| Impact ID | 3799 |
| Impact Type | Disease/Parasite/Toxicity |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Echinogammarus ischnus has been found to host a parasitic water mold (oomycete) in the St. Lawrence River. This oomycete also parasitizes the Great Lakes native amphipod Gammarus fasciatus, but the effects are less severe. |
| Reference | 24598 |
| Cost | |
| Location | St. Lawrence River |