Life history traits of rare Antarctic dragonfishes from the Weddell Sea
The life history traits of bathydraconids, deep-living fishes distributed all around the Antarctic continent, are poorly known. In particular, very few data are available on the relatively rare genera Akarotaxis and Bathydraco. With the aim to fill this gap, sagittal otoliths and gonads were analyse...
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CAMBRIDGE UNIV PRESS
2018
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Online Access: | http://hdl.handle.net/11577/3281636 https://doi.org/10.1017/S0954102018000317 |
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ftunivpadovairis:oai:www.research.unipd.it:11577/3281636 2024-04-14T08:03:57+00:00 Life history traits of rare Antarctic dragonfishes from the Weddell Sea MARIO LA MESA EMILIO RIGINELLA FORTUNATA DONATO CARLOTTA MAZZOLDI LA MESA, Mario Riginella, Emilio Donato, Fortunata Mazzoldi, Carlotta 2018 STAMPA http://hdl.handle.net/11577/3281636 https://doi.org/10.1017/S0954102018000317 eng eng CAMBRIDGE UNIV PRESS info:eu-repo/semantics/altIdentifier/wos/WOS:000446442500004 volume:30 issue:05 firstpage:289 lastpage:297 numberofpages:9 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11577/3281636 doi:10.1017/S0954102018000317 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85056833594 age bathydraconid gametogenesi reproduction Southern Ocean info:eu-repo/semantics/article 2018 ftunivpadovairis https://doi.org/10.1017/S0954102018000317 2024-03-21T19:32:51Z The life history traits of bathydraconids, deep-living fishes distributed all around the Antarctic continent, are poorly known. In particular, very few data are available on the relatively rare genera Akarotaxis and Bathydraco. With the aim to fill this gap, sagittal otoliths and gonads were analysed to assess individual age and reproductive features of Akarotaxis nudiceps (Waite, 1916), Bathydraco macrolepis Boulenger 1907 and Bathydraco marri Norman, 1938 collected in theWeddell Sea. Based on the annual growth increment patterns, age estimates ranged between 6–11, 5–11 and 8–11 years for A. nudiceps, B. macrolepis and B. marri, respectively. Most of the gametogenetic processes could be described based on gonad histology for both sexes. Females shared the reproductive features commonly reported in notothenioids, such as group-synchronous ovary development and prolonged gametogenesis. Total fecundity estimates were comparable between the two species of Bathydraco (1500–2500 eggs/female), whereas that of Akarotaxis was one order of magnitude smaller (200–250 eggs/ female). Consistently, the mean size of late vitellogenic oocytes showed an opposite trend, being 1.6– 1.8mm in Bathydraco and 2.2mm in Akarotaxis. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Weddell Sea Padua Research Archive (IRIS - Università degli Studi di Padova) Antarctic Southern Ocean The Antarctic Weddell Sea Weddell Antarctic Science 30 5 289 297 |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
age bathydraconid gametogenesi reproduction Southern Ocean |
spellingShingle |
age bathydraconid gametogenesi reproduction Southern Ocean MARIO LA MESA EMILIO RIGINELLA FORTUNATA DONATO CARLOTTA MAZZOLDI Life history traits of rare Antarctic dragonfishes from the Weddell Sea |
topic_facet |
age bathydraconid gametogenesi reproduction Southern Ocean |
description |
The life history traits of bathydraconids, deep-living fishes distributed all around the Antarctic continent, are poorly known. In particular, very few data are available on the relatively rare genera Akarotaxis and Bathydraco. With the aim to fill this gap, sagittal otoliths and gonads were analysed to assess individual age and reproductive features of Akarotaxis nudiceps (Waite, 1916), Bathydraco macrolepis Boulenger 1907 and Bathydraco marri Norman, 1938 collected in theWeddell Sea. Based on the annual growth increment patterns, age estimates ranged between 6–11, 5–11 and 8–11 years for A. nudiceps, B. macrolepis and B. marri, respectively. Most of the gametogenetic processes could be described based on gonad histology for both sexes. Females shared the reproductive features commonly reported in notothenioids, such as group-synchronous ovary development and prolonged gametogenesis. Total fecundity estimates were comparable between the two species of Bathydraco (1500–2500 eggs/female), whereas that of Akarotaxis was one order of magnitude smaller (200–250 eggs/ female). Consistently, the mean size of late vitellogenic oocytes showed an opposite trend, being 1.6– 1.8mm in Bathydraco and 2.2mm in Akarotaxis. |
author2 |
LA MESA, Mario Riginella, Emilio Donato, Fortunata Mazzoldi, Carlotta |
format |
Article in Journal/Newspaper |
author |
MARIO LA MESA EMILIO RIGINELLA FORTUNATA DONATO CARLOTTA MAZZOLDI |
author_facet |
MARIO LA MESA EMILIO RIGINELLA FORTUNATA DONATO CARLOTTA MAZZOLDI |
author_sort |
MARIO LA MESA |
title |
Life history traits of rare Antarctic dragonfishes from the Weddell Sea |
title_short |
Life history traits of rare Antarctic dragonfishes from the Weddell Sea |
title_full |
Life history traits of rare Antarctic dragonfishes from the Weddell Sea |
title_fullStr |
Life history traits of rare Antarctic dragonfishes from the Weddell Sea |
title_full_unstemmed |
Life history traits of rare Antarctic dragonfishes from the Weddell Sea |
title_sort |
life history traits of rare antarctic dragonfishes from the weddell sea |
publisher |
CAMBRIDGE UNIV PRESS |
publishDate |
2018 |
url |
http://hdl.handle.net/11577/3281636 https://doi.org/10.1017/S0954102018000317 |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Southern Ocean Weddell Sea |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000446442500004 volume:30 issue:05 firstpage:289 lastpage:297 numberofpages:9 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11577/3281636 doi:10.1017/S0954102018000317 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85056833594 |
op_doi |
https://doi.org/10.1017/S0954102018000317 |
container_title |
Antarctic Science |
container_volume |
30 |
container_issue |
5 |
container_start_page |
289 |
op_container_end_page |
297 |
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1796300288378798080 |