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Experimental cultivation of the South African scallop Pecten sulcicostatus
Although scallops have a high economic value, they have yet to be commercially harvested or farmed in South Africa. Of the 29 Pectinid species recorded on the southern African coastline, Pecten sulcicostatus is the only species considered suitable for aquaculture, due to its large size. An investiga...
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| Format: | Thesis |
| Language: | Eng |
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Department of Biological Sciences
2016
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| _version_ | 1867613167659515904 |
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| access_status_str | Open Access |
| author | Arendse, Dale Cheryle |
| author2 | Griffiths, Charles L |
| author_browse | Arendse, Dale Cheryle Griffiths, Charles L |
| author_facet | Griffiths, Charles L Arendse, Dale Cheryle |
| author_sort | Arendse, Dale Cheryle |
| collection | Thesis |
| description | Although scallops have a high economic value, they have yet to be commercially harvested or farmed in South Africa. Of the 29 Pectinid species recorded on the southern African coastline, Pecten sulcicostatus is the only species considered suitable for aquaculture, due to its large size. An investigation of the suitability of P. sulcicostatus for farming in South Africa forms the basis of this study. The successful cultivation of P. sulcicostatus will depend on successful rearing from fertilized egg to market size, and achieving a growth rate comparable to that of other commercial scallop species. This study aimed to examine the reproductive life cycle, in order to establish whether this species can be artificially conditioned to produce ripe gametes throughout the year and to investigate the various stages of cultivation, in order to determine whether this species is viable for farming. This thesis therefore describes the reproductive cycle of P. sulcicostatus and also reports on the first assessment of broodstock conditioning, larval rearing and the grow-out of spat. The reproductive study was undertaken by monthly collection of scallops in their natural habitat in False Bay from August 2004 - October 2005 and again from August 2010 - August 2011. The reproductive cycle was assessed by means of both gonadosomatic index (GSI) and qualitative and quantitative histological investigation. Environmental parameters were also monitored to determine any linkage to the reproductive cycle. The reproductive cycle was seasonal, with a peak spawning period in winter. A resting period appeared absent, as individuals started producing new gametes immediately after spawning, indicating a possible lack of synchronicity. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/19972 |
| 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 | 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:11427/19972 Experimental cultivation of the South African scallop Pecten sulcicostatus Arendse, Dale Cheryle Griffiths, Charles L Pitcher, Grant C Zoology Although scallops have a high economic value, they have yet to be commercially harvested or farmed in South Africa. Of the 29 Pectinid species recorded on the southern African coastline, Pecten sulcicostatus is the only species considered suitable for aquaculture, due to its large size. An investigation of the suitability of P. sulcicostatus for farming in South Africa forms the basis of this study. The successful cultivation of P. sulcicostatus will depend on successful rearing from fertilized egg to market size, and achieving a growth rate comparable to that of other commercial scallop species. This study aimed to examine the reproductive life cycle, in order to establish whether this species can be artificially conditioned to produce ripe gametes throughout the year and to investigate the various stages of cultivation, in order to determine whether this species is viable for farming. This thesis therefore describes the reproductive cycle of P. sulcicostatus and also reports on the first assessment of broodstock conditioning, larval rearing and the grow-out of spat. The reproductive study was undertaken by monthly collection of scallops in their natural habitat in False Bay from August 2004 - October 2005 and again from August 2010 - August 2011. The reproductive cycle was assessed by means of both gonadosomatic index (GSI) and qualitative and quantitative histological investigation. Environmental parameters were also monitored to determine any linkage to the reproductive cycle. The reproductive cycle was seasonal, with a peak spawning period in winter. A resting period appeared absent, as individuals started producing new gametes immediately after spawning, indicating a possible lack of synchronicity. 2016-06-09T11:19:29Z 2016-06-09T11:19:29Z 2015 Doctoral Thesis Doctoral PhD http://hdl.handle.net/11427/19972 Eng application/pdf Department of Biological Sciences Faculty of Science University of Cape Town |
| spellingShingle | Zoology Arendse, Dale Cheryle Experimental cultivation of the South African scallop Pecten sulcicostatus |
| thesis_degree_str | Doctoral |
| title | Experimental cultivation of the South African scallop Pecten sulcicostatus |
| title_full | Experimental cultivation of the South African scallop Pecten sulcicostatus |
| title_fullStr | Experimental cultivation of the South African scallop Pecten sulcicostatus |
| title_full_unstemmed | Experimental cultivation of the South African scallop Pecten sulcicostatus |
| title_short | Experimental cultivation of the South African scallop Pecten sulcicostatus |
| title_sort | experimental cultivation of the south african scallop pecten sulcicostatus |
| topic | Zoology |
| url | http://hdl.handle.net/11427/19972 |
| work_keys_str_mv | AT arendsedalecheryle experimentalcultivationofthesouthafricanscalloppectensulcicostatus |