EFFECT OF SHORT TERM EXPOSURE TO UREA ON CAT FISH (HETEROPNEUSTES FOSSILIS) A LIGHT MICROSCOPIC STUDY OF THE GILLS.

Tapashi Gupta*

ABSTRACT

Extensive use of urea in croplands affects the life and sustainability of other living creatures like fishes, amphibian and reptiles etc directly or indirectly. Urea is a most commonly used nitrogenous fertilizer and this fertilizer affects the skin and respiratory organs like gills of cat fishes which are generally found in or near the drainage water of croplands. The affects were so profound that it can easily be studied under light microscope.

Keywords: living creatures like fishes, amphibian and reptiles.