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Titolo:
ACUTE AND CHRONIC EFFECTS OF 4 COMMERCIAL HERBICIDE FORMULATIONS ON CERIODAPHNIA-DUBIA
Autore:
ORT MP; FAIRCHILD JF; FINGER SE;
Indirizzi:
NATL BIOL SURVEY,NATL FISHERIES CONTAMINANT RES CTR,DEPT INTERIORS,4200 NEW HAVEN RD COLUMBIA MO 65201
Titolo Testata:
Archives of environmental contamination and toxicology
fascicolo: 1, volume: 27, anno: 1994,
pagine: 103 - 106
SICI:
0090-4341(1994)27:1<103:AACEO4>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
TOXICITY TEST; ATRAZINE; COMMUNITIES; PESTICIDES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
M.P. Ort et al., "ACUTE AND CHRONIC EFFECTS OF 4 COMMERCIAL HERBICIDE FORMULATIONS ON CERIODAPHNIA-DUBIA", Archives of environmental contamination and toxicology, 27(1), 1994, pp. 103-106

Abstract

Toxicity tests with Ceriodaphnia dubia were conducted to determine acute (48 h) and chronic (7-day survival and reproduction) effects of four commonly used herbicide formulations. The 48-h LC50s in decreasing order of toxicity were 14.36 mg/L (Micro-Tech(R)), 15.93 mg/L (Bicep(R)), 32.99 mg/L (Extrazine(R)), and 35.36 mg/L (Lexone(R)). Reduced reproduction was detected at concentrations below 48-h LC50s for three ofthe formulations. The 7-day chronic values (ChV) based on reproduction were 17.68 mg/L (Micro-Tech(R)), 8.84 mg/L (Bicep(R)), 17.68 mg/L (Extrazine(R)), and 8.84 mg/L (Lexone(R)). The acute-to-chronic ratios (ACRs) for Micro-Tech(R) (0.81), Bicep(R) (1.80), Extrazine(R) (1.86), and Lexone(R) (4.00) indicate a relatively narrow range between acute and chronic sensitivity in daphnids. A comparison of these response data to environmental concentrations suggests these herbicides are not likely to directly impact invertebrates. Potential impacts on plants and human health should be of primary ecological and regulatory concern.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 10:02:05