Edad y crecimiento del tiburón cazón Mustelus henlei (Gill 1863) en el Pacífico Ecuatoriano.

Abstract

This study was carried out with the aim of generating new information through the analysis and reading of the vertebrae of the species, samples were collected in the fishing zone of Jaramijó-Manabí-Ecuador, from August 2023 to July 2024. A total of 164 individuals were obtained, consisting of 97 females and 67 males with lengths ranging from 43.30 - 70.40 cm LT (mean ± SO: 55.28 ± 6.35) and 42 - 58.5 cm L T (mean ± SD: 51.93 ± 4.07) respectively. Age estimates ranged from 2 to 7 years for females and from 2 to 4 years formales. Sígníficant differences were found between sexes with a (p<0.05), showing higher growth in females eompared to males. For the growth curves, two statistieal approaehes were taken into account; frequentist and Bayesian multi-models, through the information criteria AIC and LOOIC exclusion, of which, the one that best fitted these data was the bayesian approach, with Von bertanlaffy model, with the next data for both sex (L~ = 94.23 cm L T, g = O. 14), for female (L~ = 94.81 cm L T, g = 0.13) and for male (L~ = 78.68 cm L T, g = 0.29).