The distribution of the juvenile stages and eggcases of skates (Rajidae) around the British Isles
Abstract Skates (Rajidae) include species of conservation and commercial importance, but there is limited information regarding their ecologically important habitats, including spawning and nursery areas, in northern European seas. Data on the distribution, relative abundance and length composition...
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crwiley:10.1002/aqc.4149 2024-06-02T08:10:08+00:00 The distribution of the juvenile stages and eggcases of skates (Rajidae) around the British Isles Ellis, Jim R. Gordon, Cat A. Allen, Harriet L. Silva, Joana F. Bird, Christopher Johnston, Graham O'Connor, Bríd McCully Phillips, Sophy R. Hood, Ali 2024 http://dx.doi.org/10.1002/aqc.4149 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.4149 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Aquatic Conservation: Marine and Freshwater Ecosystems volume 34, issue 4 ISSN 1052-7613 1099-0755 journal-article 2024 crwiley https://doi.org/10.1002/aqc.4149 2024-05-03T12:02:16Z Abstract Skates (Rajidae) include species of conservation and commercial importance, but there is limited information regarding their ecologically important habitats, including spawning and nursery areas, in northern European seas. Data on the distribution, relative abundance and length composition of skates were collated from scientific trawl surveys, and based on length‐frequency information, length‐at‐hatching and length‐at‐maturity, skates were allocated to length‐based categories representing early‐juvenile stages (EJS) and mid‐juvenile stages (MJS). Citizen science data were used to inform on the occurrence of eggcases. The Great Eggcase Hunt (starting in 2003) citizen science recording project collects georeferenced data for elasmobranch eggcases, primarily from around the British Isles. This provided verified species‐specific data for a total of 227,407 specimens from 11 skate species. Purse Search Ireland (starting in 2005) provided a further 2491 records of 10 skate species from around Ireland. The most frequently observed skate eggcases were from the genus Raja and occurred around much of the British Isles. The EJS and MJS of such species were observed most frequently in inshore waters. Data for EJS were more limited for Raja microocellata and Raja undulata , indicating that the EJS of these species occur in shallower (<20 m) waters. Juveniles of the genus Leucoraja occurred further offshore. Only the eggcases of Leucoraja naevus were recorded regularly, with the eggcase of Leucoraja fullonica described here. The data collated here provide an overview of skate spawning and nursery areas, thus informing fisheries management and marine spatial planning, including the identification and delineation of Important Shark and Ray Areas (ISRAs). Article in Journal/Newspaper Leucoraja fullonica Wiley Online Library Aquatic Conservation: Marine and Freshwater Ecosystems 34 4 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Skates (Rajidae) include species of conservation and commercial importance, but there is limited information regarding their ecologically important habitats, including spawning and nursery areas, in northern European seas. Data on the distribution, relative abundance and length composition of skates were collated from scientific trawl surveys, and based on length‐frequency information, length‐at‐hatching and length‐at‐maturity, skates were allocated to length‐based categories representing early‐juvenile stages (EJS) and mid‐juvenile stages (MJS). Citizen science data were used to inform on the occurrence of eggcases. The Great Eggcase Hunt (starting in 2003) citizen science recording project collects georeferenced data for elasmobranch eggcases, primarily from around the British Isles. This provided verified species‐specific data for a total of 227,407 specimens from 11 skate species. Purse Search Ireland (starting in 2005) provided a further 2491 records of 10 skate species from around Ireland. The most frequently observed skate eggcases were from the genus Raja and occurred around much of the British Isles. The EJS and MJS of such species were observed most frequently in inshore waters. Data for EJS were more limited for Raja microocellata and Raja undulata , indicating that the EJS of these species occur in shallower (<20 m) waters. Juveniles of the genus Leucoraja occurred further offshore. Only the eggcases of Leucoraja naevus were recorded regularly, with the eggcase of Leucoraja fullonica described here. The data collated here provide an overview of skate spawning and nursery areas, thus informing fisheries management and marine spatial planning, including the identification and delineation of Important Shark and Ray Areas (ISRAs). |
format |
Article in Journal/Newspaper |
author |
Ellis, Jim R. Gordon, Cat A. Allen, Harriet L. Silva, Joana F. Bird, Christopher Johnston, Graham O'Connor, Bríd McCully Phillips, Sophy R. Hood, Ali |
spellingShingle |
Ellis, Jim R. Gordon, Cat A. Allen, Harriet L. Silva, Joana F. Bird, Christopher Johnston, Graham O'Connor, Bríd McCully Phillips, Sophy R. Hood, Ali The distribution of the juvenile stages and eggcases of skates (Rajidae) around the British Isles |
author_facet |
Ellis, Jim R. Gordon, Cat A. Allen, Harriet L. Silva, Joana F. Bird, Christopher Johnston, Graham O'Connor, Bríd McCully Phillips, Sophy R. Hood, Ali |
author_sort |
Ellis, Jim R. |
title |
The distribution of the juvenile stages and eggcases of skates (Rajidae) around the British Isles |
title_short |
The distribution of the juvenile stages and eggcases of skates (Rajidae) around the British Isles |
title_full |
The distribution of the juvenile stages and eggcases of skates (Rajidae) around the British Isles |
title_fullStr |
The distribution of the juvenile stages and eggcases of skates (Rajidae) around the British Isles |
title_full_unstemmed |
The distribution of the juvenile stages and eggcases of skates (Rajidae) around the British Isles |
title_sort |
distribution of the juvenile stages and eggcases of skates (rajidae) around the british isles |
publisher |
Wiley |
publishDate |
2024 |
url |
http://dx.doi.org/10.1002/aqc.4149 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.4149 |
genre |
Leucoraja fullonica |
genre_facet |
Leucoraja fullonica |
op_source |
Aquatic Conservation: Marine and Freshwater Ecosystems volume 34, issue 4 ISSN 1052-7613 1099-0755 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/aqc.4149 |
container_title |
Aquatic Conservation: Marine and Freshwater Ecosystems |
container_volume |
34 |
container_issue |
4 |
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1800755952467574784 |