Life history traits of rare Antarctic dragonfishes from the Weddell Sea
Abstract 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 we...
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crcambridgeupr:10.1017/s0954102018000317 2024-03-03T08:38:09+00:00 Life history traits of rare Antarctic dragonfishes from the Weddell Sea La Mesa, Mario Riginella, Emilio Donato, Fortunata Mazzoldi, Carlotta 2018 http://dx.doi.org/10.1017/s0954102018000317 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000317 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms Antarctic Science volume 30, issue 5, page 289-297 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2018 crcambridgeupr https://doi.org/10.1017/s0954102018000317 2024-02-08T08:36:44Z Abstract 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 the Weddell 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 1.6–1.8 mm in Bathydraco and 2.2 mm in Akarotaxis . Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Weddell Sea Cambridge University Press Antarctic The Antarctic Weddell Sea Weddell Antarctic Science 30 5 289 297 |
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Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography La Mesa, Mario Riginella, Emilio Donato, Fortunata Mazzoldi, Carlotta Life history traits of rare Antarctic dragonfishes from the Weddell Sea |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract 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 the Weddell 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 1.6–1.8 mm in Bathydraco and 2.2 mm in Akarotaxis . |
format |
Article in Journal/Newspaper |
author |
La Mesa, Mario Riginella, Emilio Donato, Fortunata Mazzoldi, Carlotta |
author_facet |
La Mesa, Mario Riginella, Emilio Donato, Fortunata Mazzoldi, Carlotta |
author_sort |
La Mesa, Mario |
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 University Press (CUP) |
publishDate |
2018 |
url |
http://dx.doi.org/10.1017/s0954102018000317 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102018000317 |
geographic |
Antarctic The Antarctic Weddell Sea Weddell |
geographic_facet |
Antarctic The Antarctic Weddell Sea Weddell |
genre |
Antarc* Antarctic Antarctic Science Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Science Weddell Sea |
op_source |
Antarctic Science volume 30, issue 5, page 289-297 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms https://www.cambridge.org/core/terms |
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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1792504930711371776 |