Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters
Porbeagles throughout the North Atlantic have experienced severe population decline through overfishing, with the northeastern population listed as critically endangered. Management of this population is constrained by the paucity of data on porbeagle population structure, distribution and behaviour...
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Online Access: | https://pure.qub.ac.uk/en/publications/bb50dd8b-279a-4372-b637-e28da61cd6bd https://doi.org/10.1093/icesjms/fsz046 |
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/bb50dd8b-279a-4372-b637-e28da61cd6bd 2024-05-19T07:43:38+00:00 Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters Cameron, Luke W.J. Roche, William K. Houghton, Jonathan D.R. Mensink, Paul J. Grabowski, Jonathan 2019-12-01 https://pure.qub.ac.uk/en/publications/bb50dd8b-279a-4372-b637-e28da61cd6bd https://doi.org/10.1093/icesjms/fsz046 eng eng https://pure.qub.ac.uk/en/publications/bb50dd8b-279a-4372-b637-e28da61cd6bd info:eu-repo/semantics/closedAccess Cameron , L W J , Roche , W K , Houghton , J D R , Mensink , P J & Grabowski , J 2019 , ' Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters ' , ICES Journal of Marine Science , vol. 76 , no. 6 , pp. 1581-1590 . https://doi.org/10.1093/icesjms/fsz046 Atlantic Lamna nasus mark-recapture population structure porbeagle tagging /dk/atira/pure/subjectarea/asjc/1900/1910 name=Oceanography /dk/atira/pure/subjectarea/asjc/1100/1105 name=Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1100/1104 name=Aquatic Science /dk/atira/pure/subjectarea/asjc/2300/2303 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2019 ftqueensubelpubl https://doi.org/10.1093/icesjms/fsz046 2024-04-25T00:06:28Z Porbeagles throughout the North Atlantic have experienced severe population decline through overfishing, with the northeastern population listed as critically endangered. Management of this population is constrained by the paucity of data on porbeagle population structure, distribution and behaviour in this region. Here we use a long-term (47 year) Irish capture-mark-recapture dataset to investigate the population structure, spatial distribution and seasonal movements of this species. From 1970-2017, a total of 268 sharks (9 recaptures) were ID tagged, with most individuals likely being juvenile based on length at maturity estimates (mean total length = 143.9 cm, SD = 35.4). Almost all captures were recorded at three distinct locations near angling hubs along the south, west and north coasts with catches peaking in August. Long-term trends in capture date indicated a shift towards earlier capture dates in the northern site (n = 153). Our findings suggest Irish waters may act as a persistent summer aggregation site for juveniles, which show evidence for seasonal site fidelity, returning to nearby locations between years. These findings demonstrate the utility of such programmes, which can be implemented, with minimal expense by engaging with the angling sector, to elucidate the population structure and distribution of wide-ranging fish species. Article in Journal/Newspaper Lamna nasus North Atlantic Porbeagle Queen's University Belfast Research Portal ICES Journal of Marine Science 76 6 1581 1590 |
institution |
Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
Atlantic Lamna nasus mark-recapture population structure porbeagle tagging /dk/atira/pure/subjectarea/asjc/1900/1910 name=Oceanography /dk/atira/pure/subjectarea/asjc/1100/1105 name=Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1100/1104 name=Aquatic Science /dk/atira/pure/subjectarea/asjc/2300/2303 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
Atlantic Lamna nasus mark-recapture population structure porbeagle tagging /dk/atira/pure/subjectarea/asjc/1900/1910 name=Oceanography /dk/atira/pure/subjectarea/asjc/1100/1105 name=Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1100/1104 name=Aquatic Science /dk/atira/pure/subjectarea/asjc/2300/2303 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Cameron, Luke W.J. Roche, William K. Houghton, Jonathan D.R. Mensink, Paul J. Grabowski, Jonathan Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters |
topic_facet |
Atlantic Lamna nasus mark-recapture population structure porbeagle tagging /dk/atira/pure/subjectarea/asjc/1900/1910 name=Oceanography /dk/atira/pure/subjectarea/asjc/1100/1105 name=Ecology Evolution Behavior and Systematics /dk/atira/pure/subjectarea/asjc/1100/1104 name=Aquatic Science /dk/atira/pure/subjectarea/asjc/2300/2303 /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
description |
Porbeagles throughout the North Atlantic have experienced severe population decline through overfishing, with the northeastern population listed as critically endangered. Management of this population is constrained by the paucity of data on porbeagle population structure, distribution and behaviour in this region. Here we use a long-term (47 year) Irish capture-mark-recapture dataset to investigate the population structure, spatial distribution and seasonal movements of this species. From 1970-2017, a total of 268 sharks (9 recaptures) were ID tagged, with most individuals likely being juvenile based on length at maturity estimates (mean total length = 143.9 cm, SD = 35.4). Almost all captures were recorded at three distinct locations near angling hubs along the south, west and north coasts with catches peaking in August. Long-term trends in capture date indicated a shift towards earlier capture dates in the northern site (n = 153). Our findings suggest Irish waters may act as a persistent summer aggregation site for juveniles, which show evidence for seasonal site fidelity, returning to nearby locations between years. These findings demonstrate the utility of such programmes, which can be implemented, with minimal expense by engaging with the angling sector, to elucidate the population structure and distribution of wide-ranging fish species. |
format |
Article in Journal/Newspaper |
author |
Cameron, Luke W.J. Roche, William K. Houghton, Jonathan D.R. Mensink, Paul J. Grabowski, Jonathan |
author_facet |
Cameron, Luke W.J. Roche, William K. Houghton, Jonathan D.R. Mensink, Paul J. Grabowski, Jonathan |
author_sort |
Cameron, Luke W.J. |
title |
Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters |
title_short |
Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters |
title_full |
Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters |
title_fullStr |
Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters |
title_full_unstemmed |
Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters |
title_sort |
population structure and spatial distribution of porbeagles (lamna nasus) in irish waters |
publishDate |
2019 |
url |
https://pure.qub.ac.uk/en/publications/bb50dd8b-279a-4372-b637-e28da61cd6bd https://doi.org/10.1093/icesjms/fsz046 |
genre |
Lamna nasus North Atlantic Porbeagle |
genre_facet |
Lamna nasus North Atlantic Porbeagle |
op_source |
Cameron , L W J , Roche , W K , Houghton , J D R , Mensink , P J & Grabowski , J 2019 , ' Population structure and spatial distribution of porbeagles (Lamna nasus) in Irish waters ' , ICES Journal of Marine Science , vol. 76 , no. 6 , pp. 1581-1590 . https://doi.org/10.1093/icesjms/fsz046 |
op_relation |
https://pure.qub.ac.uk/en/publications/bb50dd8b-279a-4372-b637-e28da61cd6bd |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1093/icesjms/fsz046 |
container_title |
ICES Journal of Marine Science |
container_volume |
76 |
container_issue |
6 |
container_start_page |
1581 |
op_container_end_page |
1590 |
_version_ |
1799483365474172928 |