Are Age-Structured Models Appropriate for Catch-Effort Data?
- 1 June 1985
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Fisheries and Aquatic Sciences
- Vol. 42 (6), 1066-1072
- https://doi.org/10.1139/f85-132
Abstract
Simulated data were used to evaluate the performance of schemes for estimating optimum fishing effort using a simple stock-production model and R.B. Deriso''s age-structured model. Even when the data are generated using Deriso''s model, the simpler production model generally gives as good or better estimates for the optimal effort. The only exception to this result is when data are provided with unrealistically large contrasts in effort and catch per unit effort over time. Simple production models should often be used in stock assessments based on catch/effort data, even when more realistic and structurally correct models are available to the analyst; the best choice depends on how much contrast has occurred in the historical effort and catch per unit effort data, rather than on prior knowledge about which model structure is biologically more realistic.This publication has 4 references indexed in Scilit:
- Adaptive Probing Strategies for Age-Structured Fish StocksCanadian Journal of Fisheries and Aquatic Sciences, 1983
- Measurement Errors and Uncertainty in Parameter Estimates for Stock and RecruitmentCanadian Journal of Fisheries and Aquatic Sciences, 1981
- Estimation of Mortality Rates in Fish PopulationsTransactions of the American Fisheries Society, 1980
- Harvesting Strategies and Parameter Estimation for an Age-Structured ModelCanadian Journal of Fisheries and Aquatic Sciences, 1980