Changes in Haematological Parameters of Freshwater Air-breathing Teleost Channa punctata, Bloch on Exposure to Refinery Effluents

The contamination of the aquatic ecosystem from the effluents discharged from various industries is an exaggerating ecological problem now-a-day. These effluents have posed a serious threat due to their toxic characteristics on the aquatic flora and fauna especially on fishes which may ultimately affect human health as fish is a proteinaceous staple food. Haematological parameters are considered as stress indicators and are useful for assessing the health of fish exposed to changing environment. The aimwas to study the impact of the refinery effluents on the haematological parameters of Channa punctata Bloch. A total of 80 fishes were divided into control and experimental groups. The control group was kept in tap water and experimental groups were exposed to two different concentration 25% and 50% of the refinery effluents. The experiment was conducted for 7 days. The cytomorphological changes of the blood cell components were taken into account besides the haematological parameters. The gross morphology of the blood cell components showed various kinds of morphological alterations. The numerical as well as morphological changes of the blood component were in time and dose dependent manner. During experimental period, total leucocyte count, Mean Corpuscular Volume and Mean Corpuscular Haemoglobin were gradually increased whereas erythrocyte count, haemoglobin, haemocrit, Mean Corpuscular Haemoglobin Concentration showed depletion in its level. From the present study, it is evident that refinery effluents might have potential to cause haematotoxicity in fishes if released without proper treatment.

@article{barsha2026,
  author  = {Barsha Sarma1*, Uma Dutta1, Palki Hazarika2 and Shibani Kalita2},
  title   = {{Changes in Haematological Parameters of Freshwater Air-breathing Teleost Channa punctata, Bloch on Exposure to Refinery Effluents}},
  journal = {Journal of Bioresearch},
  year    = {2026},
  volume  = {1},
  number  = {2},
  doi     = {https://doi.org/10.17605/OSF.IO/FSCA3},
}