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The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei)
The systematics of the Rajidae (skates) of southern Africa are revised, with a view to clearing up the confusion which now exists, and to forming a reliable basis for future biological studies. To date, some 150 - 160 species have been described for the genus Raja alone. The existing confusion proba...
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| Format: | Thesis |
| Language: | English |
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Department of Biological Sciences
2016
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| _version_ | 1867614011155021824 |
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| access_status_str | Open Access |
| author | Hulley, Percy Alexander |
| author2 | Millard, N A H |
| author_browse | Hulley, Percy Alexander Millard, N A H |
| author_facet | Millard, N A H Hulley, Percy Alexander |
| author_sort | Hulley, Percy Alexander |
| collection | Thesis |
| description | The systematics of the Rajidae (skates) of southern Africa are revised, with a view to clearing up the confusion which now exists, and to forming a reliable basis for future biological studies. To date, some 150 - 160 species have been described for the genus Raja alone. The existing confusion probably results from the sexual dimorphism which occurs within the species and variation in form with growth. Modern methods advocate the use of characters, other than external features, the most reliable being the clasper anatomy, neurocranial structure and vertebral count, and these principles have been applied in the present revision. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/18104 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:45:15.399Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Biological Sciences |
| publisherStr | Department of Biological Sciences |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/18104 The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei) Hulley, Percy Alexander Millard, N A H Zoology Skates (Fishes) The systematics of the Rajidae (skates) of southern Africa are revised, with a view to clearing up the confusion which now exists, and to forming a reliable basis for future biological studies. To date, some 150 - 160 species have been described for the genus Raja alone. The existing confusion probably results from the sexual dimorphism which occurs within the species and variation in form with growth. Modern methods advocate the use of characters, other than external features, the most reliable being the clasper anatomy, neurocranial structure and vertebral count, and these principles have been applied in the present revision. 2016-03-21T19:24:01Z 2016-03-21T19:24:01Z 1971 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/18104 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Zoology Skates (Fishes) Hulley, Percy Alexander The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei) |
| thesis_degree_str | Doctoral |
| title | The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei) |
| title_full | The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei) |
| title_fullStr | The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei) |
| title_full_unstemmed | The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei) |
| title_short | The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei) |
| title_sort | origin interrelationship and distribution of southern african rajidae chondrichthyes batoidei |
| topic | Zoology Skates (Fishes) |
| url | http://hdl.handle.net/11427/18104 |
| work_keys_str_mv | AT hulleypercyalexander theorigininterrelationshipanddistributionofsouthernafricanrajidaechondrichthyesbatoidei AT hulleypercyalexander origininterrelationshipanddistributionofsouthernafricanrajidaechondrichthyesbatoidei |