Does Large-Scale Ocean Circulation Structure Life History Connectivity in Antarctic Toothfish (Dissostichus mawsoni)?
A multidisciplinary approach incorporating otolith chemistry, age data, and numerical Lagrangian particle simulations indicated a single, self-recruiting population of Antarctic toothfish (Dissostichus mawsoni) in the Southeast Pacific Basin (SPB) and Ross Sea, with a life history structured by the...
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ftolddominionuni:oai:digitalcommons.odu.edu:ccpo_pubs-1098 2023-05-15T13:38:02+02:00 Does Large-Scale Ocean Circulation Structure Life History Connectivity in Antarctic Toothfish (Dissostichus mawsoni)? Ashford, Julian Dinniman, Michael S. Brooks, Cassandra Andrews, Allen H. Hofmann, Eileen E. Cailliet, Gregor Jones, Christopher Ramanna, Nakul 2012-01-01T08:00:00Z application/pdf https://digitalcommons.odu.edu/ccpo_pubs/82 https://digitalcommons.odu.edu/cgi/viewcontent.cgi?article=1098&context=ccpo_pubs unknown ODU Digital Commons https://digitalcommons.odu.edu/ccpo_pubs/82 https://digitalcommons.odu.edu/cgi/viewcontent.cgi?article=1098&context=ccpo_pubs CCPO Publications Particle tracking simulations Mesoscale prediction system Krill Euphausia superba Random Walk models Ross Sea Circumpolar current Otolith chemistry Southern Ocean Bottom water Eleginoides Aquaculture and Fisheries Marine Biology Oceanography article 2012 ftolddominionuni 2021-03-02T18:08:05Z A multidisciplinary approach incorporating otolith chemistry, age data, and numerical Lagrangian particle simulations indicated a single, self-recruiting population of Antarctic toothfish (Dissostichus mawsoni) in the Southeast Pacific Basin (SPB) and Ross Sea, with a life history structured by the large-scale circulation. Chemistry deposited prior to capture along otolith edges demonstrated strong environmental heterogeneity, yet the chemistry in otolith nuclei, deposited during early life, showed no differences. Age data showed only adult fish in catches on the Pacific-Antarctic Ridge in the SPB and structuring of life stages consistent with transport pathways from the northern Ross Sea. Lagrangian particle simulations predicted that early life stages following the flow in the SPB would be transported to areas in the Ross Sea where juveniles are caught, whereas the circulation would facilitate adult movement along the shelf slope and back into the SPB where spawning adults are caught. These results suggest that successfully spawning fish spend only a part of their adult life history in the Ross Sea, areas in the eastern Ross Sea contribute disproportionately to the spawning population, and areas in the southwestern Ross Sea may supply fisheries in the southern Indian Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctic Toothfish Euphausia superba Ross Sea Southern Ocean Old Dominion University: ODU Digital Commons Antarctic Indian Pacific Ross Sea Southeast Pacific Basin ENVELOPE(-115.000,-115.000,-60.000,-60.000) Southern Ocean |
institution |
Open Polar |
collection |
Old Dominion University: ODU Digital Commons |
op_collection_id |
ftolddominionuni |
language |
unknown |
topic |
Particle tracking simulations Mesoscale prediction system Krill Euphausia superba Random Walk models Ross Sea Circumpolar current Otolith chemistry Southern Ocean Bottom water Eleginoides Aquaculture and Fisheries Marine Biology Oceanography |
spellingShingle |
Particle tracking simulations Mesoscale prediction system Krill Euphausia superba Random Walk models Ross Sea Circumpolar current Otolith chemistry Southern Ocean Bottom water Eleginoides Aquaculture and Fisheries Marine Biology Oceanography Ashford, Julian Dinniman, Michael S. Brooks, Cassandra Andrews, Allen H. Hofmann, Eileen E. Cailliet, Gregor Jones, Christopher Ramanna, Nakul Does Large-Scale Ocean Circulation Structure Life History Connectivity in Antarctic Toothfish (Dissostichus mawsoni)? |
topic_facet |
Particle tracking simulations Mesoscale prediction system Krill Euphausia superba Random Walk models Ross Sea Circumpolar current Otolith chemistry Southern Ocean Bottom water Eleginoides Aquaculture and Fisheries Marine Biology Oceanography |
description |
A multidisciplinary approach incorporating otolith chemistry, age data, and numerical Lagrangian particle simulations indicated a single, self-recruiting population of Antarctic toothfish (Dissostichus mawsoni) in the Southeast Pacific Basin (SPB) and Ross Sea, with a life history structured by the large-scale circulation. Chemistry deposited prior to capture along otolith edges demonstrated strong environmental heterogeneity, yet the chemistry in otolith nuclei, deposited during early life, showed no differences. Age data showed only adult fish in catches on the Pacific-Antarctic Ridge in the SPB and structuring of life stages consistent with transport pathways from the northern Ross Sea. Lagrangian particle simulations predicted that early life stages following the flow in the SPB would be transported to areas in the Ross Sea where juveniles are caught, whereas the circulation would facilitate adult movement along the shelf slope and back into the SPB where spawning adults are caught. These results suggest that successfully spawning fish spend only a part of their adult life history in the Ross Sea, areas in the eastern Ross Sea contribute disproportionately to the spawning population, and areas in the southwestern Ross Sea may supply fisheries in the southern Indian Ocean. |
format |
Article in Journal/Newspaper |
author |
Ashford, Julian Dinniman, Michael S. Brooks, Cassandra Andrews, Allen H. Hofmann, Eileen E. Cailliet, Gregor Jones, Christopher Ramanna, Nakul |
author_facet |
Ashford, Julian Dinniman, Michael S. Brooks, Cassandra Andrews, Allen H. Hofmann, Eileen E. Cailliet, Gregor Jones, Christopher Ramanna, Nakul |
author_sort |
Ashford, Julian |
title |
Does Large-Scale Ocean Circulation Structure Life History Connectivity in Antarctic Toothfish (Dissostichus mawsoni)? |
title_short |
Does Large-Scale Ocean Circulation Structure Life History Connectivity in Antarctic Toothfish (Dissostichus mawsoni)? |
title_full |
Does Large-Scale Ocean Circulation Structure Life History Connectivity in Antarctic Toothfish (Dissostichus mawsoni)? |
title_fullStr |
Does Large-Scale Ocean Circulation Structure Life History Connectivity in Antarctic Toothfish (Dissostichus mawsoni)? |
title_full_unstemmed |
Does Large-Scale Ocean Circulation Structure Life History Connectivity in Antarctic Toothfish (Dissostichus mawsoni)? |
title_sort |
does large-scale ocean circulation structure life history connectivity in antarctic toothfish (dissostichus mawsoni)? |
publisher |
ODU Digital Commons |
publishDate |
2012 |
url |
https://digitalcommons.odu.edu/ccpo_pubs/82 https://digitalcommons.odu.edu/cgi/viewcontent.cgi?article=1098&context=ccpo_pubs |
long_lat |
ENVELOPE(-115.000,-115.000,-60.000,-60.000) |
geographic |
Antarctic Indian Pacific Ross Sea Southeast Pacific Basin Southern Ocean |
geographic_facet |
Antarctic Indian Pacific Ross Sea Southeast Pacific Basin Southern Ocean |
genre |
Antarc* Antarctic Antarctic Toothfish Euphausia superba Ross Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Toothfish Euphausia superba Ross Sea Southern Ocean |
op_source |
CCPO Publications |
op_relation |
https://digitalcommons.odu.edu/ccpo_pubs/82 https://digitalcommons.odu.edu/cgi/viewcontent.cgi?article=1098&context=ccpo_pubs |
_version_ |
1766100805217157120 |