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Titolo:
SURVIVAL OF BLUEGILL AND THEIR BEHAVIORAL-RESPONSES DURING CONTINUOUSAND PULSED EXPOSURES TO ESFENVALERATE, A PYRETHROID INSECTICIDE
Autore:
LITTLE EE; DWYER FJ; FAIRCHILD JF; DELONAY AJ; ZAJICEK JL;
Indirizzi:
US FISH & WILDLIFE SERV,NATL FISHERIES CONTAMINANT RES CTR,4200 NEW HAVEN RD COLUMBIA MO 65201
Titolo Testata:
Environmental toxicology and chemistry
fascicolo: 5, volume: 12, anno: 1993,
pagine: 871 - 878
SICI:
0730-7268(1993)12:5<871:SOBATB>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
RAINBOW-TROUT SALMO; LEPOMIS-MACROCHIRUS; TOXICITY; FENVALERATE; TOXICOKINETICS; GAIRDNERI; ANIMALS; FIELD; FISH;
Keywords:
BEHAVIORAL TOXICOLOGY; ESFENVALERATE; PULSED EXPOSURE; BLUEGILL;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
E.E. Little et al., "SURVIVAL OF BLUEGILL AND THEIR BEHAVIORAL-RESPONSES DURING CONTINUOUSAND PULSED EXPOSURES TO ESFENVALERATE, A PYRETHROID INSECTICIDE", Environmental toxicology and chemistry, 12(5), 1993, pp. 871-878

Abstract

Juvenile bluegill (Lepomis macrochirus) were exposed to the pyrethroid insecticide esfenvalerate no-3-phenoxybenzyl-(S)-2-(4-chlorophenyl)-3-methyl butyrate], continuously for 90 d and for six 11-h pulses. No bluegill survived continuous exposure to esfenvalerate at 0.200 mug/L for 30 d or 0. 100 mug/L for 60 d. The lowest-observable-effect concentration (LOEC) for survival in a 90-d continuous exposure of esfenvalerate was 0.025 mug/L. In comparison, no mortality occurred among fish exposed to pulsed doses of up to 0.200 mug/L. Behavioral responses, including gross body tremors, were highly sensitive indicators of toxicity among pulse-exposed fish, with symptoms appearing within 4 h of exposure to concentrations as low as 0.025 mug/L. Similar behavioral responses were observed after continuous exposure to 0.025 mug/L esfenvalerate. Behavioral responses were observed at concentrations an order ofmagnitude less than concentrations impacting growth or survival in simulated field studies. These results provide encouraging evidence thatlaboratory studies designed to simulate field exposure conditions canbe predictive of concentrations causing mortality and other adverse effects.

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Documento generato il 25/09/20 alle ore 13:42:10