Corrigendum: Differences in predicted catch ...

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I correct three related typographical errors in the introduction of this paper, which were brought to my attention by. T. Garrison (University of Washington, School ...
1631

CORRIGENDUM / RECTIFICATIF

Corrigendum: Differences in predicted catch composition between two widely used catch equation formulations Trevor A. Branch

Ref.: Ref: Can. J. Fish. Aquat. Sci. 66: 126–132, 2009.

I correct three related typographical errors in the introduction of this paper, which were brought to my attention by T. Garrison (University of Washington, School of Aquatic and Fishery Sciences, Seattle, WA 98195, USA). In each case the e–X term should have been 1 – e–X: Eq: 2: Original :

Eq: 4: Original : Ca;t Eq: 6: Original :

F Nt eMF MþF Sa Ft ¼ Na;t eMSa Ft M þ Sa Ft Sa Ft ¼ Aa Na;t eMSa Ft M þ Sa Ft

Ct ¼

Ca;t

F Nt ð1  eMF Þ MþF Sa Ft ¼ Na;t ð1  eMSa Ft Þ M þ Sa Ft Sa Ft ¼ Aa Na;t ð1  eMSa Ft Þ M þ Sa Ft

Corrected :

Ct ¼

Corrected :

Ca;t

Corrected :

Ca;t

In these equations, t refers to time, a refers to age group, M is instantaneous natural mortality rate, N is fish abundance, F is instantaneous fishing mortality rate, C is observed catch, S is gear selectivity, and A is availability to the fishing gear.

Received 8 July 2009. Accepted 8 July 2009. Published on the NRC Research Press Web site at cjfas.nrc.ca on 9 September 2009. J21301 T.A. Branch. School of Aquatic and Fishery Sciences, Box 355020, University of Washington, Seattle, WA 98195, USA (e-mail: [email protected]). Can. J. Fish. Aquat. Sci. 66: 1631 (2009)

doi:10.1139/F09-107

Published by NRC Research Press