Testosterone and estradiol-17 beta dependent phospholipid biosynthesis in ovariectomized catfish, Heteropneustes fossilis (Bloch).

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...

Effects of lead nitrate on histo-cytological alterations of corpuscles of Stannius of stinging catfish, Heteropneustes fossilis

Background: The present study investigated the effects of lead nitrate on the histo-cytological changes in the corpuscles of Stannius (CS) of Heteropneustes fossilis. Methods: Catfish, Heteropneustes fossilis were subjected to 657.6 mg/L and 164.4 mg/L of lead nitrate for 96 h and 28 days, respectively. Blood from fish was collected on 24, 48, 72 and 96 h in short-term and after 7, 14, 21, an...

Estrogen Regulation of Gonadotropin Subunit (GPα, FSHβ, LHβ) mRNA Expression during Sexually Quiescent and Breeding Phases in the Female Catfish Heteropneustes Fossilis

Estrogens exert a feedback control on gonadotropin (GtH) secretion at the level of the hypothalamus and pituitary. In the present study, female catfish were ovariectomized (OVX) for 5 weeks in resting (December-January) and preparatory (March-April) phases and supplemented with estradiol-17β (E2, 0.05 and 0.5 μg/g body mass) in 3-week ovariectomized fish to demonstrate the nature of feedback co...

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...