Multi-method approach shows stock structure in Loligo forbesii squid
Knowledge of stock structure is a priority for effective assessment of commercially-fished cephalopods. Loligo forbesii squid are thought to migrate inshore for breeding and offshore for feeding and long-range movements are implied from past studies showing genetic homogeneity in the entire neritic...
Published in: | ICES Journal of Marine Science |
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Language: | English |
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Centro Oceanográfico de Canarias
2022
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Online Access: | http://hdl.handle.net/10508/16133 https://doi.org/10.1093/icesjms/fsac039 |
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ftieo:oai:repositorio.ieo.es:10508/16133 2023-05-15T17:33:52+02:00 Multi-method approach shows stock structure in Loligo forbesii squid Sheerin, E. Barnwall, L. Abad, E. (Esther) Larivain, A. Oesterwind, D. Petroni, M. Perales-Raya, C. (Catalina) Robin, J.P. Sobrino, I. (Ignacio) Valeiras, J. (Julio) O'Meara, D. Pierce, G.J. (Graham John) Allcock, L. Power, A.M. Océan atlantique Atlantique Nord Atlantic Ocean Atlántico Norte Océano Atlántico ICES North Atlantic 2022-03-21 http://hdl.handle.net/10508/16133 https://doi.org/10.1093/icesjms/fsac039 eng eng Centro Oceanográfico de Canarias 1054-3139 http://hdl.handle.net/10508/16133 ICES Journal of Marine Science, 79. 2022: 1159-1174 1095-9289 doi:10.1093/icesjms/fsac039 Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess CC-BY-NC-ND article 2022 ftieo https://doi.org/10.1093/icesjms/fsac039 2022-10-04T23:46:45Z Knowledge of stock structure is a priority for effective assessment of commercially-fished cephalopods. Loligo forbesii squid are thought to migrate inshore for breeding and offshore for feeding and long-range movements are implied from past studies showing genetic homogeneity in the entire neritic population. Only offshore populations (Faroe and Rockall Bank) were considered distinct. The present study applied mitchondrial and microsatellite markers (nine loci) to samples from Rockall Bank, north Scotland, North Sea, various shelf locations in Ireland, English Channel, northern Bay of Biscay, north Spain, and Bay of Cadiz. No statistically significant genetic sub-structure was found, although some non-significant trends involving Rockall were seen using microsatellite markers. Differences in L. forbesii statolith shape were apparent at a subset of locations, with most locations showing pairwise differences and statoliths from north Ireland being highly distinct. This suggests that (i) statolith shape is highly sensitive to local conditions and (ii) L. forbesii forms distinguishable groups (based on shape statistics), maintaining these groups over sufficiently long periods for local conditions to affect the shape of the statolith. Overall evidence suggests that L. forbesii forms separable (ecological) groups over short timescales with a semi-isolated breeding group at Rockall whose distinctiveness varies over time. Postprint Article in Journal/Newspaper North Atlantic Instituto Español de Oceanografía: e-IEO Rockall Bank ENVELOPE(-16.519,-16.519,55.821,55.821) ICES Journal of Marine Science 79 4 1159 1174 |
institution |
Open Polar |
collection |
Instituto Español de Oceanografía: e-IEO |
op_collection_id |
ftieo |
language |
English |
description |
Knowledge of stock structure is a priority for effective assessment of commercially-fished cephalopods. Loligo forbesii squid are thought to migrate inshore for breeding and offshore for feeding and long-range movements are implied from past studies showing genetic homogeneity in the entire neritic population. Only offshore populations (Faroe and Rockall Bank) were considered distinct. The present study applied mitchondrial and microsatellite markers (nine loci) to samples from Rockall Bank, north Scotland, North Sea, various shelf locations in Ireland, English Channel, northern Bay of Biscay, north Spain, and Bay of Cadiz. No statistically significant genetic sub-structure was found, although some non-significant trends involving Rockall were seen using microsatellite markers. Differences in L. forbesii statolith shape were apparent at a subset of locations, with most locations showing pairwise differences and statoliths from north Ireland being highly distinct. This suggests that (i) statolith shape is highly sensitive to local conditions and (ii) L. forbesii forms distinguishable groups (based on shape statistics), maintaining these groups over sufficiently long periods for local conditions to affect the shape of the statolith. Overall evidence suggests that L. forbesii forms separable (ecological) groups over short timescales with a semi-isolated breeding group at Rockall whose distinctiveness varies over time. Postprint |
format |
Article in Journal/Newspaper |
author |
Sheerin, E. Barnwall, L. Abad, E. (Esther) Larivain, A. Oesterwind, D. Petroni, M. Perales-Raya, C. (Catalina) Robin, J.P. Sobrino, I. (Ignacio) Valeiras, J. (Julio) O'Meara, D. Pierce, G.J. (Graham John) Allcock, L. Power, A.M. |
spellingShingle |
Sheerin, E. Barnwall, L. Abad, E. (Esther) Larivain, A. Oesterwind, D. Petroni, M. Perales-Raya, C. (Catalina) Robin, J.P. Sobrino, I. (Ignacio) Valeiras, J. (Julio) O'Meara, D. Pierce, G.J. (Graham John) Allcock, L. Power, A.M. Multi-method approach shows stock structure in Loligo forbesii squid |
author_facet |
Sheerin, E. Barnwall, L. Abad, E. (Esther) Larivain, A. Oesterwind, D. Petroni, M. Perales-Raya, C. (Catalina) Robin, J.P. Sobrino, I. (Ignacio) Valeiras, J. (Julio) O'Meara, D. Pierce, G.J. (Graham John) Allcock, L. Power, A.M. |
author_sort |
Sheerin, E. |
title |
Multi-method approach shows stock structure in Loligo forbesii squid |
title_short |
Multi-method approach shows stock structure in Loligo forbesii squid |
title_full |
Multi-method approach shows stock structure in Loligo forbesii squid |
title_fullStr |
Multi-method approach shows stock structure in Loligo forbesii squid |
title_full_unstemmed |
Multi-method approach shows stock structure in Loligo forbesii squid |
title_sort |
multi-method approach shows stock structure in loligo forbesii squid |
publisher |
Centro Oceanográfico de Canarias |
publishDate |
2022 |
url |
http://hdl.handle.net/10508/16133 https://doi.org/10.1093/icesjms/fsac039 |
op_coverage |
Océan atlantique Atlantique Nord Atlantic Ocean Atlántico Norte Océano Atlántico ICES North Atlantic |
long_lat |
ENVELOPE(-16.519,-16.519,55.821,55.821) |
geographic |
Rockall Bank |
geographic_facet |
Rockall Bank |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
1054-3139 http://hdl.handle.net/10508/16133 ICES Journal of Marine Science, 79. 2022: 1159-1174 1095-9289 doi:10.1093/icesjms/fsac039 |
op_rights |
Atribución-NoComercial-SinDerivadas 3.0 España http://creativecommons.org/licenses/by-nc-nd/3.0/es/ openAccess |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1093/icesjms/fsac039 |
container_title |
ICES Journal of Marine Science |
container_volume |
79 |
container_issue |
4 |
container_start_page |
1159 |
op_container_end_page |
1174 |
_version_ |
1766132518461898752 |