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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Centro Oceanográfico de Baleares
2000
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Online Access: | http://hdl.handle.net/10508/6980 https://doi.org/10.1007/s003000000132 |
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ftieo:oai:repositorio.ieo.es:10508/6980 2023-05-15T14:00:17+02:00 Growth and age validation in high-Antarctic fish Morales-Nin, B. (Beatriz) Moranta, J. (Joan) Balguerías-Guerra, E. (Eduardo) Antarctic Ocean Antarctic Atlantic Weddell Sea 2000 http://hdl.handle.net/10508/6980 https://doi.org/10.1007/s003000000132 eng eng Centro Oceanográfico de Baleares http://hdl.handle.net/10508/6980 Polar Biology, 23. 2000: 626-634 doi:10.1007/s003000000132 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ closedAccess CC-BY-NC-ND Otholits Ageing Growth Chionodraco myersi Tramatomus eulepidotus Dollodraco longedorsalis Weddell Sea article 2000 ftieo https://doi.org/10.1007/s003000000132 2022-08-30T23:46:59Z 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 1 Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Polar Biology Weddell Sea Instituto Español de Oceanografía: e-IEO Antarctic Antarctic Ocean Weddell Weddell Sea Polar Biology 23 9 626 634 |
institution |
Open Polar |
collection |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
topic |
Otholits Ageing Growth Chionodraco myersi Tramatomus eulepidotus Dollodraco longedorsalis Weddell Sea |
spellingShingle |
Otholits Ageing Growth Chionodraco myersi Tramatomus eulepidotus Dollodraco longedorsalis Weddell Sea Morales-Nin, B. (Beatriz) Moranta, J. (Joan) Balguerías-Guerra, E. (Eduardo) Growth and age validation in high-Antarctic fish |
topic_facet |
Otholits 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 1 |
format |
Article in Journal/Newspaper |
author |
Morales-Nin, B. (Beatriz) Moranta, J. (Joan) Balguerías-Guerra, E. (Eduardo) |
author_facet |
Morales-Nin, B. (Beatriz) Moranta, J. (Joan) Balguerías-Guerra, E. (Eduardo) |
author_sort |
Morales-Nin, B. (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 |
publisher |
Centro Oceanográfico de Baleares |
publishDate |
2000 |
url |
http://hdl.handle.net/10508/6980 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 |
http://hdl.handle.net/10508/6980 Polar Biology, 23. 2000: 626-634 doi:10.1007/s003000000132 |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ closedAccess |
op_rightsnorm |
CC-BY-NC-ND |
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_ |
1766269317672861696 |