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

Estructura de tallas y relaciones longitud-longitud para dos especies de tiburones (Chondrichthyes: Carcharhiniformes) de una pesquería artesanal en el Golfo de Tehuantepec, sureste de México

Autores/as

DOI:

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

Palabras clave:

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

Resumen

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.

Biografía del autor/a

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

Corresponding author: emilio.romero@unicach.mx

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Publicado

2022-10-04

Cómo citar

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: Estructura de tallas y relaciones longitud-longitud para dos especies de tiburones (Chondrichthyes: Carcharhiniformes) de una pesquería artesanal en el Golfo de Tehuantepec, sureste de México . Revista De Biología Marina Y Oceanografía, 57(Especial), 243–248. https://doi.org/10.22370/rbmo.2022.57.Especial.3414

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