EFFECT OF TEMPERATURE AND CHLORIDE ON NITRITE TOXICITY IN GRASS CARP Ctenopharyngodon idella (Pisces, Cyprinidae)
In juvenile grass carp acclimated at 24, 29 and 32ºC the acute toxicity of nitrite was measured; in order to isolate the ionic effects of nitrite from chloride, distilled water was used. Subsequently, combined effects of temperature, nitrite and chloride on fish exposed to nitrite-CL50, CL70, and CL...
| Autores: | , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | México |
| Institución: | UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO |
| Repositorio: | Revista Internacional de Contaminación Ambiental |
| Idioma: | español |
| OAI Identifier: | oai:ojs.pkp.sfu.ca:article/29855 |
| Acceso en línea: | https://www.revistascca.unam.mx/rica/index.php/rica/article/view/29855 |
| Access Level: | acceso abierto |
| Palabra clave: | ecotoxicología nitrito cloruro temperatura Ctenopharyngodon idella |
| Sumario: | In juvenile grass carp acclimated at 24, 29 and 32ºC the acute toxicity of nitrite was measured; in order to isolate the ionic effects of nitrite from chloride, distilled water was used. Subsequently, combined effects of temperature, nitrite and chloride on fish exposed to nitrite-CL50, CL70, and CL90 for 48 h was measured. The mortality estimator levels increased at both 29 and 32ºC compared with 24ºC, being greater the former than the latter. Chloride protection was manifest in fish exposed to the CL50 and less evident in those exposed to the nitrite-CL70 and CL90. A polynomial equation which includes al1 variables and predict that increasing the ionic ratio (nitritelchloride) the mortality augments but less at 2g°C than at the other temperatures, was calculated. |
|---|