Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1897/04-256R1.1 |
| Document | Shareable Link |
| Title (Primary) | Acute contamination with esfenvalerate and food limitation: chronic effects on the mayfly, Cloeon dipterum |
| Author | Beketov, M.A.; Liess, M. |
| Source Titel | Environmental Toxicology and Chemistry |
| Year | 2005 |
| Department | OEKOTOX |
| Volume | 24 |
| Issue | 5 |
| Page From | 1281 |
| Page To | 1286 |
| Language | englisch |
| Keywords | Esfenvalerate; Cloeon dipterum; Population level; Compensation; Intraspecific competition |
| Abstract | Results of environmental risk assessments based merely on toxic effects of contaminants at the individual level, without consideration of population-level effects, may be questionable. The aim of the present study was to investigate how limited food resources, resulting in intraspecific competition, could interact with the chronic effect of short-term contamination with the insecticide esfenvalerate. Larvae of the mayfly, Cloeon dipterum, were exposed to esfenvalerate (0.001–100 μg/L) for 1 h and then transferred to indoor microcosms containing insecticide-free water, where they were maintained at various food levels until emergence. The results showed that short-term exposure to 10 or 100 μg/L resulted in acute mortality. Chronic effects on survival occurred at concentrations up to three orders of magnitude lower than that causing the acute effect (0.01 μg/L). Food limitation increased effects on organisms during medium-term observation (8–15 d), but assessment of long-term survival rates suggested that the chronic effects of low insecticide concentrations could be compensated for, at least regarding some endpoints. The authors assume that in limited-food conditions, lethal and sublethal effects reduced competition between individuals, resulting in significantly increased final survival. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=3176 |
| Beketov, M.A., Liess, M. (2005): Acute contamination with esfenvalerate and food limitation: chronic effects on the mayfly, Cloeon dipterum Environ. Toxicol. Chem. 24 (5), 1281 - 1286 10.1897/04-256R1.1 |
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