Acute toxicity of isomers of the pyrethroid insecticide deltamethrin and its major degradation products to Daphnia magna / by K.E. Day, R. James Maguire. : En13-5/89-161E-PDF
"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.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.873840&sl=1
| Ministère/Organisme | Canada. Environment Canada. National Water Research Institute (Canada). Rivers Research Branch. Canada Centre for Inland Waters. |
|---|---|
| Titre | Acute toxicity of isomers of the pyrethroid insecticide deltamethrin and its major degradation products to Daphnia magna / by K.E. Day, R. James Maguire. |
| Titre de la série | NWRI contribution ; 89-161 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | "RRB 89-84." Title from cover. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. Includes abstract and management perspective in English and French. |
| Information sur la publication | Burlington, Ontario : National Water Research Institute, Rivers Research Branch, Canada Centre for Inland Waters, November 1989. |
| Auteur / Contributeur | Day, Kristin E. (Kristin Elizabeth)author. Maguire, R. J. (R. James)author. |
| Description | 1 online resource (11 pages, 2 unnumbered pages). |
| Numéro de catalogue |
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| Descripteurs | Insecticides Toxicology Aquatic wildlife |