n African Zoology - Determining the most suitable method of otolith preparation for estimating the age of tigerfish, in the Pongolapoort Dam, South Africa - : short communication

Volume 48, Issue 1
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X
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This study compares sectioned and whole lapillus and asterisci otoliths as suitable structures for ageing tigerfish, . Fifty tigerfish were collected from the Pongolapoort Dam, KwaZulu-Natal, South Africa. Growth zone counts on sectioned lapilli showed the greatest percentage agreement (52%) and highest precision (APE = 4.77%, CV = 6.20%). Growth zone counts were symmetrically distributed between structures (Bowker's tests > 0.125). Between-reader analysis also showed sectioned lapilli to have the highest percentage agreement (68%) and best precision (APE = 5.55%, CV = 7.85%).

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