Out of various environmental factors that influence aquatic organisms, temperature is the most all-pervasive. The environmental temperature also affects blood vascular system of aquatic organisms. The present paper deals with the effect of temperature on the Erythrocyte Sedimentation Rate of freshwater fish, Channa punctatus. The freshwater fish, Channa punctatus, were collected from Godavari River, Nanded (Maharashtra). They were acclimated to laboratory condition. The fishes were exposed to different temperatures viz. 15°, 20°, 25°, 30°, 35° and 40° C. The sedimentation rate depends on the RBC count variations. The Erythrocyte Sedimentation Rate was observed at different temperature stress. The values were compared with the fish's acclimated to ambient temperature. The Erythrocyte Sedimentation Rate was found to be increased when Channa punctatus acclimated to cold temperature stress. The sedimentation of erythrocytes was found to be decreased at warm temperature stress.
Temperature of aquatic environment is important for ensuring the normal metabolism of aquatic animals. It also affects blood vascular system of aquatic organisms. The present paper deals with the influence of temperature on the hemoglobin content of freshwater fish, Channa punctatus. The freshwater fish, Channa punctatus, were collected from Godavari River, Nanded (Maharashtra). The fishes were exposed to different temperatures viz. 15°, 20°, 25°, 30°, 35° and 40° C. The total hemoglobin contents were observed at different temperature stress. The values were compared with the fish's acclimated to ambient temperature. The haemoglobin content was found to be increased as temperature increases. The total hemoglobin content was found to be decreased as temperature decreases.
ABSTRACT:The effect of potassium permanganate on protein content in different tissues of fresh water crab, Barytelphusa guerini was studied by using Lowry's Method (1951). The animals were exposed on acute exposure of the potassium permanganate for the present study. The protein content in tissues such as gills, hepatopancreas and muscles were observed. The protein levels in all the tissues were found to be decreased on exposure to potassium permanganate (KMnO 4 ). Under normal physiological condition excess of protein is stored in the tissues like hepatopancreas and muscles in tissues of crab for common metabolic pathways. As per the need of animals it is utilized. On exposure to potassium permanganate the magnitude of protein content was found to be directly linked to the duration of exposure.
Climate change may strongly influence distribution and abundance through changes in survival rate of animals. The freshwater crustacean, Barytelphusa guerini collected from paddy fields of Nanded district. The present paper deals with the survival rate of freshwater crab under temperature stress. The crabs were exposed to six different temperatures ranging from 15°, 20°, 25°, 30°, 35° & 40° C. The survival rate was found to be high at lower temperature (15° & 20° C). The survival rate was initiating to reduce at 25° C and became lowest from 30° C.
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