Improving Shepherd's Length Composition Analysis (SLCA) method for growth parameter estimations

Pauly, D. and Arreguin-Sanchez, F. (1995) Improving Shepherd's Length Composition Analysis (SLCA) method for growth parameter estimations. Naga, the ICLARM Quarterly, 18(4), pp. 31-33.

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Official URL: http://www.worldfishcenter.org/Naga/na_1469.pdf

Abstract

Shepherd's "weekly parametric" method for estimating the parameter L sub( infinity ) and K of the von Bertalanffy growth function from length-frequency data often fails to converge, and usually overestimates K. It is shown that this is due to overcounting of the frequencies associated with large, slow growing fish, and that both of these problems can be completely overcome by a simple change in the way the scoring function is formulated.

Item Type: Article
Title: Improving Shepherd's Length Composition Analysis (SLCA) method for growth parameter estimations
Personal Creator/Author:
CreatorsEmail
Pauly, D.
Arreguin-Sanchez, F.
Journal or Publication Title: Naga, the ICLARM Quarterly
Volume: 18
Number: 4
Page Range: pp. 31-33
Date: 1995
ISSN: 0116-290X
Issuing Agency: WorldFish Center
Uncontrolled Keywords: Length; Frequency analysis; Methodology; Growth; Approximation; Fish; Shepherd's Length Composition Analysis
Subjects: Fisheries
Item ID: 9421
Depositing User: Mr William Ko
Date Deposited: 11 Oct 2012 04:38
Last Modified: 11 Oct 2012 04:38
URI: http://aquaticcommons.org/id/eprint/9421

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