| Specimen ID | 116441 |
| Group | Mollusks-Bivalves |
| Genus | Dreissena |
| Species | polymorpha |
| Common Name | zebra mussel |
| Country | Canada |
| State | ON |
| County | Muskoka |
| Locality | Lake Rosseau, north of Gavenhurst, Ontario |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lake Muskoka-Frontal Lake Huron |
| HUC8 Number | 04220002 |
| HUC10 Name | Lake Muskoka-Frontal Lake Huron |
| HUC10 Number | 0422000200 |
| HUC12 Name | Lake Muskoka-Frontal Lake Huron |
| HUC12 Number | 042200020000 |
| Map | |
| Collection Day | 24 |
| Collection Month | 5 |
| Collection Year | 1991 |
| Year Accuracy | Actual |
| Potential Pathway | shipping |
| Status | established |
| Record Type | Specimen |
| Disposal | formalin |
| Museum Cat Number | Muskoka LFAU PPR8-05/24/91 |
| Verifier | MAWSA Inc., 381 Elmira Road, Guelph, Ont. N1K 1H3 |
| Freshwater/Marine | Freshwater |
| Year Class | veliger |
| Size | 90 microns |
