Effect of extender composition on sperm cryopreservation of Asian catfish Heteropneustes fossilis (Bloch) and Clarias batrachus (Linnaeus)

Histological Studies on Kidney of Cadmium Chloride Exposed Freshwater Catfish , Heteropneustes Fossilis ( Bloch )

Dose- and time-dependent micronucleus induction in peripheral erythrocytes of catfish, Heteropneustes fossilis (Bloch) by zinc

As far as the detection of metal genotoxicity in fish is concerned, micronucleus (MN) test is considered an extremely suitable measure. In this study, frequencies of micronucleated erythrocytes were scored in peripheral blood of catfish, Heteropneustes fossilis (bloch) after acute in-vivo exposure of zinc at different concentrations (5, 10 and 30 ppm) in the laboratory condition. These three co...

Acute toxicity bioassay of dimethoate on freshwater airbreathing catfish, Heteropneustes fossilis (Bloch).

Pesticides are chemicals used for pest control in the agricultural fields. They finally reach the surrounding water bodies through surface runoff affecting the aquatic fauna. Dimethoate is frequently used organophosphate pesticide due to its high effectiveness and rapid breakdown into environmentally safe products. A 96 hr static acute toxicity test was carried out to determine the LC50 value o...

Effect of Temperature on Mortality and Behavioural Responses in Freshwater Catfish, Heteropneustes fossilis (Bloch) Exposed to Dimethoate

Temperature has significant influence on physio-chemical responses of all living organisms including fish. The present study was conducted to evaluate the effect of temperature on dimethoate toxicity (96 h static bioassay) to freshwater catfish Heteropneustes fossilis. Fish mortality data were recorded at 24, 48, 72 and 96 h and analysed using EPA Probit analysis, Version 1.5, software based on...

Seminal vesicle and testis secretions in ž / Heteropneustes fossilis Bloch : composition and effects on sperm motility and fertilization

Ž . Ž . In spawning catfish Heteropneustes fossilis, seminal vesicle SV plasma SVP , testicular Ž . Ž . plasma TP and blood plasma BP all showed considerable differences in physical and chemical Ž . Ž . characteristics. SVP is more viscous 4.61"0.08 centipoise , and its specific gravity 1.06"0.003 Ž y1. and osmolality 277.4"8.32 m osmol kg are significantly higher than BP and TP. SVP has a Ž . ...