Angler harvest and mortality of Esox masquinongy in Pigeon and Sturgeon lakes, Ontario

In 1961 a creel census was begun on Pigeon Lake in south-central Ontario to assess the contribution to the fishery of maskinonge transplanted from nearby Nogies Creek Fish Sanctuary. A correction being made for a tag loss of 58%, it was estimated that 30% of the transplanted fish had appeared in the anglers’ catch. The mean catch of maskinonge from Pigeon Lake for the seasons of 1961–65 was estimated to be 1318 fish per year. About 4% of the annual catch from Pigeon Lake was attributed directly to fish transplanted from Nogies Creek.From a catch curve the rate of total mortality of Pigeon Lake maskinonge age V or older was estimated to be 43% per year. Partitioning this into mortality due to fishing and mortality from other causes yielded estimates of 24.5% for each of these components.