Growth and age validation in high-Antarctic fish
The growth of three demersal species dominant in biomass and abundance in the Weddell Sea, Chionodraco myersi (channichthyid), Trematomus eulepidotus(nototheniid) and Dolloidraco longedorsalis (artedidraconid), was, studiedon specimens caught in summer. Ages were determined using ground and polished...
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Online Access: | http://hdl.handle.net/10508/6980 http://hdl.handle.net/10261/323829 https://doi.org/10.1007/s003000000132 |
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ftcsic:oai:digital.csic.es:10261/323829 2024-02-11T09:56:58+01:00 Growth and age validation in high-Antarctic fish Morales-Nin, Beatriz Moranta, Joan Balguerías-Guerra, Eduardo Antarctic Ocean Antarctic Atlantic Weddell Sea 2000 http://hdl.handle.net/10508/6980 http://hdl.handle.net/10261/323829 https://doi.org/10.1007/s003000000132 en eng Centro Oceanográfico de Baleares Polar Biology, 23. 2000: 626-634 http://hdl.handle.net/10508/6980 http://hdl.handle.net/10261/323829 doi:10.1007/s003000000132 1192 none Centro Oceanográfico de Baleares Otholits Pesquerías Ageing Growth Chionodraco myersi Tramatomus eulepidotus Dollodraco longedorsalis Weddell Sea research article 2000 ftcsic https://doi.org/10.1007/s003000000132 2024-01-16T11:47:21Z The growth of three demersal species dominant in biomass and abundance in the Weddell Sea, Chionodraco myersi (channichthyid), Trematomus eulepidotus(nototheniid) and Dolloidraco longedorsalis (artedidraconid), was, studiedon specimens caught in summer. Ages were determined using ground and polished otolith sections and an image analysis system to measure the otolith radius and distances of each growth increment to the otolith core. Ageing precision and accuracy have been estimated. Indirect validation methods, basedon the increment growth pattern, were applied to support the annual periodicity of the increments. Due to the lack of some age classes, back-calculated age-length keys were determined and used to fit the von Bertalanffy growth parameters by sex and species. The determined values showed sexual dimorphism, with females having faster growth rates, except in D. longedorsalis. The growth performance index was between 1 and 2, as in other high-Antarctic fish. For T. eulepidotus, age and growth data were available, but this is the first report for C. myersi and D. longedorsalis. Moreover, this is the first time that accuracy and precision have been estimated for high-Antarctic fish age determination No Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Polar Biology Weddell Sea Digital.CSIC (Spanish National Research Council) Antarctic Antarctic Ocean Weddell Weddell Sea Polar Biology 23 9 626 634 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Centro Oceanográfico de Baleares Otholits Pesquerías Ageing Growth Chionodraco myersi Tramatomus eulepidotus Dollodraco longedorsalis Weddell Sea |
spellingShingle |
Centro Oceanográfico de Baleares Otholits Pesquerías Ageing Growth Chionodraco myersi Tramatomus eulepidotus Dollodraco longedorsalis Weddell Sea Morales-Nin, Beatriz Moranta, Joan Balguerías-Guerra, Eduardo Growth and age validation in high-Antarctic fish |
topic_facet |
Centro Oceanográfico de Baleares Otholits Pesquerías Ageing Growth Chionodraco myersi Tramatomus eulepidotus Dollodraco longedorsalis Weddell Sea |
description |
The growth of three demersal species dominant in biomass and abundance in the Weddell Sea, Chionodraco myersi (channichthyid), Trematomus eulepidotus(nototheniid) and Dolloidraco longedorsalis (artedidraconid), was, studiedon specimens caught in summer. Ages were determined using ground and polished otolith sections and an image analysis system to measure the otolith radius and distances of each growth increment to the otolith core. Ageing precision and accuracy have been estimated. Indirect validation methods, basedon the increment growth pattern, were applied to support the annual periodicity of the increments. Due to the lack of some age classes, back-calculated age-length keys were determined and used to fit the von Bertalanffy growth parameters by sex and species. The determined values showed sexual dimorphism, with females having faster growth rates, except in D. longedorsalis. The growth performance index was between 1 and 2, as in other high-Antarctic fish. For T. eulepidotus, age and growth data were available, but this is the first report for C. myersi and D. longedorsalis. Moreover, this is the first time that accuracy and precision have been estimated for high-Antarctic fish age determination No |
format |
Article in Journal/Newspaper |
author |
Morales-Nin, Beatriz Moranta, Joan Balguerías-Guerra, Eduardo |
author_facet |
Morales-Nin, Beatriz Moranta, Joan Balguerías-Guerra, Eduardo |
author_sort |
Morales-Nin, Beatriz |
title |
Growth and age validation in high-Antarctic fish |
title_short |
Growth and age validation in high-Antarctic fish |
title_full |
Growth and age validation in high-Antarctic fish |
title_fullStr |
Growth and age validation in high-Antarctic fish |
title_full_unstemmed |
Growth and age validation in high-Antarctic fish |
title_sort |
growth and age validation in high-antarctic fish |
publishDate |
2000 |
url |
http://hdl.handle.net/10508/6980 http://hdl.handle.net/10261/323829 https://doi.org/10.1007/s003000000132 |
op_coverage |
Antarctic Ocean Antarctic Atlantic Weddell Sea |
geographic |
Antarctic Antarctic Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Antarctic Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Ocean Polar Biology Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Ocean Polar Biology Weddell Sea |
op_relation |
Centro Oceanográfico de Baleares Polar Biology, 23. 2000: 626-634 http://hdl.handle.net/10508/6980 http://hdl.handle.net/10261/323829 doi:10.1007/s003000000132 1192 |
op_rights |
none |
op_doi |
https://doi.org/10.1007/s003000000132 |
container_title |
Polar Biology |
container_volume |
23 |
container_issue |
9 |
container_start_page |
626 |
op_container_end_page |
634 |
_version_ |
1790607475982991360 |