Evaluation of Haematological Response and Recovery Ability of Nile tilapia (Oreochromis niloticus) exposure to cypermethrin

Authors

  • Manjunatha Bangeppari
  • Juan Ortiz
  • Daisy Muñoz

DOI:

https://doi.org/10.24133/cctespe.v10i1.26

Abstract

AbstractThe present study was carried out to investigate the influences of sub-lethal toxicity of cypermethrin (25% EC) exposure to Oreochromis niloticus (fingerlings). The consequence was assessed on the basis of impact on short term exposures of its below safe concentrations (1/2 (0.05 μg/L) and 1/10 (0.01 μg/L) on some haematological (RBC, WBC and Hb) studies. The sub-lethal exposure studies were made on the same day and after 7 days of exposure. Haematological recovery was also studied by maintaining the cypermethrin exposed fish in a fresh water system for an additional 7 days. The blood parameters viz., total red blood cells (RBCs) and white blood cells (WBCs) count, Hb values were analyzed using standard methods. A decrease in RBCs count and hemoglobin (Hb) value were found in both concentrations of cypermethrin exposure while total WBCs count were increased in both concentrations of cypermethrin as compared to the control fish. Complete recovery was obtained in all the studies after a recovery period of 7 days and significant effects were observed for both concentrations in exposed fish.

KeywordsNile tilapia (Oreochromis niloticus), Cypermethrin, Haematology, Recovery

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Published

2015-06-03

Issue

Section

CIENCIAS DE LA VIDA Y AGRICULTURA