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Project properties |
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| Title | Single species test with the sediment-rooted macrophyte Myriophyllum spicatum and the fungicide Tebuconazole (thesis or internship) |
| Group | Aquatic Ecology and Water Quality Management Group |
| Project type | thesis |
| Credits | variable |
| Supervisor(s) | Gertie Arts (WENR)
Edwin Peeters (WU) |
| Examiner(s) | Edwin Peeters |
| Contact info | gertie.arts@wur.nl
edwin.peeters@wur.nl |
| Begin date | 2023/05/15 |
| End date | 2023/11/01 |
| Description | Since 2010, it is known that dicot macrophytes, such as Myriophyllum spicatum, can significantly be more sensitive to herbicides with special mode of actions (MoA) such as growth regulators (GR) than the standard monocot test species Lemna sp. For fungicides such as tebuconazole (TBZ) with indications for a MoA as a GR (Rogach et al., 2022), we hypothesized that dicot macrophytes are more sensitive than monocots. Therefore, 14 d in-situ macrophyte tests within a comprehensive mesocosm study at the artificial stream and pond facility of the German Environment Agency were performed. The goal of this research was to improve the risk assessment (RA) of fungicides with herbicidal MoA for better aquatic ecosystem/macrophyte protection. In the mesocosm study, dicots were most sensitive. This is consistent with the MoA of TBZ and could be an indication that laboratory tests with Myriophyllum spicatum may also be more sensitive than those with Lemna sp. However, a first-tier test with Myriophyllum spicatum is missing. The topic of this research is to perform a laboratory test with the sediment-rooted Myriophyllum spicatum in a climate room following OECD guideline 239. The research includes the preparation of an experimental protocol, the experimental set-up, the performance of the laboratory test, monitoring macrophyte endpoints and reporting the results. |
| Used skills | |
| Requirements | affinity with plant experiments |