Effect of Glyphosate on Fish Behavior and Histological Alteration of Gills in Asian Sea Bass (Lates calcarifer)

Authors

  • Chutima Thanomsit Rajamangala University of Technology Isan Surin Campus
  • Amnuay Wattanakornsiri Surindra Rajabhat University
  • Phochit Nanthanawat Burapha University

Abstract

Study on effects of glyphosate on Asian sea bass (Lates calcarifer) after exposure at 24, 48, 72 and 96 h , and the concentrations of 0, 2.5, 5, 7.5 and 10 mg L-1 by measuring behavior change, assess mortality rate and gill tissue alterations of fish were done. The results showed that the exposed glyphosate fish swam erratically with jerky movement. Their movement was loss of balance and faster than that of in the non-exposed. Their body color and gill were fade out. Moreover, edema of gill and abdominal were observed. Hemorrhage was found in various parts of the body. The mortality percentage increased with an increasing in exposure time. LC50 of glyphosate in Asian sea bass after 24, 48, 72 and 96 h of exposure were 5.57, 3.55, 2.5 and 0.76 mg L-1, respectively. The alteration found could be distinguished as 3 stages: (1) edema, fusion of lamellae irregular thickening of primary lamellae epithelium and epithelial lifting, (2) blood congestion and (3) lamellar aneurysm and necrosis of lamellae. This responsiveness of Asian sea bass can be used as an early warning signal monitoring glyphosate pollution in the water. Keywords: Asian sea bass, Behavior, Glyphosate, Histology, Herbicide

Author Biographies

Chutima Thanomsit, Rajamangala University of Technology Isan Surin Campus

Department of Fisheries, Faculty of Agriculture and Technology

Amnuay Wattanakornsiri, Surindra Rajabhat University

Department of Agriculture and Environment, Faculty of Science and Technology

Phochit Nanthanawat, Burapha University

Department of Biotechnology, Faculty of Science

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Published

2016-07-27