| Impact ID | 6133 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Anguillicola crassus larvae were detected in ruffes regurgitated by cormorants. The ruffe is a major component of cormorant diets. It was not clear whether cormorants select for infected fish. |
| Reference | 40953 |
| Cost | |
| Location | Vistula Lagoon, Poland |