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Hematological biomarkers in tilapia: Effect of residual concentrations of clove oil and florfenicol

Nascimento JL;
Ishikawa MM;
Queiroz JF;
Gil JA;
Smaniotto F;
Dias PS;
Vallim JH

Júlia Lourenço do Nascimento

Marcia Mayumi Ishikawa

Julio Ferraz de Queiroz

Juliana Augusta Gil

Fernanda Smaniotto

Patricia da Silva Dias

José Henrique Vallim


Keywords

Oreochromis niloticus
Eugenol
Antibiotic
Pollutant
Residues

Abstract

The use of clove oil as an anesthetic in fish management and florfenicol in the treatment of bacteriosis can leave residues in water causing damage to fish and environmental health. Hematological biomarkers are changes in blood parameters detected in organisms exposed to some agent or pollutant in water. Residues of clove oil and florfenicol on water may interfere with hematological biomarkers, impairing their interpretation during water quality monitoring. The objective of this study was to evaluate the effect of residual concentrations of clove oil and florfenicol on water on the response of hematological biomarkers in tilapia. The blood variables were evaluated in juvenile tilapias maintained for three and seven days in an aquarium system with a useful volume of 200 L without water recirculation.  Three treatments with three replications were used, each aquarium containing nine tilapias as a sampling unit. Experiment 1 was composed of the treatments: control (without diluent and without clove oil), clove oil at a concentration of 0.5mg/L with alcohol diluent at a concentration of 10μL/L and only alcohol diluent at a concentration of 10μL/L. Experiment 2 was composed of the treatments: 0.0 (control); 0.5 mg/L and 5 mg/L florfenicol. The blood variables collected during the two experiments showed no significant difference, as did the water monitoring parameters, such as pH, dissolved oxygen, temperature, conductivity, and total ammonia. Residual concentrations of clove oil and florfenicol in water do not interfere in the response of hematological biomarkers in tilapia.

 

DOI:https://doi.org/10.56238/sevened2023.004-080


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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Copyright (c) 2023 Júlia Lourenço do Nascimento, Marcia Mayumi Ishikawa, Julio Ferraz de Queiroz, Juliana Augusta Gil, Fernanda Smaniotto, Patricia da Silva Dias, José Henrique Vallim

Author(s)

  • Júlia Lourenço do Nascimento
  • Marcia Mayumi Ishikawa
  • Julio Ferraz de Queiroz
  • Juliana Augusta Gil
  • Fernanda Smaniotto
  • Patricia da Silva Dias
  • José Henrique Vallim