Document of bibliographic reference 56743

BibliographicReference record

Type

Bibliographic resource

Type of document

Journal article

BibLvlCode

AS

Title

Estimation of recruitment in catch-at-age models

Abstract

Management strategies must be designed to take into account the uncertainty inherent in fish populations and their assessments. Annual recruitment variation is an important component of uncertainty. Several methods that allow the estimation of annual recruitment in statistical catch-at-age models are described: (a) maximum likelihood estimation with no penalty on the annual recruitment residuals, (b) maximum likelihood estimation with a lognormal penalty on the annual recruitment residuals, (c) importance sampling to numerically approximate the marginal likelihood with a lognormal penalty on the annual recruitment residuals, and (d) full Bayesian integration using Markov Chain Monte Carlo with a lognormal prior on the annual recruitment residuals. Simulation analysis is used to test the performance of these methods. All four methods perform similarly at estimating quantities that are based on averaging or summing multiple estimates of annual recruitment; however the marginal likelihood method (c) and Bayesian integration (d) perform best at estimating annual recruitment and the standard deviation in annual recruitment residuals (σ_R) when catch-at-age data is missing for some years. The ability to estimate σ_R can be important for defining uncertainty when developing management strategies. The methods are applied to a New Zealand snapper (Pagrus auratus) stock and the estimate of σ_R is approximately 0.6.

WebOfScience code

https://www.webofscience.com/wos/woscc/full-record/WOS:000186573400003

Bibliographic citation

Maunder, M.N.; Deriso, R.B. (2003). Estimation of recruitment in catch-at-age models. Can. J. Fish. Aquat. Sci. 60(10): 1204-1216

Topic

Marine

Is peer reviewed

true