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Statements

Subject Item
n2:RIV%2F60076658%3A12520%2F13%3A43886644%21RIV14-MSM-12520___
rdf:type
skos:Concept n3:Vysledek
dcterms:description
OBJECTIVES: Crustacea are at high risk of toxic effects of agricultural pesticides. Currently, many questions regarding the toxicity of triazine herbicides to crayfish remain unresolved. The aim of this research was to evaluate the acute toxicity of atrazine, hexazinone, metribuzine, prometryne, simazine, and terbutryne to juvenile signal crayfish (Pacifastacus leniusculus). DESIGN: Acute toxicity tests were performed in accordance with standardized guidelines for testing of chemicals, OECD no. 203, using a semistatic test system. Signal crayfish juveniles (n=672) of 49.0-81.5 mg weight and 12.8-16.0 mm total length were used for the bioassay. Mortalities were recorded daily to 96 h. Each pesticide was tested at concentrations of 1, 10, 40, 70, and 100 mg.l(-1). Percent mortalities were analyzed by linear regression, and median lethal concentration (LC50) values were computed using probit analysis EKO-TOX 5.2 software. RESULTS: 96hLC50 values for juvenile signal crayfish were 12.1 mg.l(-1) for atrazine, 13.9 mg.l(-1) for terbutryne, 14.4 mg.l(-1) for prometryne, 19.5 mg.l(-1) for hexazinone, 30.6 mg.l(-1) for metribuzine, and 77.9 mg.l(-1) for simazine. Atrazine showed the greatest toxicity to signal crayfish. CONCLUSIONS: The present study demonstrated that triazines are toxic to signal crayfish. Signal crayfish is more sensitive than the fish for atrazine, hexazine, metribuzine, and for these triazines signal crayfish can be used as a bio-indicator of environmental contamination. OBJECTIVES: Crustacea are at high risk of toxic effects of agricultural pesticides. Currently, many questions regarding the toxicity of triazine herbicides to crayfish remain unresolved. The aim of this research was to evaluate the acute toxicity of atrazine, hexazinone, metribuzine, prometryne, simazine, and terbutryne to juvenile signal crayfish (Pacifastacus leniusculus). DESIGN: Acute toxicity tests were performed in accordance with standardized guidelines for testing of chemicals, OECD no. 203, using a semistatic test system. Signal crayfish juveniles (n=672) of 49.0-81.5 mg weight and 12.8-16.0 mm total length were used for the bioassay. Mortalities were recorded daily to 96 h. Each pesticide was tested at concentrations of 1, 10, 40, 70, and 100 mg.l(-1). Percent mortalities were analyzed by linear regression, and median lethal concentration (LC50) values were computed using probit analysis EKO-TOX 5.2 software. RESULTS: 96hLC50 values for juvenile signal crayfish were 12.1 mg.l(-1) for atrazine, 13.9 mg.l(-1) for terbutryne, 14.4 mg.l(-1) for prometryne, 19.5 mg.l(-1) for hexazinone, 30.6 mg.l(-1) for metribuzine, and 77.9 mg.l(-1) for simazine. Atrazine showed the greatest toxicity to signal crayfish. CONCLUSIONS: The present study demonstrated that triazines are toxic to signal crayfish. Signal crayfish is more sensitive than the fish for atrazine, hexazine, metribuzine, and for these triazines signal crayfish can be used as a bio-indicator of environmental contamination.
dcterms:title
Acute toxicity of triazine pesticides to juvenile signal crayfish (Pacifastacus leniusculus) Acute toxicity of triazine pesticides to juvenile signal crayfish (Pacifastacus leniusculus)
skos:prefLabel
Acute toxicity of triazine pesticides to juvenile signal crayfish (Pacifastacus leniusculus) Acute toxicity of triazine pesticides to juvenile signal crayfish (Pacifastacus leniusculus)
skos:notation
RIV/60076658:12520/13:43886644!RIV14-MSM-12520___
n3:predkladatel
n4:orjk%3A12520
n5:aktivita
n18:S n18:P
n5:aktivity
P(ED2.1.00/01.0024), P(EE2.3.20.0024), S
n5:cisloPeriodika
Neuveden
n5:dodaniDat
n16:2014
n5:domaciTvurceVysledku
n10:2927527 n10:2565676 n10:5063949
n5:druhVysledku
n19:J
n5:duvernostUdaju
n8:S
n5:entitaPredkladatele
n13:predkladatel
n5:idSjednocenehoVysledku
59437
n5:idVysledku
RIV/60076658:12520/13:43886644
n5:jazykVysledku
n15:eng
n5:klicovaSlova
terbutryne; simazine; prometryne; metribuzine; hexazinone; atrazine
n5:klicoveSlovo
n12:metribuzine n12:hexazinone n12:prometryne n12:simazine n12:atrazine n12:terbutryne
n5:kodStatuVydavatele
SE - Švédské království
n5:kontrolniKodProRIV
[4DA0FACA6FF5]
n5:nazevZdroje
Neuroendocrinology Letters
n5:obor
n6:GL
n5:pocetDomacichTvurcuVysledku
3
n5:pocetTvurcuVysledku
3
n5:projekt
n11:EE2.3.20.0024 n11:ED2.1.00%2F01.0024
n5:rokUplatneniVysledku
n16:2013
n5:svazekPeriodika
34
n5:tvurceVysledku
Stará, Alžběta Kouba, Antonín Velíšek, Josef
n5:wos
000330901000005
s:issn
0172-780X
s:numberOfPages
6
n17:organizacniJednotka
12520