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JNAFS

01

P.A. Shelton, G.R. Lilly and E. Colbourne

Dept. of Fisheries and Oceans, P. O. Box 5667
St. John's, Newfoundland, Canada A1C 5X1

Source - Journal of Northwest Atlantic Fishery Science, Volume 25: 151-159
ISSN-0250-6408

 

P.A. Shelton, G.R. Lilly and E. Colbourne. 1999. Patterns in Annual Weight Increment for Div. 2J+3KL Cod and Possible Prediction for Stock Projection. J. Northw. Atl. Fish. Sci. 25: 151-159. https://doi.org/10.2960/J.v25.a14

 

Abstract

Sample body weight-at-age data for NAFO Divisions 2J+3KL cod (Gadus morhua) from research vessel surveys were examined. Considerable variability in annual weight increment was found. A general linear model containing division and age effects explained 36% of the variance in the logarithm of annual weight increment. The residuals from this model showed a temporal pattern which appears to correspond to changes in the area of the cold intermediate layer (<0°C), an indicator of the amount of cold water on the shelf. Including the area of the CIL resulted in a model which explained 41% of the variability in weight increments. This model predicted weight increment data not included in the fitting reasonably well. Consideration is given to whether a predictive model based on this relationship could be useful in stock projections.

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Language - English
Publisher - Northwest Atlantic Fisheries Organization (NAFO), Dartmouth, N.S., Canada
Publication Date - October 1999
Publication Type - Journal Article

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Citation: P.A. Shelton, G.R. Lilly and E. Colbourne. 1999. Patterns in Annual Weight Increment for Div. 2J+3KL Cod and Possible Prediction for Stock Projection. J. Northw. Atl. Fish. Sci. 25: 151-159. https://doi.org/10.2960/J.v25.a14

Posted in: Volume 25 - 1999
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