| Impact ID | 5784 |
| Impact Type | Disease/Parasite/Toxicity |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | There have been reports of the tapeworm Ligula intestinalis preferentially parasitizing bleak (Alburnus alburnus) in the River Thames. |
| Reference | 35146 |
| Cost | |
| Location | River Thames, England |