Estimativa do tamanho de estoques pesqueiros da Amazônia baseada em dados de captura e esforço
DOI:
https://doi.org/10.37002/biodiversidadebrasileira.v7i1.617Palabras clave:
Amazon, pesca, capturabilidade, biodiversidad acuáticaResumen
La pesca es una actividad que requiere la aplicación práctica de las teoría de la ecológia de las poblaciones, y estimar el tamaño de las poblaciones de peces correctamente es esencial para que puedan ser manejados adecuadamente. Para ello uno de los parámetros clave es la capturabilidad (q), pero a menudo ha sido considerado como un parámetro constante, lo que puede conducir a evaluaciones incorrectas, tanto para el potencial de la pesca como para el estado de conservación de estas poblaciones. En este trabajo se intenta utilizar un método basado sólo en la captura y esfuerzo para hacer frente a la variabilidad potencial de la capturabilidad de algunas especies de peces comerciales del Amazonas con el fin de estimar el tamaño de sus poblaciones y los niveles de explotación de datos. Los valores del coeficiente de capturabilidad encontrados para las especies estudiadas (Colossoma
macropomum, Semaprochilodus spp., Prochilodus nigricans, Triportheus spp., Brycon spp., Myleus spp.,
Mylossoma spp., Hypophthalmus spp., Brachyplatystoma rousseauxii, Pterygoplichthys pardalis y Cichla
spp.) variaron desde el 2,8x10-5 1,3x10-4, y el valor encontraron la suma del tamaño de las poblaciones
de peces fue de alrededor de 600.000 toneladas. Se discuten las implicaciones metodológicas para el
contexto de la escasez de datos, estudios de la capturabilidade, la evaluación del estado de conservación de las especies y monitoreo de la pesca.
Citas
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