Acute toxicity of Gammalin 20 to Chrysichthys nigrodigitatus (Lacepede)

Oti, E.E. (2003) Acute toxicity of Gammalin 20 to Chrysichthys nigrodigitatus (Lacepede). In: 16th Annual Conference of the Fisheries Society of Nigeria (FISON) , 4-9 November 2001 ,Maiduguri, nigeria, pp. 175-179.

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Abstract

The impact of acute exposure of Gammalin 20 (an organochlorine pesticide) was investigated in a static bioassay test over a 96-(4-day) period on the fingerlings of Chrysichthys nigrodigitatus (lacepede). The 96-hLC sub(50) of Gammalin 20 was determined as 2.31 Ug/l with lower and upper limits of toxicities as 2.10 and 4.44 Ug/l respectively. At higher concentrations, the colour of the exposed fish became darker, opercular movement slowed down while pigmentation pattern increased and respiratory distress was observed, erratic swimming, tonic convulsion and no response to gentle prodding, and finally death. The implications of these results were discussed with a suggestion of the total ban on the use of Gammalin 20 in capture fisheries due to its harmful and persistence nature in the aquatic environment

Item Type: Conference or Workshop Item
Title: Acute toxicity of Gammalin 20 to Chrysichthys nigrodigitatus (Lacepede)
Personal Creator/Author:
CreatorsEmail
Oti, E.E.
Page Range: pp. 175-179
Date: 2003
Event Title: 16th Annual Conference of the Fisheries Society of Nigeria (FISON)
Event Type: Conference
Event Location: Maiduguri, nigeria
Event Dates: 4-9 November 2001
Issuing Agency: Fisheries Society of Nigeria
Uncontrolled Keywords: Nigeria; environment management; freshwater fish; pesticides; toxicants; toxicity tests; toxicity tolerance; Chrysichthys nigrodigitatus
Subjects: Pollution
Biology
Item ID: 3615
Depositing User: Ms Maria Kalentsits
Date Deposited: 07 Jul 2010 07:15
Last Modified: 29 Sep 2011 17:03
URI: http://aquaticcommons.org/id/eprint/3615

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