Testing early life connectivity using otolith chemistry and particle-tracking simulations
We measured the otolith chemistry of adult Scotia Sea icefish ( Chaenocephalus aceratus ), a species with a long pelagic larval phase, along the Antarctic Circumpolar Current (ACC) and compared the chemistry with simulated particle transport using a circulation model. Material laid down in otolith n...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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crcansciencepubl:10.1139/f10-065 2023-12-17T10:19:16+01:00 Testing early life connectivity using otolith chemistry and particle-tracking simulations Ashford, Julian La Mesa, Mario Fach, Bettina A. Jones, Christopher Everson, Inigo Brickman, David 2010 http://dx.doi.org/10.1139/f10-065 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-065 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 8, page 1303-1315 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2010 crcansciencepubl https://doi.org/10.1139/f10-065 2023-11-19T13:39:33Z We measured the otolith chemistry of adult Scotia Sea icefish ( Chaenocephalus aceratus ), a species with a long pelagic larval phase, along the Antarctic Circumpolar Current (ACC) and compared the chemistry with simulated particle transport using a circulation model. Material laid down in otolith nuclei during early life showed (i) strong heterogeneity between the Antarctic Peninsula and South Georgia consistent with a population boundary, (ii) evidence of finer-scale heterogeneity between sampling areas on the Antarctic Peninsula, and (iii) similarity between the eastern and northern shelves of South Georgia, indicating a single, self-recruiting population there. Consistent with the otolith chemistry, simulations of the large-scale circulation predicted that particles released at depths of 100–300 m on the Antarctic Peninsula shelf during spring, corresponding to hatching of icefish larvae from benthic nests, are transported in the southern ACC, missing South Georgia but following trajectories along the southern Scotia Ridge instead. These results suggest that the timing of release and position of early life stages in the water column substantially influence the direction and extent of connectivity. Used in complement, the two techniques promise an innovative approach for generating and testing predictions to resolve early dispersal and connectivity of populations related to the physical circulation of oceanic systems. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Icefish Scotia Sea Canadian Science Publishing (via Crossref) Antarctic The Antarctic Antarctic Peninsula Scotia Sea Canadian Journal of Fisheries and Aquatic Sciences 67 8 1303 1315 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Ashford, Julian La Mesa, Mario Fach, Bettina A. Jones, Christopher Everson, Inigo Testing early life connectivity using otolith chemistry and particle-tracking simulations |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
We measured the otolith chemistry of adult Scotia Sea icefish ( Chaenocephalus aceratus ), a species with a long pelagic larval phase, along the Antarctic Circumpolar Current (ACC) and compared the chemistry with simulated particle transport using a circulation model. Material laid down in otolith nuclei during early life showed (i) strong heterogeneity between the Antarctic Peninsula and South Georgia consistent with a population boundary, (ii) evidence of finer-scale heterogeneity between sampling areas on the Antarctic Peninsula, and (iii) similarity between the eastern and northern shelves of South Georgia, indicating a single, self-recruiting population there. Consistent with the otolith chemistry, simulations of the large-scale circulation predicted that particles released at depths of 100–300 m on the Antarctic Peninsula shelf during spring, corresponding to hatching of icefish larvae from benthic nests, are transported in the southern ACC, missing South Georgia but following trajectories along the southern Scotia Ridge instead. These results suggest that the timing of release and position of early life stages in the water column substantially influence the direction and extent of connectivity. Used in complement, the two techniques promise an innovative approach for generating and testing predictions to resolve early dispersal and connectivity of populations related to the physical circulation of oceanic systems. |
author2 |
Brickman, David |
format |
Article in Journal/Newspaper |
author |
Ashford, Julian La Mesa, Mario Fach, Bettina A. Jones, Christopher Everson, Inigo |
author_facet |
Ashford, Julian La Mesa, Mario Fach, Bettina A. Jones, Christopher Everson, Inigo |
author_sort |
Ashford, Julian |
title |
Testing early life connectivity using otolith chemistry and particle-tracking simulations |
title_short |
Testing early life connectivity using otolith chemistry and particle-tracking simulations |
title_full |
Testing early life connectivity using otolith chemistry and particle-tracking simulations |
title_fullStr |
Testing early life connectivity using otolith chemistry and particle-tracking simulations |
title_full_unstemmed |
Testing early life connectivity using otolith chemistry and particle-tracking simulations |
title_sort |
testing early life connectivity using otolith chemistry and particle-tracking simulations |
publisher |
Canadian Science Publishing |
publishDate |
2010 |
url |
http://dx.doi.org/10.1139/f10-065 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F10-065 http://www.nrcresearchpress.com/doi/pdf/10.1139/F10-065 |
geographic |
Antarctic The Antarctic Antarctic Peninsula Scotia Sea |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Scotia Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Icefish Scotia Sea |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Icefish Scotia Sea |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 67, issue 8, page 1303-1315 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f10-065 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
8 |
container_start_page |
1303 |
op_container_end_page |
1315 |
_version_ |
1785582151577632768 |