcharhinus falciformis and Sphyrna lewini caught by an artisanal fishery in the Gulf of Tehuantepec, Mexico. According to a local processing practice in this fishery, when sharks are landed, their jaws are removed but not their heads. The orbit-fork length was evaluated as a basis for estimating total length. A good fit (r2 > 0.9) of linear regression models for length-length relationships was calculated for both species. Overall data showed that this area is an important habitat for juvenile sharks, and standardizing measurements is proposed to better characterize the catch structure.

Author Biography

Emilio I. Romero-Berny, Universidad de Ciencias y Artes de Chiapas

Corresponding author: emilio.romero@unicach.mx

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Published

2022-10-04

How to Cite

Celaya-Castillo, C. ., Romero-Berny, E. I., López-Vila, J. M. ., & Arias-Aréchiga, J. P. . (2022). Size structure and length-length relationships for two shark species (Chondrichthyes: Carcharhiniformes) from an artisanal fishery in the Gulf of Tehuantepec, Southern Mexico. Revista De Biología Marina yOceanografía, 57(Especial), 243–248. https://doi.org/10.22370/rbmo.2022.57.Especial.3414

Issue

Vol. 57 No. Especial (2022): Condrictios

Section

Research Note

License

Copyright (c) 2022 Cristina Celaya-Castillo, Emilio I. Romero-Berny, Jesús M. López-Vila, Juan P. Arias-Aréchiga

Creative Commons License

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

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