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Seasonal histopathological alterations caused by Adenoscolex oreini in Schizothorax niger of Kashmir valley

Asifa Wali, Masood-ul Hassan Balkhi, Rafia Maqbool, M.M. Darzi, Farooz  A. Bhat and Feroz  A. Shaha

Faculty of Fisheries, Sher-e-Kashmir University of Agricultural Sciences and Technology-Kashmir, Rangil Ganderbal-190 006 Jammu & Kashmir , India.

asifawali@gmail.com

Page Range:
911-913
Article ID:
B-3286
Online Published:
28-04-2017
Abstract

Fishes  infected  with  Adenoscolex oreini appeared anemic   and  the  abdomen viscera  appeared  red  on  opening  the  abdomen  and  the  abdominal  fluid  was tinged  red.  On  opening  the  intestine  necrotic  debris  was  present  on  the surface  and numerous parasites were pesent. The histopathological alterations observed in the intestine of fish were (severe degenerative and necrotic changes in the intestinal mucosa as well as edema between submucosa and mucosa). In parasitized Schizothorax niger, hyperplasia of intestinal mucous cells and enhanced mucus secretion were also noticed. Cestode bodies were covered with an adherent mucus blanket. The  analysis  of  the  seasonal  variation  on  the  histological  parameters leads  to  the  conclusion  that  the distribution or the severity of the lesions observed  in  the  these  organs  were  not  related  to  the  seasons. Such  information  confirms  that  histopathological alterations  are  good  biomarkers  for  field  assessment,  in  particular  in  tropical areas  that  are  naturally  subject  to  a  multiplicity  of  environmental  variations.  It  must  be  emphasized  that  histopathology  is  able  to  evaluate  the early  effects  and  the  responses  to  acute  exposure  to  parasitic  infections  and chemical  stressors. 

Keywords
Cestodes, Histopathological, Necrotic, Parasites
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