A Comparison of Three Techniques for Fluorochrome Marking of Juvenile Clarias gariepinus Otoliths

Reece Wartenberg; Anthony J. Booth; Olaf L.F. Weyl

doi:10.3377/004.046.0119

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1 April 2011 A Comparison of Three Techniques for Fluorochrome Marking of Juvenile Clarias gariepinus Otoliths

Reece Wartenberg, Anthony J. Booth, Olaf L.F. Weyl

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African Zoology, 46(1):72-77 (2011). https://doi.org/10.3377/004.046.0119

Abstract

Intramuscular injection of the antibiotic Oxytetracycline (OTC) has been the only method previously employed for chemically marking C. gariepinus otoliths for ageing studies. This study compared intramuscular injection, immersion, and dietary incorporation methods of administering OTC to determine the most effective technique. No differences in either growth or mortality were found between experimental groups while intramuscular injection of OTC was found to be superior to either mass immersion or dietary inclusion of OTC when marking Clarias gariepinus otoliths.

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Reece Wartenberg, Anthony J. Booth, and Olaf L.F. Weyl "A Comparison of Three Techniques for Fluorochrome Marking of Juvenile Clarias gariepinus Otoliths," African Zoology 46(1), 72-77, (1 April 2011). https://doi.org/10.3377/004.046.0119

Received: 5 November 2010; Accepted: 1 January 2011; Published: 1 April 2011

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