Toxicidad de zinc por exposición subletal en trucha arco iris (Oncorhynchus mykiss)
DOI:
https://doi.org/10.21615/cesmvz.15.1.1Palabras clave:
Trucha arcoiris, metales pesados, Zinc, crecimientoResumen
TZinc (Zn), puede alterar diferentes procesos fisiológicos en peces, tales como, el crecimiento y los parámetros séricos. El objetivo de este estudio fue investigar la toxicidad de Zn en la exposición subletal de la trucha arco iris (Oncorhnychus mykiss). Los peces expuestos a niveles más altos de Zn crecieron más lentamente que los peces expuestos a niveles más bajos de Zn. El aumento de peso y la SGR (tasa de crecimiento específica) disminuyeron linealmente a medida que aumentó el nivel de Zn en el agua. El CF (factor de condición) de los peces cultivados en agua con una alta concentración de Zn, también disminuyó significativamente en comparación con la baja concentración de Zn, mientras que el índice de conversión de alimentos (FCR) aumentó con la concentración de Zn en el agua. Las actividades AST (Aspartate Transaminase) y ALT (Alanine Transaminase) fueron significativamente alteradas por el Zn y mostraron un patrón lineal y disminuyeron después de 30 días, mientras que los niveles de ALP (Fosfatasa Alcalina) mostraron un aumento notable desde un nivel medio de control. Este estudio sugiere que los parámetros bioquímicos de crecimiento y suero podrían usarse como biomarcadores importantes y sensibles para controlar la toxicidad de metales pesados en el estado de salud de los peces.
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