Diferenciación morfológica en poblaciones de Ambystoma dumerilii en condiciones de cautiverio y vida libre
DOI:
https://doi.org/10.22201/ib.20078706e.2023.94.4969Palabras clave:
Ambystoma, Achoque, Patrones alométricos, Asimetría fluctuante, Morfometría geométrica, Perturbación del hábitatResumen
Ambystoma dumerilii, conocido como “achoque”, es una salamandra microendémica del lago de Pátzcuaro, considerada como en peligro crítico. Las principales amenazas son los altos niveles de contaminación del agua y
de eutrofización, además de las especies invasoras dentro del hábitat del achoque. Por estas razones, un importante
esfuerzo de conservación se ha enfocado en la crianza del achoque en cautiverio. Sin embargo, el cautiverio es un
estresor derivado de las condiciones no óptimas que pueden tener importantes consecuencias fisiológicas que se
reflejan en las condiciones corporales. Por tanto, nuestro objetivo fue evaluar la condición de individuos de A. dumerilii a través del análisis de la morfología utilizando diferentes parámetros como tallas, morfometría geométrica, asimetría fluctuante y alometría, en individuos del lago de Pátzcuaro y en cautiverio. Encontramos que casi todos los rasgos tienen una relación alométrica negativa con el tamaño corporal en individuos de ambas condiciones. Nuestros resultados mostraron que los individuos del lago presentaron mayores tamaños en los caracteres morfológicos, cuerpos más delgados y mayores niveles de asimetría fluctuante que los individuos en cautiverio, todos estos resultados son consistentes en el contexto del desempeño con mayores adaptaciones potenciales para aumentar el rendimiento del nado que los individuos en cautiverio.
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