The use of eugenol in bettas: a study of different concentrations and successive administrations

Authors

  • Thiago El Hadi Perez FABREGAT Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina (UDESC) http://orcid.org/0000-0003-3718-5224 (unauthenticated)
  • Manuela Martins PEREIRA Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina (UDESC)
  • Toshiro Barreto ASSAHINA Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina (UDESC)
  • José Augusto BROGGI Centro de Ciências Agroveterinárias, Universidade do Estado de Santa Catarina (UDESC)

Keywords:

anestesia, Betta splendens, ornamental fish

Abstract

The objective of this study was to evaluate the effects of different concentrations and successive administrations of eugenol on the anesthetic response in bettas (Betta splendens). Two experiments were conducted. In the first trial, the fish were exposed to different concentrations of eugenol (70.0, 87.5, 105.0, 122.5 e 140.0 mg L-1). Only one concentration of anesthetic was evaluated in the second experiment (140.0 mg L-1), which was applied for three successive days. In the first experiment, the increase of the concentration of the eugenol reduced the time to induce total anesthesia. In the second experiment, the time to induce total anesthesia was longer on the third day as compared to the first day. It is possible to conclude that an increase in the concentration of eugenol accelerated the anesthetic response in the bettas, though without affecting the recovery. The concentration of 140.0 mg L-1 is the most recommended for the handling of bettas.

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Published

2018-07-13

Issue

Vol. 41 No. 2 (2015): BOLETIM DO INSTITUTO DE PESCA

Section

Short Communication

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