The effects of diflubenzuron immersion bath on sperm of jundiá Rhamdia quelen with Lernaea cyprinacea

Rodrigo Gasparoto Mabilia, Silvia Maria Guimarães de Souza, Eneder Rosana Oberst

Abstract


The effects of therapeutics products and other poluents over fish sperm have been research issues. The diflubenzuron (DFB) is widely used against fish ectoparasites. For USA and Europe, its use is restricted, due the large potential of environment impact; but in south of Brazil, is used by most of fishfarmers on 24 hours’ immersion bath. The present study submitted 64 jundias (Rhamdia quelen), infested by Lernaea cyprinacea under four treatments (0,0mg/L; 0,01mg/L; 0,1mgmg/L and 1mg/L) at immersion bath during 24 hours. At final of experimental period, we carried through the collect and evaluation of fish sperm. No differences were found over evaluated parameters: volume, aspect (appearance and color), motility duration and concentration of sperm. The product showed inefficient as 24 hours’ immersion bath against adult parasites and copepodites.


Keywords


Sperm; Motility; Concentration of sperm; Bath; Rhamdia; Laernaea cyprinacea; Diflubenzuron.



DOI: http://dx.doi.org/10.5433/1679-0359.2008v29n3p661

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional