Species separation and zoogeography of redfish and rockfish (genus Sebastes) by otolith shape analysis
Interspecific otolith shape variation was investigated within the species-rich genus Sebastes (redfish, rockfish) as a tool for species separation, since morphological distinction has proven to be difficult. Otolith samples from all four North Atlantic redfish species, six commercially important roc...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/f05-143 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-143 |
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crcansciencepubl:10.1139/f05-143 2024-09-15T17:55:37+00:00 Species separation and zoogeography of redfish and rockfish (genus Sebastes) by otolith shape analysis Stransky, Christoph MacLellan, Shayne E 2005 http://dx.doi.org/10.1139/f05-143 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-143 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 62, issue 10, page 2265-2276 ISSN 0706-652X 1205-7533 journal-article 2005 crcansciencepubl https://doi.org/10.1139/f05-143 2024-08-01T04:10:03Z Interspecific otolith shape variation was investigated within the species-rich genus Sebastes (redfish, rockfish) as a tool for species separation, since morphological distinction has proven to be difficult. Otolith samples from all four North Atlantic redfish species, six commercially important rockfish species from the North Pacific, and Sebastes capensis from the South Atlantic were compared for differences in linear otolith measurements and elliptical Fourier-shape descriptors. A clear distinction between the North Atlantic and North Pacific / South Atlantic species (97% correct jackknifed classification) was achieved by univariate measurements and discriminant analysis of size-corrected Fourier descriptors. Overall species classification success was 91%, 94% within the North Pacific species and 88% within the North Atlantic samples. From the Pacific rockfish, Sebastes alutus otoliths showed the strongest affinity to the North Atlantic Sebastes. High similarity of otolith shapes of S. capensis to the North Pacific Sebastes and clear discrimination from North Atlantic species coincide with current zoogeographical and speciation theories, as well as with recently reported genetic results. Article in Journal/Newspaper Atlantic redfish North Atlantic Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 62 10 2265 2276 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Interspecific otolith shape variation was investigated within the species-rich genus Sebastes (redfish, rockfish) as a tool for species separation, since morphological distinction has proven to be difficult. Otolith samples from all four North Atlantic redfish species, six commercially important rockfish species from the North Pacific, and Sebastes capensis from the South Atlantic were compared for differences in linear otolith measurements and elliptical Fourier-shape descriptors. A clear distinction between the North Atlantic and North Pacific / South Atlantic species (97% correct jackknifed classification) was achieved by univariate measurements and discriminant analysis of size-corrected Fourier descriptors. Overall species classification success was 91%, 94% within the North Pacific species and 88% within the North Atlantic samples. From the Pacific rockfish, Sebastes alutus otoliths showed the strongest affinity to the North Atlantic Sebastes. High similarity of otolith shapes of S. capensis to the North Pacific Sebastes and clear discrimination from North Atlantic species coincide with current zoogeographical and speciation theories, as well as with recently reported genetic results. |
format |
Article in Journal/Newspaper |
author |
Stransky, Christoph MacLellan, Shayne E |
spellingShingle |
Stransky, Christoph MacLellan, Shayne E Species separation and zoogeography of redfish and rockfish (genus Sebastes) by otolith shape analysis |
author_facet |
Stransky, Christoph MacLellan, Shayne E |
author_sort |
Stransky, Christoph |
title |
Species separation and zoogeography of redfish and rockfish (genus Sebastes) by otolith shape analysis |
title_short |
Species separation and zoogeography of redfish and rockfish (genus Sebastes) by otolith shape analysis |
title_full |
Species separation and zoogeography of redfish and rockfish (genus Sebastes) by otolith shape analysis |
title_fullStr |
Species separation and zoogeography of redfish and rockfish (genus Sebastes) by otolith shape analysis |
title_full_unstemmed |
Species separation and zoogeography of redfish and rockfish (genus Sebastes) by otolith shape analysis |
title_sort |
species separation and zoogeography of redfish and rockfish (genus sebastes) by otolith shape analysis |
publisher |
Canadian Science Publishing |
publishDate |
2005 |
url |
http://dx.doi.org/10.1139/f05-143 http://www.nrcresearchpress.com/doi/pdf/10.1139/f05-143 |
genre |
Atlantic redfish North Atlantic |
genre_facet |
Atlantic redfish North Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 62, issue 10, page 2265-2276 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f05-143 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
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62 |
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10 |
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2265 |
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2276 |
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1810431879920222208 |