A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex
An investigation of combined CO1 and NADH2 data for rajid skates referable to Raja miraletus provided evidence that populations ranging from southern Africa to the North-East Atlantic and Mediterranean Sea, once considered to represent a cline, belong to a species complex consisting of at least four...
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2016
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Online Access: | http://www.mapress.com/j/zt/article/view/zootaxa.4147.4.8 https://doi.org/10.11646/zootaxa.4147.4.8 |
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ftmagnoliapress:oai:ojs.mapress.com:article/17347 2023-05-15T17:38:21+02:00 A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex LAST, PETER R. SÉRET, BERNARD 2016-08-05 application/pdf http://www.mapress.com/j/zt/article/view/zootaxa.4147.4.8 https://doi.org/10.11646/zootaxa.4147.4.8 eng eng Mangolia Press http://www.mapress.com/j/zt/article/view/zootaxa.4147.4.8/7101 Copyright (c) 2016 Magnolia press Zootaxa; Vol 4147, No 4: 5 Aug. 2016; 477–489 1175-5334 1175-5326 10.11646/zootaxa.4147.4 Pisces Rajidae; R. miraletus species complex; Raja parva; new species; Eastern Central Atlantic info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2016 ftmagnoliapress https://doi.org/10.11646/zootaxa.4147.4.8 2018-08-24T16:27:22Z An investigation of combined CO1 and NADH2 data for rajid skates referable to Raja miraletus provided evidence that populations ranging from southern Africa to the North-East Atlantic and Mediterranean Sea, once considered to represent a cline, belong to a species complex consisting of at least four valid species. Raja miraletus appears to be confined to the Mediterranean Sea, and the North-East Atlantic from the Bay of Biscay south to Morocco and Madeira. The southernmost species, referable to the resurrected Raja ocellifera, occurs off southern Africa, off Namibia and from False Bay to Durban (South Africa). Two species occur off tropical West Africa, including Raja parva sp. nov. (Senegal, Liberia and Angola but is probably more widespread within the region), and another unidentified species needing further investigation. Raja cf. miraletus, confirmed from Mauritania and Senegal, appears to be a larger skate with a broader disc, more broadly pointed snout, larger spiracles, and a slightly longer and broader tail. Raja parva sp. nov. differs from nominal members of the complex in having an unusually long procaudal tail (exceeding 22% TL), as well as a combination of other external characters. Past investigators observed morphological and anatomical differences between these forms but these were thought to be due to intraspecific variability. They postulated that an upwelling at Cape Blanco (21°N) may have isolated the Mediterranean form (R. miraletus) from Mauritania-Senegal form (now known to be two species). Similarly, the Benguela Current and upwelling off Cape Frio (18°S) were thought to be responsible for separating the Angolan form (R. parva) and South African form (R. ocellifera). Article in Journal/Newspaper North East Atlantic Magnolia press Blanco ENVELOPE(-55.233,-55.233,-61.250,-61.250) False Bay ENVELOPE(-60.366,-60.366,-62.716,-62.716) Zootaxa 4147 4 477 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Pisces Rajidae; R. miraletus species complex; Raja parva; new species; Eastern Central Atlantic |
spellingShingle |
Pisces Rajidae; R. miraletus species complex; Raja parva; new species; Eastern Central Atlantic LAST, PETER R. SÉRET, BERNARD A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex |
topic_facet |
Pisces Rajidae; R. miraletus species complex; Raja parva; new species; Eastern Central Atlantic |
description |
An investigation of combined CO1 and NADH2 data for rajid skates referable to Raja miraletus provided evidence that populations ranging from southern Africa to the North-East Atlantic and Mediterranean Sea, once considered to represent a cline, belong to a species complex consisting of at least four valid species. Raja miraletus appears to be confined to the Mediterranean Sea, and the North-East Atlantic from the Bay of Biscay south to Morocco and Madeira. The southernmost species, referable to the resurrected Raja ocellifera, occurs off southern Africa, off Namibia and from False Bay to Durban (South Africa). Two species occur off tropical West Africa, including Raja parva sp. nov. (Senegal, Liberia and Angola but is probably more widespread within the region), and another unidentified species needing further investigation. Raja cf. miraletus, confirmed from Mauritania and Senegal, appears to be a larger skate with a broader disc, more broadly pointed snout, larger spiracles, and a slightly longer and broader tail. Raja parva sp. nov. differs from nominal members of the complex in having an unusually long procaudal tail (exceeding 22% TL), as well as a combination of other external characters. Past investigators observed morphological and anatomical differences between these forms but these were thought to be due to intraspecific variability. They postulated that an upwelling at Cape Blanco (21°N) may have isolated the Mediterranean form (R. miraletus) from Mauritania-Senegal form (now known to be two species). Similarly, the Benguela Current and upwelling off Cape Frio (18°S) were thought to be responsible for separating the Angolan form (R. parva) and South African form (R. ocellifera). |
format |
Article in Journal/Newspaper |
author |
LAST, PETER R. SÉRET, BERNARD |
author_facet |
LAST, PETER R. SÉRET, BERNARD |
author_sort |
LAST, PETER R. |
title |
A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex |
title_short |
A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex |
title_full |
A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex |
title_fullStr |
A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex |
title_full_unstemmed |
A new Eastern Central Atlantic skate Raja parva sp. nov. (Rajoidei: Rajidae) belonging to the Raja miraletus species complex |
title_sort |
new eastern central atlantic skate raja parva sp. nov. (rajoidei: rajidae) belonging to the raja miraletus species complex |
publisher |
Mangolia Press |
publishDate |
2016 |
url |
http://www.mapress.com/j/zt/article/view/zootaxa.4147.4.8 https://doi.org/10.11646/zootaxa.4147.4.8 |
long_lat |
ENVELOPE(-55.233,-55.233,-61.250,-61.250) ENVELOPE(-60.366,-60.366,-62.716,-62.716) |
geographic |
Blanco False Bay |
geographic_facet |
Blanco False Bay |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Zootaxa; Vol 4147, No 4: 5 Aug. 2016; 477–489 1175-5334 1175-5326 10.11646/zootaxa.4147.4 |
op_relation |
http://www.mapress.com/j/zt/article/view/zootaxa.4147.4.8/7101 |
op_rights |
Copyright (c) 2016 Magnolia press |
op_doi |
https://doi.org/10.11646/zootaxa.4147.4.8 |
container_title |
Zootaxa |
container_volume |
4147 |
container_issue |
4 |
container_start_page |
477 |
_version_ |
1766138767662383104 |