Age and growth of the Antarctic dragonfishParachaenichthys charcoti(Pisces, Bathydraconidae) from the southern Scotia Arc
The Antarctic dragonfish Parachaenichthys charcoti is commonly found in shelf waters of islands in the southern Scotia Arc. Its northern congener P. georgianus is distributed on the shelves of South Georgia and the South Sandwich Islands. Biological information on P. charcoti is limited and restrict...
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ftopenagrar:oai:www.openagrar.de:timport_mods_00016351 2024-09-15T17:47:07+00:00 Age and growth of the Antarctic dragonfishParachaenichthys charcoti(Pisces, Bathydraconidae) from the southern Scotia Arc La Mesa, Mario Catalano, Barbara Kock, Karl-Hermann Jones, Christopher D. 2012 8 https://doi.org/10.1007/s00300-012-1194-3 https://www.openagrar.de/receive/timport_mods_00016351 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00016351/dn050268.pdf eng eng Polar Biology -- Polar Biol -- 0722-4060 -- 1432-2056 -- 584850-7 -- 1478942-5 -- http://link.springer.com/journal/300 -- http://www.bibliothek.uni-regensburg.de/ezeit/?1478942 https://doi.org/10.1007/s00300-012-1194-3 https://www.openagrar.de/receive/timport_mods_00016351 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00016351/dn050268.pdf only signed in user info:eu-repo/semantics/restrictedAccess article Text Ageing Bathydraconid Parachaenychthys Southern ocean article Text doc-type:article 2012 ftopenagrar https://doi.org/10.1007/s00300-012-1194-3 2024-07-08T23:56:24Z The Antarctic dragonfish Parachaenichthys charcoti is commonly found in shelf waters of islands in the southern Scotia Arc. Its northern congener P. georgianus is distributed on the shelves of South Georgia and the South Sandwich Islands. Biological information on P. charcoti is limited and restricted largely to reproductive traits and feeding habits. The present study fills this gap, providing the first data on age and growth of this species by otolith reading. Age was estimated in juveniles and adults by counting annuli on otoliths. Age of early juveniles was determined by microincrement counts (considered to be daily rings). Age estimates of juveniles and adults ranged from 1 to 9 years, with a high percentage agreement between readings and low values of counting variability indices APE (3.3 %) and CV (4.7 %). Age of early juveniles ranged from 160 to 204 days, all showing an evident check at 32–35 days of age, tentatively linked to the first larval exogenous feeding. The estimated values of von Bertalanffy growth parameters L? and k were 53.55 cm and 0.22, respectively, and the index of growth performance P was 2.33. Hatching in P. charcoti takes place in late winter, from August to September. Compared to other notothenioids inhabiting the Seasonal Pack-ice Zone, P. charcoti is a relatively fast growing species with moderate longevity, sharing several biological characteristics with its sister species P. georgianus Article in Journal/Newspaper Antarc* Antarctic Polar Biology South Sandwich Islands Southern Ocean OpenAgrar (OA) Polar Biology 35 10 1545 1553 |
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English |
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article Text Ageing Bathydraconid Parachaenychthys Southern ocean |
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article Text Ageing Bathydraconid Parachaenychthys Southern ocean La Mesa, Mario Catalano, Barbara Kock, Karl-Hermann Jones, Christopher D. Age and growth of the Antarctic dragonfishParachaenichthys charcoti(Pisces, Bathydraconidae) from the southern Scotia Arc |
topic_facet |
article Text Ageing Bathydraconid Parachaenychthys Southern ocean |
description |
The Antarctic dragonfish Parachaenichthys charcoti is commonly found in shelf waters of islands in the southern Scotia Arc. Its northern congener P. georgianus is distributed on the shelves of South Georgia and the South Sandwich Islands. Biological information on P. charcoti is limited and restricted largely to reproductive traits and feeding habits. The present study fills this gap, providing the first data on age and growth of this species by otolith reading. Age was estimated in juveniles and adults by counting annuli on otoliths. Age of early juveniles was determined by microincrement counts (considered to be daily rings). Age estimates of juveniles and adults ranged from 1 to 9 years, with a high percentage agreement between readings and low values of counting variability indices APE (3.3 %) and CV (4.7 %). Age of early juveniles ranged from 160 to 204 days, all showing an evident check at 32–35 days of age, tentatively linked to the first larval exogenous feeding. The estimated values of von Bertalanffy growth parameters L? and k were 53.55 cm and 0.22, respectively, and the index of growth performance P was 2.33. Hatching in P. charcoti takes place in late winter, from August to September. Compared to other notothenioids inhabiting the Seasonal Pack-ice Zone, P. charcoti is a relatively fast growing species with moderate longevity, sharing several biological characteristics with its sister species P. georgianus |
format |
Article in Journal/Newspaper |
author |
La Mesa, Mario Catalano, Barbara Kock, Karl-Hermann Jones, Christopher D. |
author_facet |
La Mesa, Mario Catalano, Barbara Kock, Karl-Hermann Jones, Christopher D. |
author_sort |
La Mesa, Mario |
title |
Age and growth of the Antarctic dragonfishParachaenichthys charcoti(Pisces, Bathydraconidae) from the southern Scotia Arc |
title_short |
Age and growth of the Antarctic dragonfishParachaenichthys charcoti(Pisces, Bathydraconidae) from the southern Scotia Arc |
title_full |
Age and growth of the Antarctic dragonfishParachaenichthys charcoti(Pisces, Bathydraconidae) from the southern Scotia Arc |
title_fullStr |
Age and growth of the Antarctic dragonfishParachaenichthys charcoti(Pisces, Bathydraconidae) from the southern Scotia Arc |
title_full_unstemmed |
Age and growth of the Antarctic dragonfishParachaenichthys charcoti(Pisces, Bathydraconidae) from the southern Scotia Arc |
title_sort |
age and growth of the antarctic dragonfishparachaenichthys charcoti(pisces, bathydraconidae) from the southern scotia arc |
publishDate |
2012 |
url |
https://doi.org/10.1007/s00300-012-1194-3 https://www.openagrar.de/receive/timport_mods_00016351 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00016351/dn050268.pdf |
genre |
Antarc* Antarctic Polar Biology South Sandwich Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Polar Biology South Sandwich Islands Southern Ocean |
op_relation |
Polar Biology -- Polar Biol -- 0722-4060 -- 1432-2056 -- 584850-7 -- 1478942-5 -- http://link.springer.com/journal/300 -- http://www.bibliothek.uni-regensburg.de/ezeit/?1478942 https://doi.org/10.1007/s00300-012-1194-3 https://www.openagrar.de/receive/timport_mods_00016351 https://www.openagrar.de/servlets/MCRFileNodeServlet/timport_derivate_00016351/dn050268.pdf |
op_rights |
only signed in user info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/s00300-012-1194-3 |
container_title |
Polar Biology |
container_volume |
35 |
container_issue |
10 |
container_start_page |
1545 |
op_container_end_page |
1553 |
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1810495780365008896 |