Research Article Open Access

Microcystin-LR Affects Ultimobranchial Gland of Catfish Heteropneustes fossilis

Chandra Prakash1 and Sunil Kumar Srivastav1
  • 1 University Gorakhpur- 273009, India


Microcystin-LR (2.5 µg/25 g) was injected intraperitoneally to the fish Heteropneustes fossilis on day 1, 10 and 20 kept in either freshwater or freshwater containing ZnCl2. The fishes were killed on day 5, 10, 20 and 30 day. The serum calcium levels was estimated and ultimobranchial glands were processed for routine histology. Microcystin-LR administration to fish Heteropneustes fossilis induced hypocalcemia and ultimobranchial gland exhibit decreased nuclear volume of the ultimobranchial cells. Degenerative ultimobranchial gland cells were obtained after day 20. While the fish injected with MC-LR kept in ZnCl2 has shown no change in serum calcium levels as well as in histology of ultimobranchial gland cells.

American Journal of Environmental Sciences
Volume 17 No. 3, 2021, 43-48


Submitted On: 21 November 2019 Published On: 5 July 2021

How to Cite: Prakash, C. & Srivastav, S. K. (2021). Microcystin-LR Affects Ultimobranchial Gland of Catfish Heteropneustes fossilis. American Journal of Environmental Sciences, 17(3), 43-48.

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  • Microcystin-LR
  • Catfish
  • Calcium
  • Hypocalcemia
  • Ultimobranchial Gland