Recovery Of Choline And Non-Cholinesterase Activity Of The Freshwater Snail Lymnaea Natalensis Following Exposure To Six Pesticides

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dc.contributor.authorNaik, Yogeshkumar S.
dc.contributor.authorBasopo, N.
dc.contributor.authorNyathi, C.B.
dc.date.accessioned2013-03-12T11:50:36Z
dc.date.accessioned2023-06-26T12:55:35Z
dc.date.available2013-03-12T11:50:36Z
dc.date.available2023-06-26T12:55:35Z
dc.date.issued2013-03-12
dc.descriptionPresented at the 5th Congress of the Federation of African Societies of Biochemistry and Molecular Biology in November 2006.en_US
dc.description.abstractOrganophosphates and carbamates are the most widely used insecticides mainly because they are readily biodegradable in the environment. We investigated the recovery of esterase activity of an aquatic snail L. natalensis following a 24-hour exposure to 6 different pest.icides. A third of the snails were sacrificed after 24 hours while another third was allowed to recover in clean water for 14 days and the remainder for 28 days. All pesticides caused significant inhibition of esterase activity. Aldicarb caused the highest inhibition in esterase activity 98 % while thiamethoxam caused the least 61 %. Esterase activity improved significantly in the recovery period and 14 days in the recovery period, aldicarb and thiamethoxam exposed snails had recovered to 57 % and 67 % of control. After 28 days of recovery, aldicarb exposed snails had only 62 % esterase activity in comparison to controls. The results show that even after 28 days of recovery, esterase activity was still reduced by up to 38 % depending on the pesticide, an indication that recovery of the snails depends on the pesticide. From the results we suggest that where pesticides need to be applied more than once, a time gap between applications should be allowed to enable non-target organisms in soil and aquatic systems to recover from effects of previous applications thereby ensuring the good health of non-target organisms.en_US
dc.description.sponsorshipFederation of African Societies of Biochemistry and Molecular Biologyen_US
dc.identifier.urihttp://196.220.97.103:4000/handle/123456789/256
dc.language.isoenen_US
dc.rights.licenseThis article was downloaded from NUST Institutional repository, and is made available under the terms and conditions as set out in the Institutional Repository Policy.en_US
dc.subjectCholineen_US
dc.subjectNon-cholinesteraseen_US
dc.subjectSnailen_US
dc.subjectPesticidesen_US
dc.titleRecovery Of Choline And Non-Cholinesterase Activity Of The Freshwater Snail Lymnaea Natalensis Following Exposure To Six Pesticidesen_US
dc.typeWorking Paperen_US
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