• P.V. Kolkhede

Aquatic animals are constantly being exposed to an array of toxic substances which are leaching through industrial effluents and agriculture. To protect by these dreadful chemicals these animals are naturally endowed by an intrinsic self sustaining defense system. Fish are first group of organisms that possess an innate and adaptive immune system1.In fish immune system skin mucosa is very important part serving as an anatomical and physiological barrier against external hazards. Skin mucosa cells of fishes can be used to maintain stress in them .Stress hormones adrenocorticotrophins are produced by leucocytes to allow for bidirectional communication between neuroendocrine system and immune system2.Circulating leucocytes are the key cells of vertebrate innate immunity, namely eosinophils,macrophages, and neutrophils3. Hence the following study has been undertaken to evaluate stress in freshwater edible fish, Channa orientalis (Sch) exposed to cypermethrin on blood parameter leukocyte.

"IMMUNE RESPONSE IN A POLLUTENT STRESSED FISH", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.1099-1102, May-2019, Available :http://www.jetir.org/papers/JETIR1905S64.pdf

"IMMUNE RESPONSE IN A POLLUTENT STRESSED FISH", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp1099-1102, May-2019, Available at : http://www.jetir.org/papers/JETIR1905S64.pdf