Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.envpol.2024.125109 |
Licence  |
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| Title (Primary) | Synergistic interaction between a toxicant and food stress is further exacerbated by temperature |
| Author | Shahid, N.; Siddique, A.
; Liess, M. |
| Source Titel | Environmental Pollution |
| Year | 2024 |
| Department | ETOX |
| Volume | 363, Part 1 |
| Page From | art. 125109 |
| Language | englisch |
| Topic | T9 Healthy Planet |
| Keywords | Pesticide-Effects; Effect-models; Synergism; Environmental Stressors; Combined Stress |
| Abstract | Global biodiversity is declining at an unprecedented rate in response to multiple environmental stressors. Effective biodiversity management requires deeper understanding of the relevant mechanisms behind such ecological impacts. A key challenge is understanding synergistic interactions between multiple stressors and predicting their combined effects. Here we used Daphnia magna to investigate the interaction between a pyrethroid insecticide esfenvalerate and two non-chemical environmental stressors: elevated temperature and food limitation. We hypothesized that the stressors with different modes of action can act synergistically. Our findings showed additive effects of food limitation and elevated temperature (25°C, null model effect addition (EA)) with model deviation ratio (MDR) ranging from 0.7 to 0.9. In contrast, we observed strong synergistic interactions between esfenvalerate and food limitation at 20°C, considerably further amplified at 25°C. Additionally, for all stress combinations, the synergism intensified over time indicating the latent effects of the pesticide. Consequently, multiple stress substantially reduced the lethal concentration of esfenvalerate by a factor of 19 for the LC50 (0.45 to 0.024 μg/L) and 130 for the LC10 (0.096 to 0.00074 μg/L). The stress addition model (SAM) predicted increasing synergistic interactions among stressors with increasing total stress. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=29759 |
| Shahid, N., Siddique, A., Liess, M. (2024): Synergistic interaction between a toxicant and food stress is further exacerbated by temperature Environ. Pollut. 363, Part 1 , art. 125109 10.1016/j.envpol.2024.125109 |
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