Meristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africa

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dc.contributor.advisorMoloney, Coleen Len_ZA
dc.contributor.advisorVan der Lingen, Carl Den_ZA
dc.contributor.authorWessels, Greaen_ZA
dc.date.accessioned2015-01-06T12:12:20Z
dc.date.available2015-01-06T12:12:20Z
dc.date.issued2009en_ZA
dc.descriptionIncludes abstract.en_ZA
dc.descriptionIncludes bibliographical references (p. 72-81).en_ZA
dc.description.abstractMeristic counts and morphometric measurements were made on previously frozen sardine Sardinops sagax to determine whether there is a difference in the shape of sardine from different areas around southern Africa. Because freezing influences body size, eight different freezing periods were examined to determine the effects of freezing duration on the caudal length, weight and 21 morphometric measurements of sardine collected from commercial catches at Gans Bay and Saldanha Bay, South Africa. The relative weight loss of sardine ranged between 0.86 and 2.49% and the relative loss in caudal length ranged between 1.57 and 2.54%. Most of the morphometric measurements showed small changes with increasing freezing period and, if they decreased, the decrease was gradual. Samples for the morphometric study were frozen between 12 and 17 weeks before analysis. Independent sample t-tests between these freezing periods confirmed that there was no change in the morphometric measurements over this five week period. In total, 35 samples were collected from three main regions: Namibia, the South African west coast and the South African south and east coast.en_ZA
dc.identifier.apacitationWessels, G. (2009). <i>Meristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africa</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Oceanography. Retrieved from http://hdl.handle.net/11427/11575en_ZA
dc.identifier.chicagocitationWessels, Grea. <i>"Meristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africa."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Oceanography, 2009. http://hdl.handle.net/11427/11575en_ZA
dc.identifier.citationWessels, G. 2009. Meristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africa. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Wessels, Grea AB - Meristic counts and morphometric measurements were made on previously frozen sardine Sardinops sagax to determine whether there is a difference in the shape of sardine from different areas around southern Africa. Because freezing influences body size, eight different freezing periods were examined to determine the effects of freezing duration on the caudal length, weight and 21 morphometric measurements of sardine collected from commercial catches at Gans Bay and Saldanha Bay, South Africa. The relative weight loss of sardine ranged between 0.86 and 2.49% and the relative loss in caudal length ranged between 1.57 and 2.54%. Most of the morphometric measurements showed small changes with increasing freezing period and, if they decreased, the decrease was gradual. Samples for the morphometric study were frozen between 12 and 17 weeks before analysis. Independent sample t-tests between these freezing periods confirmed that there was no change in the morphometric measurements over this five week period. In total, 35 samples were collected from three main regions: Namibia, the South African west coast and the South African south and east coast. DA - 2009 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2009 T1 - Meristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africa TI - Meristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africa UR - http://hdl.handle.net/11427/11575 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/11575
dc.identifier.vancouvercitationWessels G. Meristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africa. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Oceanography, 2009 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/11575en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Oceanographyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherApplied Marine Scienceen_ZA
dc.titleMeristic and morphometric variation among sardine Sardinops sagax around the coast of southern Africaen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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