Comparisons of Herring Otoliths Using Fourier Series Shape Analysis
Numeric analysis of otolith morphology provides vital information to commercial fisheries concerning the age distribution, racial origin, and, to some extent, the environmental history of fish stocks. Conventional methods used to retrieve these data, though proven to be effective, are time consuming...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1986
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Online Access: | http://dx.doi.org/10.1139/f86-152 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-152 |
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crcansciencepubl:10.1139/f86-152 2024-09-15T18:26:21+00:00 Comparisons of Herring Otoliths Using Fourier Series Shape Analysis Bird, Jerry L. Eppler, Duane T. Checkley Jr., David M. 1986 http://dx.doi.org/10.1139/f86-152 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-152 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 43, issue 6, page 1228-1234 ISSN 0706-652X 1205-7533 journal-article 1986 crcansciencepubl https://doi.org/10.1139/f86-152 2024-08-08T04:13:35Z Numeric analysis of otolith morphology provides vital information to commercial fisheries concerning the age distribution, racial origin, and, to some extent, the environmental history of fish stocks. Conventional methods used to retrieve these data, though proven to be effective, are time consuming, susceptible to ambiguous interpretations, and only semiquantitative. Fourier shape descriptors, when used to analyze outlines of otolith silhouettes, represent a rapid, objective, semiautomated means of obtaining much of this information. Analysis of Fourier shape information derived from otoliths of juvenile and adult Alaskan herring and adult Northwest Atlantic herring show that otolith shape reflects differences in fish age and fish race. The shape of otoliths of juvenile fish are significantly different from those of adult fish. Few shape differences can be found, though, between otoliths from adult fish of different age within the same stock. Distinct differences exist between Atlantic and Alaskan adult otolith shapes. For some stocks, minor shape differences occur between left and right otoliths. Differences in otolith shape arising from sexual dimorphism are not apparent. Article in Journal/Newspaper Northwest Atlantic Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 43 6 1228 1234 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Numeric analysis of otolith morphology provides vital information to commercial fisheries concerning the age distribution, racial origin, and, to some extent, the environmental history of fish stocks. Conventional methods used to retrieve these data, though proven to be effective, are time consuming, susceptible to ambiguous interpretations, and only semiquantitative. Fourier shape descriptors, when used to analyze outlines of otolith silhouettes, represent a rapid, objective, semiautomated means of obtaining much of this information. Analysis of Fourier shape information derived from otoliths of juvenile and adult Alaskan herring and adult Northwest Atlantic herring show that otolith shape reflects differences in fish age and fish race. The shape of otoliths of juvenile fish are significantly different from those of adult fish. Few shape differences can be found, though, between otoliths from adult fish of different age within the same stock. Distinct differences exist between Atlantic and Alaskan adult otolith shapes. For some stocks, minor shape differences occur between left and right otoliths. Differences in otolith shape arising from sexual dimorphism are not apparent. |
format |
Article in Journal/Newspaper |
author |
Bird, Jerry L. Eppler, Duane T. Checkley Jr., David M. |
spellingShingle |
Bird, Jerry L. Eppler, Duane T. Checkley Jr., David M. Comparisons of Herring Otoliths Using Fourier Series Shape Analysis |
author_facet |
Bird, Jerry L. Eppler, Duane T. Checkley Jr., David M. |
author_sort |
Bird, Jerry L. |
title |
Comparisons of Herring Otoliths Using Fourier Series Shape Analysis |
title_short |
Comparisons of Herring Otoliths Using Fourier Series Shape Analysis |
title_full |
Comparisons of Herring Otoliths Using Fourier Series Shape Analysis |
title_fullStr |
Comparisons of Herring Otoliths Using Fourier Series Shape Analysis |
title_full_unstemmed |
Comparisons of Herring Otoliths Using Fourier Series Shape Analysis |
title_sort |
comparisons of herring otoliths using fourier series shape analysis |
publisher |
Canadian Science Publishing |
publishDate |
1986 |
url |
http://dx.doi.org/10.1139/f86-152 http://www.nrcresearchpress.com/doi/pdf/10.1139/f86-152 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 43, issue 6, page 1228-1234 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f86-152 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
43 |
container_issue |
6 |
container_start_page |
1228 |
op_container_end_page |
1234 |
_version_ |
1810466836534263808 |