Experimental cultivation of the South African scallop Pecten sulcicostatus

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dc.contributor.advisorGriffiths, Charles Len_ZA
dc.contributor.advisorPitcher, Grant Cen_ZA
dc.contributor.authorArendse, Dale Cheryleen_ZA
dc.date.accessioned2016-06-09T11:19:29Z
dc.date.available2016-06-09T11:19:29Z
dc.date.issued2015en_ZA
dc.description.abstractAlthough 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.en_ZA
dc.identifier.apacitationArendse, D. C. (2015). <i>Experimental cultivation of the South African scallop Pecten sulcicostatus</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/19972en_ZA
dc.identifier.chicagocitationArendse, Dale Cheryle. <i>"Experimental cultivation of the South African scallop Pecten sulcicostatus."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2015. http://hdl.handle.net/11427/19972en_ZA
dc.identifier.citationArendse, D. 2015. Experimental cultivation of the South African scallop Pecten sulcicostatus. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Arendse, Dale Cheryle AB - 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. DA - 2015 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2015 T1 - Experimental cultivation of the South African scallop Pecten sulcicostatus TI - Experimental cultivation of the South African scallop Pecten sulcicostatus UR - http://hdl.handle.net/11427/19972 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/19972
dc.identifier.vancouvercitationArendse DC. Experimental cultivation of the South African scallop Pecten sulcicostatus. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2015 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/19972en_ZA
dc.language.isoEngen_ZA
dc.publisher.departmentDepartment of Biological Sciencesen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherZoologyen_ZA
dc.titleExperimental cultivation of the South African scallop Pecten sulcicostatusen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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