Effects of Glyphosate Herbicide on Physiological Parameters of Koi Carp, Cyprinus Carpio (Linnaeus, 1758) Fingerlings 

DOI: 10.18805/IJAR.B-3827    | Article Id: B-3827 | Page : 266-270
Citation :- Effects of Glyphosate Herbicide on Physiological Parameters of Koi Carp, Cyprinus Carpio (Linnaeus, 1758) Fingerlings.Indian Journal Of Animal Research.2021.(55):266-270
F. Sanudi, S.T. Indulkar, A.D. Adsul, A.S. Pawase, M.S. Sawant fsanudi@gmail.com
Address : College of Fisheries, Dr Balasaheb Sawant Konkan Krishi Vidyapeeth, Ratnagiri-415 629, Maharashtra, India.
Submitted Date : 3-04-2019
Accepted Date : 14-01-2021

Abstract

Background: Sub-lethal toxicity bioassay experiments were conducted to determine the toxicity of glyphosate herbicide on Koi carp, Cyprinus carpio fingerlings. Koi carp fingerlings with mean length 8.06 ± 0.99 cm were obtained from a freshwater fish seed hatchery of the university.
Methods: The fishes were exposed to sub-lethal concentrations i.e. 1/10th (3.6 mgL-1) and 1/5th (6.6 mgL-1) of glyphosate. Oxygen consumption rate, Ammonia-Nitrogen excretion rate, Oxygen:Nitrogen ratio and food consumption rate were recorded after every 7 days for a period of 28 days.
Result: Results indicated significant decrease (P<0.05) in oxygen consumption in 1/10th and 1/5th of LC50 concentrations. Ammonia-Nitrogen significcantly increased in exposed fishes. Oxygen : Nitrogen ratio and food consumption rate also significantly decreased (P>0.05) in treated fishes. The results indicated that glyphosate had impacts on exposed fish, hence, the need of regulation of its usage to protect non-targeted species and the environment.

Keywords

Bioassay Cyprinus carpio Glyphosate Herbicide Koi carp Lethal toxicity

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