• Jawaid Akhter
• Dr. Anirudh Singh

The Indian Air-breathing fish, Anabas tesudineus was used as a model animal to investigate the responses to chromium sulphate and potassium dichromate in water bodies. The fish, Anabas tesudineus were exposed to sublethal concentration of 15.25mg/L of chromium sulphate and 1.95mg/L potassium dichromate for 24, 48, 72 and 96 hours as well as 15, 30 and 45 days to study alterations in opercular beats. The mean opercular movement of controlled Anabas tesudineus was found 48 (46-49)min-1. In chromium sulphate treated fish, the opercular movement showed a mean initial significant increase from 49 to 56 min-1 during 24-72 hours duration and then it decreased significantly to 43 to 48 min-1 during 96 hours and long term treatment. In potassium dichromate treated fish, it showed a mean initial significant increase from 50 to 57 min-1 during 24-72 hours duration and then it decreased significantly to 41 to 46 min-1 during 96 hours and long term treatment. The experiment showed more adverse effect of potassium dichromate on opercular movement in comparison to chromium sulphate as the toxicant. Changes in opercuiar beats are treated as the important diagnostic tools and indicators of stress due to pollutants and environmental fluctuations.

Chromium Toxicity, Opercular beats, Anabas tesudineus

"Chromium (III and VI) induced Opercular alterations in an Indian Air-breathing fish, Anabas testudineus (Bloch)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.500-502, June 2019, Available :http://www.jetir.org/papers/JETIR1908A18.pdf

"Chromium (III and VI) induced Opercular alterations in an Indian Air-breathing fish, Anabas testudineus (Bloch)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp500-502, June 2019, Available at : http://www.jetir.org/papers/JETIR1908A18.pdf