The Skate, Raja richardsoni Garrick 1961, Assigned to Bathyraja
The deepwater skate, Raja richardsoni Garrick 1961, is assigned to the genus Bathyraja on the basis of studies of 18 specimens from the northwest Atlantic including 10 mature males. It is similar to other Bathyraja species and distinguished from Raja and Breviraja species especially by having in the...
Published in: | Journal of the Fisheries Research Board of Canada |
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Language: | English |
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Canadian Science Publishing
1973
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Online Access: | http://dx.doi.org/10.1139/f73-273 http://www.nrcresearchpress.com/doi/pdf/10.1139/f73-273 |
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crcansciencepubl:10.1139/f73-273 2023-12-17T10:47:21+01:00 The Skate, Raja richardsoni Garrick 1961, Assigned to Bathyraja Templeman, Wilfred 1973 http://dx.doi.org/10.1139/f73-273 http://www.nrcresearchpress.com/doi/pdf/10.1139/f73-273 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 30, issue 11, page 1729-1732 ISSN 0015-296X General Medicine journal-article 1973 crcansciencepubl https://doi.org/10.1139/f73-273 2023-11-19T13:38:54Z The deepwater skate, Raja richardsoni Garrick 1961, is assigned to the genus Bathyraja on the basis of studies of 18 specimens from the northwest Atlantic including 10 mature males. It is similar to other Bathyraja species and distinguished from Raja and Breviraja species especially by having in the clasper tip a ventral terminal cartilage completely enclosed within the skin of the ventral lobe and lacking a free sharp edge, and a sentinel (accessory terminal cartilage no. 1) in the form of a hatchet-shaped knife with a sharp distal edge. Its clasper also has a projection, whose support is the distal process of the ventral marginal cartilage, always found in Bathyraja but not in Raja of the northeast Atlantic. It differs also from Raja in having an uncalcifled or little calcified anterior part of the rostral cartilage, in the freedom of the appendices of the rostrum from the shaft and in the more anterior extension of the pectoral radiais toward the snout. Article in Journal/Newspaper Northeast Atlantic Northwest Atlantic Canadian Science Publishing (via Crossref) Journal of the Fisheries Research Board of Canada 30 11 1729 1732 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Templeman, Wilfred The Skate, Raja richardsoni Garrick 1961, Assigned to Bathyraja |
topic_facet |
General Medicine |
description |
The deepwater skate, Raja richardsoni Garrick 1961, is assigned to the genus Bathyraja on the basis of studies of 18 specimens from the northwest Atlantic including 10 mature males. It is similar to other Bathyraja species and distinguished from Raja and Breviraja species especially by having in the clasper tip a ventral terminal cartilage completely enclosed within the skin of the ventral lobe and lacking a free sharp edge, and a sentinel (accessory terminal cartilage no. 1) in the form of a hatchet-shaped knife with a sharp distal edge. Its clasper also has a projection, whose support is the distal process of the ventral marginal cartilage, always found in Bathyraja but not in Raja of the northeast Atlantic. It differs also from Raja in having an uncalcifled or little calcified anterior part of the rostral cartilage, in the freedom of the appendices of the rostrum from the shaft and in the more anterior extension of the pectoral radiais toward the snout. |
format |
Article in Journal/Newspaper |
author |
Templeman, Wilfred |
author_facet |
Templeman, Wilfred |
author_sort |
Templeman, Wilfred |
title |
The Skate, Raja richardsoni Garrick 1961, Assigned to Bathyraja |
title_short |
The Skate, Raja richardsoni Garrick 1961, Assigned to Bathyraja |
title_full |
The Skate, Raja richardsoni Garrick 1961, Assigned to Bathyraja |
title_fullStr |
The Skate, Raja richardsoni Garrick 1961, Assigned to Bathyraja |
title_full_unstemmed |
The Skate, Raja richardsoni Garrick 1961, Assigned to Bathyraja |
title_sort |
skate, raja richardsoni garrick 1961, assigned to bathyraja |
publisher |
Canadian Science Publishing |
publishDate |
1973 |
url |
http://dx.doi.org/10.1139/f73-273 http://www.nrcresearchpress.com/doi/pdf/10.1139/f73-273 |
genre |
Northeast Atlantic Northwest Atlantic |
genre_facet |
Northeast Atlantic Northwest Atlantic |
op_source |
Journal of the Fisheries Research Board of Canada volume 30, issue 11, page 1729-1732 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f73-273 |
container_title |
Journal of the Fisheries Research Board of Canada |
container_volume |
30 |
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11 |
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1729 |
op_container_end_page |
1732 |
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1785571185244766208 |