Aim: Three species of fish, Notoptrus notoptrus, Channa punctatus and Glossogobius giuris, were shown to accumulate heavy metals like Zn,Fe,Ni,Pb,Cd, Cu in their gut-free bodies, liver, gills. Methodology: These fish inhabit the Kapila River Nanjangud area Mysore district. Result: Fish tissues (muscle, gills liver) sediments found contain Fe, Pb, Ni, Zn pollution. It was also determined that th...

The extensive usage and improper disposal of pharmaceuticals have the potential to contaminate the water and sediments. Diclofenac is a widely prescribed non-steroidal anti-inflammatory drug that has been frequently detected in surface waters worldwide. There are evidences of its toxicity in aquatic organisms like phytoplankton, zooplankton and fish. The present study aims to investigate the bi...

In Channa punctatus testicular regression commonly observed during spawning and postspawing phases of reproductive cycle. In the present study testicular regression was frequently noticed in fish maintained under both long photoperiod-warm temperature (LD 16 : 8-30 degrees C) and short photoperiod-warm temperature (LD 8 : 16-30 degrees C) regimes. Testicular regression was characterized by dist...

In order to record the effect of carbamate pesticide on hypothalamus of Channa punctatus, fish were exposed to sublethal concentration (0.18 mg l(-1), 30% LC50 for 96 hr) of Cartap for 24, 48, 72 and 96 hr under static bioassay condition. Hypothalamo-neurosecretory complex of the murrel consisted mainly of nucleus preopticus (NPO), nucleus lateralis tuberis (NLT) and their axonal tracts. NPO is...