Bioaccumulation of mercury and its effect on protein metabolism of the water hyacinth weevil Neochetina eichhornae (Warner)

Research was initiated to study the bioaccumulation of mercury through the food chain in the water hyacinth weevil, Neochetina eichhornae, and its impact on protein metabolism. A concentration-dependent accumulation of Hg in water hyacinth leaves was documented over a one-week period. At the 25 ppm...

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Veröffentlicht in:	Bulletin of environmental contamination and toxicology 1990-08, Vol.45 (2), p.294-298
Hauptverfasser:	SABER HUSSAIN, M, KAISER JAMIL
Format:	Artikel
Sprache:	eng
Schlagworte:	560300 - Chemicals Metabolism & Toxicology actividad enzimatica activite enzymatique Alanine Transaminase - metabolism Amino Acids - metabolism AMINOTRANSFERASES Animal, plant and microbial ecology Animals Applied ecology AQUATIC ORGANISMS Aspartate Aminotransferases - metabolism BIOCHEMISTRY BIOLOGICAL ACCUMULATION Biological and medical sciences biological control BIOLOGICAL EFFECTS CHEMISTRY CHLORIDES CHLORINE COMPOUNDS Coleoptera control biologico Curculionidae Ecotoxicology, biological effects of pollution Effects of pollution and side effects of pesticides on plants and fungi eichhornia ENZYMES enzymic activity FOOD CHAINS Fundamental and applied biological sciences. Psychology HALIDES HALOGEN COMPOUNDS Insecta - metabolism LILIOPSIDA lutte biologique MAGNOLIOPHYTA mercure mercurio mercury Mercury - metabolism MERCURY CHLORIDES MERCURY COMPOUNDS MERCURY HALIDES METABOLISM metabolisme des proteines metabolismo de proteinas neochetina NITROGEN TRANSFERASES ORGANIC COMPOUNDS PLANTS protein metabolism PROTEINS Proteins - metabolism RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT TRANSFERASES WATER HYACINTHS Water Pollutants - metabolism Water Pollutants, Chemical - analysis Water Pollutants, Chemical - metabolism
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Beschreibung
Zusammenfassung:	Research was initiated to study the bioaccumulation of mercury through the food chain in the water hyacinth weevil, Neochetina eichhornae, and its impact on protein metabolism. A concentration-dependent accumulation of Hg in water hyacinth leaves was documented over a one-week period. At the 25 ppm concentration, the total Hg accumulated in insects was 15.16 mu g/100 mg of leaves in males. The feeding of insects declined as the Hg levels increased in the plants. A decrease in total protein was related to the concentration of Hg adsorbed by the insects. The results also indicate an increase in free amino acids in Hg-contaminated weevils compared with controls.
ISSN:	0007-4861 1432-0800
DOI:	10.1007/BF01700198