Effects of preservation method on length and weight of pond raised tilapia (Oreochromis niloticus, Linnaeus, 1898) and African mirror carp (Cyprinus capio, Ruppell, 1832)

  • SA Nwafili
  • CN Onwuka
Keywords: Morphometric characters, species identification, taxonomy, dimensional change, rational exploitation

Abstract

Length and weight measurements of fish used for taxonomy and determination of length-weight relationship are taken from preserved specimen. This study sets out to investigate the effects of two preservatives, 70% alcohol and 10% formalin and freezing method on the length and weight of preserved specimens of tilapia ( Oreochromis niloticus) and African mirror carp (Cyprinus carpio). The results showed different effects. Formalin showed the least effect. However, there was no significant difference (P>0.05) in length and weight after preservation in any of the preservatives and freezing after 5 weeks.

Keywords: Morphometric characters, species identification, taxonomy, dimensional change, rational exploitation.

Published
2013-09-11
Section
Articles

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eISSN: 0189-8779