Kelthane residues in tissues of the tropical penaeid prawn, Metapenaeus monoceros (Fabricius), under sublethal chronic exposure--a monitoring study.
Monitoring the biodegradation and bioaccumulation of kelthane residues were undertaken during reclamation through oxygen consumption (respiration) and target enzyme activity assays. Even after 30 days of reclamation, non-recovery in respiration and target enzyme assays revealed the accumulation of kelthane as a residue in tissues. Thin-layer chromatography demonstrated the presence of kelthane residues as spots in tissue extracts of midgut gland and muscle after a 30-day recovery period. This confirms that kelthane is a persistent insecticide of low biodegradability and capable of accumulating in tissues as residues even at sublethal concentration under chronic exposure.
Surendranath
P
P
Department of Marine Zoology, S.V. University, Kavali, India.
Rao
K V
KV
D000818:Animals; D017301:Ca(2+) Mg(2+)-ATPase / Q000037:antagonists & inhibitors / Q000378:metabolism; D002855:Chromatography, Thin Layer; D004010:Dicofol / Q000493:pharmacokinetics*; D004064:Digestive System / Q000378:metabolism; D004781:Environmental Exposure; D004784:Environmental Monitoring; D005880:Gills / Q000378:metabolism; D009132:Muscles / Q000378:metabolism; D010101:Oxygen Consumption / Q000187:drug effects; D033561:Penaeidae / Q000378:metabolism*; D010573:Pesticide Residues / Q000032:analysis / Q000493:pharmacokinetics*; D013997:Time Factors
D010573:Pesticide Residues; D017301:Ca(2+) Mg(2+)-ATPase; D004010:Dicofol