RESUMEN
The response of NADPH cytochrome C reductase (NCCR) activity in liver of Labeo rohita fish exposed to the pesticides, 0.25 microgl(-1) endosulfan and 2 mg/l monocrotophos was studied. In terms of specific enzyme activity (mU/mg protein) a significant level of NCCR was observed in the liver tissues of Labeo rohita exposed to the pesticides, when compared to the control fish (2.460 mU/mg protein). Increase of NCCR activity was more in the liver of the fish exposed to monocrotophos (4.595 mU/mg protein) than those exposed to endosulfan (2.850 mU/mg protein). The results demonstrate that the pesticides, endosulfan and monocrotophos, interfere with NADPH dependent monoxygenase mechanism and are effective inducers of NADPH cytochrome C reductase. The activity of NCCR in the liver tissue of Labeo rohita may serve as a useful tool for monitoring aquatic pollution.
Asunto(s)
Animales , Tamaño Corporal , Peso Corporal , Cyprinidae/metabolismo , Endosulfano/metabolismo , Insecticidas/metabolismo , Hígado/efectos de los fármacos , Monocrotofos/metabolismo , NADPH-Ferrihemoproteína Reductasa/metabolismo , Factores de Tiempo , Contaminantes Químicos del Agua/metabolismoRESUMEN
The objective of the present study is to evaluate the nutrition and growth of Labeo rohita under the sublethal stress of endosulfan. It has been observed that the feed utilisation and growth were inferior in the fish under the stress of the toxicant. It was more so in the test fish under the influence of higher sublethal concentration. The food conversion ratio was higher suggesting that the nutrients are wasted.
Asunto(s)
Animales , Cyprinidae/crecimiento & desarrollo , Endosulfano/efectos adversos , Hidrocarburos Clorados , Insecticidas/efectos adversos , Estado Nutricional , Contaminantes Químicos del Agua/efectos adversosRESUMEN
The present study deals with the biochemical composition of Channa orientalis from a habitat polluted by slaughter house wastes in comparison to an unpolluted habitat of Mudasarlova stream of Visakhapatnam. The total proteins, carbohydrates and lipids were found to be less in the organisms collected from the polluted habitat. The probable reasons for these variations are discussed in detail.
Asunto(s)
Mataderos , Animales , Carbohidratos/análisis , Exposición a Riesgos Ambientales , Lípidos/análisis , Perciformes/fisiología , Proteínas/análisis , Eliminación de Residuos Líquidos , Contaminantes del Agua/efectos adversosRESUMEN
Studies on stages of maturity, gonado-somatic indices and breeding cycle from two different habitats viz., the polluted Harbour Waters and the unpolluted Yerragedda Mouth revealed that M. cyprinoides breeds twice a year i.e., during Jan-Jul and Dec-Jan. Size at first maturity was 18 cm. in females and 19 cm. in males at both the stations. Sex ratio was 1:1 at the polluted station and 1:1.1 at the unpolluted station indicating a slight domination of females.