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| 02618cam 2200433zi 4500 |
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| 001 | 9.873840 |
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| 003 | CaOODSP |
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| 005 | 20221107164029 |
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| 006 | m o d f |
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| 007 | cr ||||||||||| |
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| 008 | 190529e198911##onc #ob f000 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 041 | |aeng|bfre |
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| 043 | |an-cn--- |
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| 086 | 1 |aEn13-5/89-161E-PDF |
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| 100 | 1 |aDay, Kristin E. |q(Kristin Elizabeth)|eauthor. |
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| 245 | 10|aAcute toxicity of isomers of the pyrethroid insecticide deltamethrin and its major degradation products to Daphnia magna / |cby K.E. Day, R. James Maguire. |
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| 264 | 1|aBurlington, Ontario : |bNational Water Research Institute, Rivers Research Branch, Canada Centre for Inland Waters, |cNovember 1989. |
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| 300 | |a1 online resource (11 pages, 2 unnumbered pages). |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 490 | 1 |aNWRI contribution ; |v89-161 |
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| 500 | |a"RRB 89-84." |
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| 500 | |aTitle from cover. |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 504 | |aIncludes bibliographical references. |
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| 520 | 3 |a"The acute toxicities (4-h, 24-h and 48-h) of eight stereoisomers and four major breakdown products of deltamethrin to D. magna were determined. Parent deltamethrin (isomer 1) was the most toxic, with EC50 values in the range 0.05-1.75 ug/L, concentrations which have been observed in the surface microlayer and subsurface water in field studies. The other three isomers (2-, 3- and 4-deltamethrin) were two- to tenfold less toxic than 1-deltamethrin. Isomers 1', 2', 3' and 4' plus the four breakdown product studied displayed no significant toxicity. Since 1-deltamethrin can be converted in natural water to 2', 3- and 4'- deltamethrin, and since 3-deltamethrin is toxic to D. magna, this isomerization is only a partial detoxification step as far as some aquatic organisms are concerned"--Abstract. |
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| 546 | |aIncludes abstract and management perspective in English and French. |
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| 692 | 07|2gccst|aInsecticides |
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| 692 | 07|2gccst|aToxicology |
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| 692 | 07|2gccst|aAquatic wildlife |
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| 700 | 1 |aMaguire, R. J. |q(R. James)|eauthor. |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aNational Water Research Institute (Canada). |bRivers Research Branch. |
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| 710 | 2 |aCanada Centre for Inland Waters. |
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| 830 | #0|aNWRI contribution ;|v89-161.|w(CaOODSP)9.844121 |
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| 856 | 40|qPDF|s1,013 KB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-89-161-eng.pdf |
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