Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl
The overall purpose of this study was to estimate the mortality of Antarctic krill (Euphausia superba) that escape from the most common mesh size used for codends (16mm) in the current commercial fishery. The experiment was carried out off the South Orkney Islands (60°35′S, 45°30′W) using a covered...
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2015
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Online Access: | https://orbit.dtu.dk/en/publications/1d2cedfe-07fd-4fe6-95eb-596c4b31df54 https://doi.org/10.1016/j.fishres.2015.05.019 https://backend.orbit.dtu.dk/ws/files/112872747/Publishers_version.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/1d2cedfe-07fd-4fe6-95eb-596c4b31df54 2024-04-28T07:58:31+00:00 Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl Krafft, Bjørn A. Krag, Ludvig Ahm 2015 application/pdf https://orbit.dtu.dk/en/publications/1d2cedfe-07fd-4fe6-95eb-596c4b31df54 https://doi.org/10.1016/j.fishres.2015.05.019 https://backend.orbit.dtu.dk/ws/files/112872747/Publishers_version.pdf eng eng https://orbit.dtu.dk/en/publications/1d2cedfe-07fd-4fe6-95eb-596c4b31df54 info:eu-repo/semantics/openAccess Krafft , B A & Krag , L A 2015 , ' Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl ' , Fisheries Research , vol. 170 , pp. 102-105 . https://doi.org/10.1016/j.fishres.2015.05.019 Southern Ocean Unaccounted mortality Size selectivity Fishery management /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2015 ftdtupubl https://doi.org/10.1016/j.fishres.2015.05.019 2024-04-10T14:32:34Z The overall purpose of this study was to estimate the mortality of Antarctic krill (Euphausia superba) that escape from the most common mesh size used for codends (16mm) in the current commercial fishery. The experiment was carried out off the South Orkney Islands (60°35′S, 45°30′W) using a covered codend sampling technique for retaining escaped krill, which thereafter were observed in holding tanks to monitor their mortality rate. Our results suggest that krill with smaller body lengths suffered higher mortality. However, sampling depth, haul duration and catch accumulation as well as handling effects onboard, such as exposure to temperature differences, likely increased the mortality rates in our experiment. The results indicates that mortality of krill which escape trawl nets is relatively small, suggesting that krill, in common with many other crustacean species, are fairly tolerant to a process of capture-and-escape. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba South Orkney Islands Southern Ocean Technical University of Denmark: DTU Orbit Fisheries Research 170 102 105 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
Southern Ocean Unaccounted mortality Size selectivity Fishery management /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Southern Ocean Unaccounted mortality Size selectivity Fishery management /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Krafft, Bjørn A. Krag, Ludvig Ahm Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl |
topic_facet |
Southern Ocean Unaccounted mortality Size selectivity Fishery management /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
The overall purpose of this study was to estimate the mortality of Antarctic krill (Euphausia superba) that escape from the most common mesh size used for codends (16mm) in the current commercial fishery. The experiment was carried out off the South Orkney Islands (60°35′S, 45°30′W) using a covered codend sampling technique for retaining escaped krill, which thereafter were observed in holding tanks to monitor their mortality rate. Our results suggest that krill with smaller body lengths suffered higher mortality. However, sampling depth, haul duration and catch accumulation as well as handling effects onboard, such as exposure to temperature differences, likely increased the mortality rates in our experiment. The results indicates that mortality of krill which escape trawl nets is relatively small, suggesting that krill, in common with many other crustacean species, are fairly tolerant to a process of capture-and-escape. |
format |
Article in Journal/Newspaper |
author |
Krafft, Bjørn A. Krag, Ludvig Ahm |
author_facet |
Krafft, Bjørn A. Krag, Ludvig Ahm |
author_sort |
Krafft, Bjørn A. |
title |
Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl |
title_short |
Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl |
title_full |
Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl |
title_fullStr |
Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl |
title_full_unstemmed |
Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl |
title_sort |
assessment of mortality of antarctic krill (euphausia superba) escaping from a trawl |
publishDate |
2015 |
url |
https://orbit.dtu.dk/en/publications/1d2cedfe-07fd-4fe6-95eb-596c4b31df54 https://doi.org/10.1016/j.fishres.2015.05.019 https://backend.orbit.dtu.dk/ws/files/112872747/Publishers_version.pdf |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba South Orkney Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba South Orkney Islands Southern Ocean |
op_source |
Krafft , B A & Krag , L A 2015 , ' Assessment of mortality of Antarctic krill (Euphausia superba) escaping from a trawl ' , Fisheries Research , vol. 170 , pp. 102-105 . https://doi.org/10.1016/j.fishres.2015.05.019 |
op_relation |
https://orbit.dtu.dk/en/publications/1d2cedfe-07fd-4fe6-95eb-596c4b31df54 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.fishres.2015.05.019 |
container_title |
Fisheries Research |
container_volume |
170 |
container_start_page |
102 |
op_container_end_page |
105 |
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1797569956179607552 |