Comparative sensitivity of three life stages of the tropical mysid, Metamysidopsis insularis to six toxicants
| Autor: | Najila Elias-Samlalsingh, Azad Mohammed, Trina Halfhide |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Toxicological & Environmental Chemistry. 91:1331-1337 |
| ISSN: | 1029-0486 0277-2248 |
| DOI: | 10.1080/02772240802608038 |
| Popis: | Test protocols citing mysids as a standard test species often recommend juveniles (48 h) as the most appropriate life stage for testing. Acute toxicity tests were conducted with six standard toxicants, with three life stages of Metamysidopsis insularis; juveniles (48 h), late juveniles (7–12 days) and adults (>13 days), to determine whether there were significant differences in the sensitivity between life stages. Three of the compounds tested (sodium dodecyl sulphate, potassium dichromate, and potassium chloride) showed a significantly higher 96 h-LC50 for the adults when compared to the juveniles and late juveniles. Four of the compounds tested showed significantly higher 24 h- and 48h-LC50 for the adults when compared to both the late juveniles and juveniles. Twenty-four hour-LC50 values for juveniles were also significantly higher than the 48 and 96 h values. However, for the late juveniles and adults this was only true of a few compounds. Further, the 48 and 96 h values were statistically similar. Th... |
| Databáze: | OpenAIRE |
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