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Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Biological Sciences
2014
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| _version_ | 1867613166978990080 |
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| access_status_str | Open Access |
| author | Pretorius, Carrie Ann |
| author2 | Griffiths, Charles L |
| author_browse | Griffiths, Charles L Pretorius, Carrie Ann |
| author_facet | Griffiths, Charles L Pretorius, Carrie Ann |
| author_sort | Pretorius, Carrie Ann |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/10662 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:50.330Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| 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:11427/10662 Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters Pretorius, Carrie Ann Griffiths, Charles L Zoology Includes bibliographical references. There are at least 500 species of sharks inhabiting the world's oceans and very little is known about the reproductive biology of most of these species. By observing Scyliorhinids, which exhibit oviparous reproductive behaviour, we can further understand the nature of elasmobranch reproductive behaviour, including embryo growth and development. Two Scyliorhinid species endemic to South African waters are investigated here, Poroderma pantherinum, commonly known as the Leopard catshark and Haploblepharus pictus the Dark shyshark. Observations were made both in the field and in the laboratory to ascertain differences in reproductive behaviour. In the field P. pantherinum laid their eggs at an average depth of 15.7 m - ? 28.8 and their preferred choice of substratum, onto which their eggs were singly attached, were seafans. H. pictus, on the other hand, laid their eggs at an average depth of 3.9 m - ? 15.9 and their preferred choice of substratum, onto which they attach their eggs predominantly in pairs, was the seaweed Bifurcariopis capensis. 2014-12-30T19:56:41Z 2014-12-30T19:56:41Z 2012 Master Thesis Masters MSc http://hdl.handle.net/11427/10662 eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Zoology Pretorius, Carrie Ann Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters |
| thesis_degree_str | Master's |
| title | Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters |
| title_full | Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters |
| title_fullStr | Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters |
| title_full_unstemmed | Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters |
| title_short | Factors influencing the development and mortality rate of shy and cat shark embryos in South African waters |
| title_sort | factors influencing the development and mortality rate of shy and cat shark embryos in south african waters |
| topic | Zoology |
| url | http://hdl.handle.net/11427/10662 |
| work_keys_str_mv | AT pretoriuscarrieann factorsinfluencingthedevelopmentandmortalityrateofshyandcatsharkembryosinsouthafricanwaters |