Population structure of the thornback ray ( Raja clavata L.) in British waters
Prior to the 1950s, thornback ray (Raja clavata L.) was common and widely distributed in the seas of Northwest Europe. Since then, it has decreased in abundance and geographic range due to over-fishing. The sustainability of ray populations is of concern to fisheries management because their slow gr...
Published in: | Journal of Sea Research |
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Language: | English |
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2006
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Online Access: | https://hdl.handle.net/11370/a638e86a-e49c-4acc-997d-57a9ff8f915a https://research.rug.nl/en/publications/a638e86a-e49c-4acc-997d-57a9ff8f915a https://doi.org/10.1016/j.seares.2006.05.005 |
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ftunigroningenpu:oai:pure.rug.nl:publications/a638e86a-e49c-4acc-997d-57a9ff8f915a 2024-09-09T19:29:51+00:00 Population structure of the thornback ray ( Raja clavata L.) in British waters Chevolot, Malia Ellis, Jim R. Hoarau, Galice Rijnsdorp, Adriaan D. Stam, W. T. Olsen, Jeanine L. 2006-11 https://hdl.handle.net/11370/a638e86a-e49c-4acc-997d-57a9ff8f915a https://research.rug.nl/en/publications/a638e86a-e49c-4acc-997d-57a9ff8f915a https://doi.org/10.1016/j.seares.2006.05.005 eng eng https://research.rug.nl/en/publications/a638e86a-e49c-4acc-997d-57a9ff8f915a info:eu-repo/semantics/closedAccess Chevolot , M , Ellis , J R , Hoarau , G , Rijnsdorp , A D , Stam , W T & Olsen , J L 2006 , ' Population structure of the thornback ray ( Raja clavata L.) in British waters ' , Journal of Sea Research , vol. 56 , no. 4 , pp. 305-316 . https://doi.org/10.1016/j.seares.2006.05.005 elasmobranchs genetic structure microsatellite thornback ray Rajidae COD GADUS-MORHUA PLEURONECTES-PLATESSA L SOUTHERN NORTH-SEA GULF-OF-MEXICO GENETIC-STRUCTURE ATLANTIC COD MULTILOCUS GENOTYPES MICROSATELLITE DATA GEOGRAPHIC SCALES REACTION NORMS article 2006 ftunigroningenpu https://doi.org/10.1016/j.seares.2006.05.005 2024-06-17T15:50:19Z Prior to the 1950s, thornback ray (Raja clavata L.) was common and widely distributed in the seas of Northwest Europe. Since then, it has decreased in abundance and geographic range due to over-fishing. The sustainability of ray populations is of concern to fisheries management because their slow growth rate, late maturity and low fecundity make them susceptible to exploitation as victims of by-catch. We investigated the population genetic structure of thornback rays from 14 locations in the southern North Sea, English Channel and Irish Sea. Adults comprised <4% of the total sampling despite heavy sampling effort over 47 hauls; thus our results apply mainly to sexually immature individuals. Using five microsatellite loci, weak but significant population differentiation was detected with a global F-ST = 0.013 (P <0.001). Pairwise F-st was significant for 75 out of 171 comparisons. Although earlier tagging studies suggest restricted foraging distances from home areas, the absence of genetic differentiation between some distant populations suggests that a substantial fraction of individuals migrate over wide areas. Autumn/winter locations appear to have a lower level of differentiation than spring/summer, which could be due to seasonal migration. Management and conservation of thornback ray populations will be challenging as population structure appears to be dynamic in space and time. (c) 2006 Elsevier B.V. All rights reserved. Article in Journal/Newspaper atlantic cod Gadus morhua University of Groningen research database Journal of Sea Research 56 4 305 316 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
elasmobranchs genetic structure microsatellite thornback ray Rajidae COD GADUS-MORHUA PLEURONECTES-PLATESSA L SOUTHERN NORTH-SEA GULF-OF-MEXICO GENETIC-STRUCTURE ATLANTIC COD MULTILOCUS GENOTYPES MICROSATELLITE DATA GEOGRAPHIC SCALES REACTION NORMS |
spellingShingle |
elasmobranchs genetic structure microsatellite thornback ray Rajidae COD GADUS-MORHUA PLEURONECTES-PLATESSA L SOUTHERN NORTH-SEA GULF-OF-MEXICO GENETIC-STRUCTURE ATLANTIC COD MULTILOCUS GENOTYPES MICROSATELLITE DATA GEOGRAPHIC SCALES REACTION NORMS Chevolot, Malia Ellis, Jim R. Hoarau, Galice Rijnsdorp, Adriaan D. Stam, W. T. Olsen, Jeanine L. Population structure of the thornback ray ( Raja clavata L.) in British waters |
topic_facet |
elasmobranchs genetic structure microsatellite thornback ray Rajidae COD GADUS-MORHUA PLEURONECTES-PLATESSA L SOUTHERN NORTH-SEA GULF-OF-MEXICO GENETIC-STRUCTURE ATLANTIC COD MULTILOCUS GENOTYPES MICROSATELLITE DATA GEOGRAPHIC SCALES REACTION NORMS |
description |
Prior to the 1950s, thornback ray (Raja clavata L.) was common and widely distributed in the seas of Northwest Europe. Since then, it has decreased in abundance and geographic range due to over-fishing. The sustainability of ray populations is of concern to fisheries management because their slow growth rate, late maturity and low fecundity make them susceptible to exploitation as victims of by-catch. We investigated the population genetic structure of thornback rays from 14 locations in the southern North Sea, English Channel and Irish Sea. Adults comprised <4% of the total sampling despite heavy sampling effort over 47 hauls; thus our results apply mainly to sexually immature individuals. Using five microsatellite loci, weak but significant population differentiation was detected with a global F-ST = 0.013 (P <0.001). Pairwise F-st was significant for 75 out of 171 comparisons. Although earlier tagging studies suggest restricted foraging distances from home areas, the absence of genetic differentiation between some distant populations suggests that a substantial fraction of individuals migrate over wide areas. Autumn/winter locations appear to have a lower level of differentiation than spring/summer, which could be due to seasonal migration. Management and conservation of thornback ray populations will be challenging as population structure appears to be dynamic in space and time. (c) 2006 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Chevolot, Malia Ellis, Jim R. Hoarau, Galice Rijnsdorp, Adriaan D. Stam, W. T. Olsen, Jeanine L. |
author_facet |
Chevolot, Malia Ellis, Jim R. Hoarau, Galice Rijnsdorp, Adriaan D. Stam, W. T. Olsen, Jeanine L. |
author_sort |
Chevolot, Malia |
title |
Population structure of the thornback ray ( Raja clavata L.) in British waters |
title_short |
Population structure of the thornback ray ( Raja clavata L.) in British waters |
title_full |
Population structure of the thornback ray ( Raja clavata L.) in British waters |
title_fullStr |
Population structure of the thornback ray ( Raja clavata L.) in British waters |
title_full_unstemmed |
Population structure of the thornback ray ( Raja clavata L.) in British waters |
title_sort |
population structure of the thornback ray ( raja clavata l.) in british waters |
publishDate |
2006 |
url |
https://hdl.handle.net/11370/a638e86a-e49c-4acc-997d-57a9ff8f915a https://research.rug.nl/en/publications/a638e86a-e49c-4acc-997d-57a9ff8f915a https://doi.org/10.1016/j.seares.2006.05.005 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Chevolot , M , Ellis , J R , Hoarau , G , Rijnsdorp , A D , Stam , W T & Olsen , J L 2006 , ' Population structure of the thornback ray ( Raja clavata L.) in British waters ' , Journal of Sea Research , vol. 56 , no. 4 , pp. 305-316 . https://doi.org/10.1016/j.seares.2006.05.005 |
op_relation |
https://research.rug.nl/en/publications/a638e86a-e49c-4acc-997d-57a9ff8f915a |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.seares.2006.05.005 |
container_title |
Journal of Sea Research |
container_volume |
56 |
container_issue |
4 |
container_start_page |
305 |
op_container_end_page |
316 |
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1809898937892470784 |