Evaluation of marking efficiency of different alizarin red s concentrations on body fish structures in Oreochromis niloticus (Perciformes: Cichlidae) juveniles

  • Ibáñez A
  • Rodríguez-Canto A
  • Cortés-Martínez J
 et al. 
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Abstract

The use of alizarin red S (ARS) marked tilapias could provide valuable fisheries management information to evaluate fish stocking events and may facilitate aquaculture management practices. As a new technique in fishes, the aim of this study was to compare and evaluate the chemical marks produced in tilapia juveniles by ARS through two treatments: 1) 12 hours of immersion and 2) immersion after osmotic induction. This was analyzed at three concentrations: 50, 75 and 100mg/l, and in three structures: otoliths, fish scales and caudal fin rays of Oreochromis niloticus juveniles. After three culture months 80% of specimens were analyzed and significant differences (p

Author-supplied keywords

  • Alizarin red
  • Chemical mark
  • Dye
  • Fish stocking
  • Stock enhancement
  • Tilapia

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Authors

  • Ana L. Ibáñez

  • Antonio Rodríguez-Canto

  • Jasmín Cortés-Martínez

  • José L. García-Calderón

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