Comparison of two methods for distinguishing wild from hatchery-reared salmon (Salmo salar Linnaeus, 1758) in the Baltic Sea
A discriminant function based on scale characters was used for distinguishing wild and hatchery-reared Baltic salmon. The function was based on the following three variables: the width of the first freshwater annual zone; the maximum number of circuli per year in the freshwater zone; and the mean di...
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Oxford University Press
1998
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fthighwire:oai:open-archive.highwire.org:icesjms:55/6/981 2023-05-15T18:09:50+02:00 Comparison of two methods for distinguishing wild from hatchery-reared salmon (Salmo salar Linnaeus, 1758) in the Baltic Sea Hiilivirta, P. Ikonen, E. Lappalainen, J. 1998-12-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/55/6/981 https://doi.org/10.1006/jmsc.1998.0370 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/55/6/981 http://dx.doi.org/10.1006/jmsc.1998.0370 Copyright (C) 1998, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 1998 fthighwire https://doi.org/10.1006/jmsc.1998.0370 2013-05-27T06:02:13Z A discriminant function based on scale characters was used for distinguishing wild and hatchery-reared Baltic salmon. The function was based on the following three variables: the width of the first freshwater annual zone; the maximum number of circuli per year in the freshwater zone; and the mean distance between circuli in the freshwater zone. Using this function, it was possible to correctly classify 92.63% of fish of known origin. Use of the so-called visual method resulted in a 100% correct classification of the same sample. When the two methods were compared using a scale sample of unknown origin, the results showed that the two methods classified 219 and 257 fish the same. The suitability of the methods for stock identification and the discrepancies between them are discussed. Text Salmo salar HighWire Press (Stanford University) ICES Journal of Marine Science 55 6 981 986 |
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HighWire Press (Stanford University) |
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English |
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Articles |
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Articles Hiilivirta, P. Ikonen, E. Lappalainen, J. Comparison of two methods for distinguishing wild from hatchery-reared salmon (Salmo salar Linnaeus, 1758) in the Baltic Sea |
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Articles |
description |
A discriminant function based on scale characters was used for distinguishing wild and hatchery-reared Baltic salmon. The function was based on the following three variables: the width of the first freshwater annual zone; the maximum number of circuli per year in the freshwater zone; and the mean distance between circuli in the freshwater zone. Using this function, it was possible to correctly classify 92.63% of fish of known origin. Use of the so-called visual method resulted in a 100% correct classification of the same sample. When the two methods were compared using a scale sample of unknown origin, the results showed that the two methods classified 219 and 257 fish the same. The suitability of the methods for stock identification and the discrepancies between them are discussed. |
format |
Text |
author |
Hiilivirta, P. Ikonen, E. Lappalainen, J. |
author_facet |
Hiilivirta, P. Ikonen, E. Lappalainen, J. |
author_sort |
Hiilivirta, P. |
title |
Comparison of two methods for distinguishing wild from hatchery-reared salmon (Salmo salar Linnaeus, 1758) in the Baltic Sea |
title_short |
Comparison of two methods for distinguishing wild from hatchery-reared salmon (Salmo salar Linnaeus, 1758) in the Baltic Sea |
title_full |
Comparison of two methods for distinguishing wild from hatchery-reared salmon (Salmo salar Linnaeus, 1758) in the Baltic Sea |
title_fullStr |
Comparison of two methods for distinguishing wild from hatchery-reared salmon (Salmo salar Linnaeus, 1758) in the Baltic Sea |
title_full_unstemmed |
Comparison of two methods for distinguishing wild from hatchery-reared salmon (Salmo salar Linnaeus, 1758) in the Baltic Sea |
title_sort |
comparison of two methods for distinguishing wild from hatchery-reared salmon (salmo salar linnaeus, 1758) in the baltic sea |
publisher |
Oxford University Press |
publishDate |
1998 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/55/6/981 https://doi.org/10.1006/jmsc.1998.0370 |
genre |
Salmo salar |
genre_facet |
Salmo salar |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/55/6/981 http://dx.doi.org/10.1006/jmsc.1998.0370 |
op_rights |
Copyright (C) 1998, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1006/jmsc.1998.0370 |
container_title |
ICES Journal of Marine Science |
container_volume |
55 |
container_issue |
6 |
container_start_page |
981 |
op_container_end_page |
986 |
_version_ |
1766182514958794752 |