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dc.contributor.authorSoekoe, M.
dc.contributor.authorVan der Bank, F.H.
dc.contributor.authorSmit, N.J.
dc.date.accessioned2015-03-12T09:32:46Z
dc.date.available2015-03-12T09:32:46Z
dc.date.issued2013
dc.identifier.citationSoekoe, M. et al. 2013. Determining the most suitable method of otolith preparation for estimating the age of tigerfish, hydrocynus vittatus in the Pongolapoort Dam, South Africa. African Zoology. 48(1):187-192. [http://africanzoology.journals.ac.za/pub]en_US
dc.identifier.issn1562-7020
dc.identifier.issn2224-073X (Online)
dc.identifier.urihttp://hdl.handle.net/10394/13560
dc.description.abstractThe growth, morphology and relative age estimates of the lapillus and asteriscus otoliths were studied to gain a better understanding of the development and ageing of tigerfish otoliths. Asteriscus and lapillus growth showed good to excellent linear relationships for thickness (r2 = 0.547), length (r2 = 0.741), diameter (r2 = 0.799) and mass (r2 = 0.929). Otolith vs. somatic growth showed the highest correlations between lapillus and standard lengths (r2 = 0.659) as well as asteriscus mass and standard length (61%). Subject to further testing, it is believed that these near-linear relationships show promise for future use in tigerfish ageing studies. The possibility of using otolith morphometrics in tigerfish ageing studies will not only be cheaper, faster and easier but also more precise by avoiding reader error and bias. Indices of bias and precision showed sectioned lapilli to be the most precise ageing technique in terms of between-reader (CV = 7.85%; APE = 5.55%) and between-structure (CV = 6.20; APE = 4.20%) analyses.en_US
dc.description.urihttp://africanzoology.journals.ac.za/pub/article/view/631/883
dc.description.urihttp://africanzoology.journals.ac.za/pub
dc.language.isoenen_US
dc.publisherZoological Society of Southern Africa [SU LIS]en_US
dc.subjectAgeen_US
dc.subjectasteriscien_US
dc.subjectlapillien_US
dc.subjectotolithen_US
dc.subjecttigerfishen_US
dc.titleDetermining the most suitable method of otolith preparation for estimating the age of tigerfish, hydrocynus vittatus in the Pongolapoort Dam, South Africaen_US
dc.typeArticleen_US
dc.contributor.researchID21250545 - Smit, Nicholas Jacobus


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