Research Document - 1999/098
A Model for Managing Exploitation of Brook Trout (Salvelinus fontinalis Mitchill) in Indian Bay Brook, Newfoundland.
By N.P. Lester, R.M Korver, M.C. vanZyll de Jong, W. Norris and B.L. Wicks
Abstract
We used creel and index fishing data from ponds in Indian Bay Newfoundland to construct a model for managing the exploitation of brook trout (Salvelinus fontinalis). Our model describes the expected relationship between angling effort (angler-hr/ha) and brook trout yield (kg/ha). It predicts a maximum yield of approximately 0.4 kg/ha at a fishing effort of 3 angler-hrs/ha and extinction of the fish population at 8 angler-hrs/ha. Maintenance of a high quality fishery calls for regulations that restrict fishing effort or reduce its potential impact. We used a dynamic simulation model (calibrated for Indian Bay brook trout) to compare the effectiveness of various types of management regulations (e.g. creel limits, size-based restrictions on harvest). Our simulation results indicate that creel limits will not prevent over-fishing and that size-based management is needed to offer a sustainable high quality fishery.
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