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A comparison of two techniques to discriminate continental origin of Atlantic salmon (Salmo salar L.) off West Greenland

Published online by Cambridge University Press:  15 April 1992

David Reddin ,
Hélène de Pontual  and
Patrick Prouzet
David Reddin
Affiliation:
Science Branch, Department of Fisheries and Oceans, PO Box 5667, St. John's, Newfoundland A1C5X1, Canada
Hélène de Pontual
Affiliation:
Institut Français de Recherche pour l'Exploitation de la Mer, Centre de Brest, DRV/PA, BP 337, 29273 Brest Cedex, France
Patrick Prouzet
Affiliation:
Institut français de Recherche pour l'Exploitation de la Mer, Station d'Hydrobiologie INRA, BP 3, 64310, Saint-Pée-sur-Nivelle, France
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Abstract

Two techniques of stock discrimination both utilizing scales, i. e. termed as classical technique and shape analysis, are compared for discriminating between North American and European Atlantic salmon (Salmo salar L.) caught off West Greenland. Three scales from each of 60 salmon were analyzed: 30 from North American and 30 from European-origin salmon collected from home rivers in 1982. The best results indicated misclassification and error rates of 0% for shape analysis and 5.0% and ± 1.7%, respectively, for the classical technique. A nested ANOVA indicated that variation was greater between scales of salmon of North American and European origin than from several scales from the same salmon. It was concluded that shape analysis with computer-aided devices may be superior to the classical technique and it is recommended that it be examined for use at West Greenland.

Keywords

Salmo salarmeristicsshape analysisdiscriminationSalmo salarscalimétrieanalyse de formediscrimination
Type
Research Article
Information
Aquatic Living Resources , Volume 5 , Issue 2 , April 1992 , pp. 81 - 88
Copyright
© IFREMER-Gauthier-Villars, 1992

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