Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic
Population genetic structure of the thorny skate (Amblyraja radiata) was surveyed in >300 individuals sampled from Newfoundland, Iceland, Norway, the Kattegat and the central North Sea. A 290-bp fragment of the mt cytochrome-b gene was first screened by SSCP. Sequences of SSCP haplotypes revealed...
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Online Access: | https://research.wur.nl/en/publications/population-structure-and-historical-demography-of-the-thorny-skat https://doi.org/10.1007/s00227-006-0556-1 |
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ftunivwagenin:oai:library.wur.nl:wurpubs/356000 2024-01-14T10:07:52+01:00 Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic Chevolot, M. Wolfs, P.H.J. Palsson, J. Rijnsdorp, A.D. Stam, W.T. Olsen, J.L. 2007 application/pdf https://research.wur.nl/en/publications/population-structure-and-historical-demography-of-the-thorny-skat https://doi.org/10.1007/s00227-006-0556-1 en eng https://edepot.wur.nl/21869 https://research.wur.nl/en/publications/population-structure-and-historical-demography-of-the-thorny-skat doi:10.1007/s00227-006-0556-1 info:eu-repo/semantics/restrictedAccess Wageningen University & Research Marine Biology 151 (2007) 4 ISSN: 0025-3162 baltic sea cladistic-analysis english-channel fucus-serratus genetic-structure geographical-distribution mitochondrial-dna pleuronectes-platessa l ray raja-clavata secondary contact info:eu-repo/semantics/article Article/Letter to editor info:eu-repo/semantics/publishedVersion 2007 ftunivwagenin https://doi.org/10.1007/s00227-006-0556-1 2023-12-20T23:19:37Z Population genetic structure of the thorny skate (Amblyraja radiata) was surveyed in >300 individuals sampled from Newfoundland, Iceland, Norway, the Kattegat and the central North Sea. A 290-bp fragment of the mt cytochrome-b gene was first screened by SSCP. Sequences of SSCP haplotypes revealed 34 haplotypes, 14 of which were unique to Iceland, 3 to Newfoundland, 1 to Norway and 3 to the Kattegat. The global F ST was weak but significant. Removal of the two Kattegat locations, which were the most differentiated, resulted in no significant genetic differentiation. Haplotype diversity was high and evenly distributed across the entire Atlantic (h = 0.8) with the exception of the North Sea (h = 0.48). Statistical parsimony revealed a star-like genealogy with a central widespread haplotype. A subsequent nested clade analysis led to the inference of contiguous expansion with evidence for long distance dispersal between Newfoundland and Iceland. Historical demographic analysis showed that thorny skates have undergone exponential population expansion that started between 1.1 million and 690,000 years ago; and that the Last Glacial Maximum apparently had little effect. These results strongly differ from those of a parallel study of the thornback ray (Raja clavata) in which clear structure and former refugial areas could be identified. Although both species have similar life history traits and overlapping ranges, the continental shelf edge apparently does not present a barrier to migration in A. radiata, as it does for R. clavata Article in Journal/Newspaper Iceland Newfoundland North Atlantic Wageningen UR (University & Research Centre): Digital Library Norway Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Marine Biology 151 4 1275 1286 |
institution |
Open Polar |
collection |
Wageningen UR (University & Research Centre): Digital Library |
op_collection_id |
ftunivwagenin |
language |
English |
topic |
baltic sea cladistic-analysis english-channel fucus-serratus genetic-structure geographical-distribution mitochondrial-dna pleuronectes-platessa l ray raja-clavata secondary contact |
spellingShingle |
baltic sea cladistic-analysis english-channel fucus-serratus genetic-structure geographical-distribution mitochondrial-dna pleuronectes-platessa l ray raja-clavata secondary contact Chevolot, M. Wolfs, P.H.J. Palsson, J. Rijnsdorp, A.D. Stam, W.T. Olsen, J.L. Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic |
topic_facet |
baltic sea cladistic-analysis english-channel fucus-serratus genetic-structure geographical-distribution mitochondrial-dna pleuronectes-platessa l ray raja-clavata secondary contact |
description |
Population genetic structure of the thorny skate (Amblyraja radiata) was surveyed in >300 individuals sampled from Newfoundland, Iceland, Norway, the Kattegat and the central North Sea. A 290-bp fragment of the mt cytochrome-b gene was first screened by SSCP. Sequences of SSCP haplotypes revealed 34 haplotypes, 14 of which were unique to Iceland, 3 to Newfoundland, 1 to Norway and 3 to the Kattegat. The global F ST was weak but significant. Removal of the two Kattegat locations, which were the most differentiated, resulted in no significant genetic differentiation. Haplotype diversity was high and evenly distributed across the entire Atlantic (h = 0.8) with the exception of the North Sea (h = 0.48). Statistical parsimony revealed a star-like genealogy with a central widespread haplotype. A subsequent nested clade analysis led to the inference of contiguous expansion with evidence for long distance dispersal between Newfoundland and Iceland. Historical demographic analysis showed that thorny skates have undergone exponential population expansion that started between 1.1 million and 690,000 years ago; and that the Last Glacial Maximum apparently had little effect. These results strongly differ from those of a parallel study of the thornback ray (Raja clavata) in which clear structure and former refugial areas could be identified. Although both species have similar life history traits and overlapping ranges, the continental shelf edge apparently does not present a barrier to migration in A. radiata, as it does for R. clavata |
format |
Article in Journal/Newspaper |
author |
Chevolot, M. Wolfs, P.H.J. Palsson, J. Rijnsdorp, A.D. Stam, W.T. Olsen, J.L. |
author_facet |
Chevolot, M. Wolfs, P.H.J. Palsson, J. Rijnsdorp, A.D. Stam, W.T. Olsen, J.L. |
author_sort |
Chevolot, M. |
title |
Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic |
title_short |
Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic |
title_full |
Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic |
title_fullStr |
Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic |
title_full_unstemmed |
Population structure and historical demography of the thorny skate (Amblyraja radiata, Rajidae) in the North Atlantic |
title_sort |
population structure and historical demography of the thorny skate (amblyraja radiata, rajidae) in the north atlantic |
publishDate |
2007 |
url |
https://research.wur.nl/en/publications/population-structure-and-historical-demography-of-the-thorny-skat https://doi.org/10.1007/s00227-006-0556-1 |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Norway Kattegat |
geographic_facet |
Norway Kattegat |
genre |
Iceland Newfoundland North Atlantic |
genre_facet |
Iceland Newfoundland North Atlantic |
op_source |
Marine Biology 151 (2007) 4 ISSN: 0025-3162 |
op_relation |
https://edepot.wur.nl/21869 https://research.wur.nl/en/publications/population-structure-and-historical-demography-of-the-thorny-skat doi:10.1007/s00227-006-0556-1 |
op_rights |
info:eu-repo/semantics/restrictedAccess Wageningen University & Research |
op_doi |
https://doi.org/10.1007/s00227-006-0556-1 |
container_title |
Marine Biology |
container_volume |
151 |
container_issue |
4 |
container_start_page |
1275 |
op_container_end_page |
1286 |
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1788062281615015936 |