| Impact ID | 8582 |
| Impact Type | Disease/Parasite/Toxicity |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Great Lakes native organisms consumed by Schmidtea polychroa include tubificids, gastropods, amphipods, and isopods. |
| Reference | 16804 |
| Cost | |
| Location | Lake Ontario, Toronto Harbour, Canada |