Biology of the Antarctic eelpout Pachycara brachycephalum
The aim of this study was to relate the distribution of the Antarctic eelpout, Pachycara brachycephalum, to available physiological data, and to detect constraints in life history and biology. A population of Pachycara brachycephalum from the Antarctic Peninsula was investigated with regard to its g...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Language: | English |
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2006
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Online Access: | http://hdl.handle.net/1834/17100 https://doi.org/10.1016/j.dsr2.2006.02.011 |
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ftoceandocs:oai:aquadocs.org:1834/17100 2024-06-09T07:38:46+00:00 Biology of the Antarctic eelpout Pachycara brachycephalum Brodte, E. Knust, R. Pörtner, H. Arntz, W. 2006 pp.1131-1140 http://hdl.handle.net/1834/17100 https://doi.org/10.1016/j.dsr2.2006.02.011 en eng https://doi.org/10.1016/j.dsr2.2006.02.011 http://hdl.handle.net/1834/17100 Journal Contribution Refereed 2006 ftoceandocs https://doi.org/10.1016/j.dsr2.2006.02.011 2024-05-15T08:02:16Z The aim of this study was to relate the distribution of the Antarctic eelpout, Pachycara brachycephalum, to available physiological data, and to detect constraints in life history and biology. A population of Pachycara brachycephalum from the Antarctic Peninsula was investigated with regard to its growth and fecundity. At this sampling site, the species occurs in water depths around 400 m, much shallower than where it is found in high Antarctic waters. The age of this species was determined by applying the annulus count method to the otoliths. Growth parameters, which show no strong sexual dimorphism, are L∞= 36.0 cm; k = 0.12; t0= - 1.75 (male) and L∞= 36.0 cm; k = 0.10; t0= - 2.99 (female). The maximum age found was 14 years, and maturity is reached after 5 years. At the end of July, females spawn about 80 eggs with a diameter of 9 mm. The smallest fish found so far was an early juvenile of 4.4 cm. The life style characteristics of this species are similar to other polar and boreal eelpout species, supporting the uniformity of the Zoarcidae in general traits. Published Book Antarc* Antarctic Antarctic Peninsula IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications Antarctic Antarctic Peninsula The Antarctic Deep Sea Research Part II: Topical Studies in Oceanography 53 8-10 1131 1140 |
institution |
Open Polar |
collection |
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications |
op_collection_id |
ftoceandocs |
language |
English |
description |
The aim of this study was to relate the distribution of the Antarctic eelpout, Pachycara brachycephalum, to available physiological data, and to detect constraints in life history and biology. A population of Pachycara brachycephalum from the Antarctic Peninsula was investigated with regard to its growth and fecundity. At this sampling site, the species occurs in water depths around 400 m, much shallower than where it is found in high Antarctic waters. The age of this species was determined by applying the annulus count method to the otoliths. Growth parameters, which show no strong sexual dimorphism, are L∞= 36.0 cm; k = 0.12; t0= - 1.75 (male) and L∞= 36.0 cm; k = 0.10; t0= - 2.99 (female). The maximum age found was 14 years, and maturity is reached after 5 years. At the end of July, females spawn about 80 eggs with a diameter of 9 mm. The smallest fish found so far was an early juvenile of 4.4 cm. The life style characteristics of this species are similar to other polar and boreal eelpout species, supporting the uniformity of the Zoarcidae in general traits. Published |
format |
Book |
author |
Brodte, E. Knust, R. Pörtner, H. Arntz, W. |
spellingShingle |
Brodte, E. Knust, R. Pörtner, H. Arntz, W. Biology of the Antarctic eelpout Pachycara brachycephalum |
author_facet |
Brodte, E. Knust, R. Pörtner, H. Arntz, W. |
author_sort |
Brodte, E. |
title |
Biology of the Antarctic eelpout Pachycara brachycephalum |
title_short |
Biology of the Antarctic eelpout Pachycara brachycephalum |
title_full |
Biology of the Antarctic eelpout Pachycara brachycephalum |
title_fullStr |
Biology of the Antarctic eelpout Pachycara brachycephalum |
title_full_unstemmed |
Biology of the Antarctic eelpout Pachycara brachycephalum |
title_sort |
biology of the antarctic eelpout pachycara brachycephalum |
publishDate |
2006 |
url |
http://hdl.handle.net/1834/17100 https://doi.org/10.1016/j.dsr2.2006.02.011 |
geographic |
Antarctic Antarctic Peninsula The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_relation |
https://doi.org/10.1016/j.dsr2.2006.02.011 http://hdl.handle.net/1834/17100 |
op_doi |
https://doi.org/10.1016/j.dsr2.2006.02.011 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
53 |
container_issue |
8-10 |
container_start_page |
1131 |
op_container_end_page |
1140 |
_version_ |
1801375216356556800 |