Growth and otolith zone formation of Namibian hake, merluccius capensis

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dc.contributor.advisorJarre, Astriden_ZA
dc.contributor.advisorMoloney, Coleen Len_ZA
dc.contributor.advisorRoux, Jean-Paulen_ZA
dc.contributor.advisorDurholtz, M Deonen_ZA
dc.contributor.authorWilhelm, Margit Renateen_ZA
dc.date.accessioned2014-12-31T20:00:39Z
dc.date.available2014-12-31T20:00:39Z
dc.date.issued2012en_ZA
dc.descriptionIncludes bibliographical references.en_ZA
dc.description.abstractLife history traits and tactics of commercially important Namibian shallow-water hake, Merluccius capensis, were investigated in relation to their environment. A time series of length-frequency distributions (LFDs) from otoliths collected from fur seal scat samples was used to identify cohorts and calculate the approximate hatchdates and growth rates of young M. capensis from 1994 to 2009. Monthly otolith samples of five of these cohorts (1996, 1998, 2002, 2005 and 2006) were used to evaluate the translucent zone periodicity over the first 21 months of their life. Additionally, LFDs from research surveys and commercial samples were used to calculate growth rates for M. capensis up to 65 cm total length (TL), and to further validate the translucent zone formation of three of the five cohorts (1996, 1998 and 2002) on fish up to 3.5 years old.en_ZA
dc.identifier.apacitationWilhelm, M. R. (2012). <i>Growth and otolith zone formation of Namibian hake, merluccius capensis</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Biological Sciences. Retrieved from http://hdl.handle.net/11427/10785en_ZA
dc.identifier.chicagocitationWilhelm, Margit Renate. <i>"Growth and otolith zone formation of Namibian hake, merluccius capensis."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2012. http://hdl.handle.net/11427/10785en_ZA
dc.identifier.citationWilhelm, M. 2012. Growth and otolith zone formation of Namibian hake, merluccius capensis. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Wilhelm, Margit Renate AB - Life history traits and tactics of commercially important Namibian shallow-water hake, Merluccius capensis, were investigated in relation to their environment. A time series of length-frequency distributions (LFDs) from otoliths collected from fur seal scat samples was used to identify cohorts and calculate the approximate hatchdates and growth rates of young M. capensis from 1994 to 2009. Monthly otolith samples of five of these cohorts (1996, 1998, 2002, 2005 and 2006) were used to evaluate the translucent zone periodicity over the first 21 months of their life. Additionally, LFDs from research surveys and commercial samples were used to calculate growth rates for M. capensis up to 65 cm total length (TL), and to further validate the translucent zone formation of three of the five cohorts (1996, 1998 and 2002) on fish up to 3.5 years old. DA - 2012 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2012 T1 - Growth and otolith zone formation of Namibian hake, merluccius capensis TI - Growth and otolith zone formation of Namibian hake, merluccius capensis UR - http://hdl.handle.net/11427/10785 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/10785
dc.identifier.vancouvercitationWilhelm MR. Growth and otolith zone formation of Namibian hake, merluccius capensis. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Biological Sciences, 2012 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/10785en_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.titleGrowth and otolith zone formation of Namibian hake, merluccius capensisen_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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