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Eficácia do diflubenzuron no controle de <em>Dolops carvalhoi</em> (Crustacea: Branchiura) em jovens pacus <em>Piaractus mesopotamicus</em> (Osteichthyes: Characidae) naturalmente infectados

2005; Editora da Universidade Estadual de Maringá (Eduem); Volume: 27; Issue: 2 Linguagem: Inglês

10.4025/actascianimsci.v27i2.1235

ISSN

1807-8672

Autores

Flávio Ruas de Moraes, Sergio Henrique Canello Shalch, Marco Antônio de Andrade Belo, Vando Eduardo Soares, Julieta Rodini Engrácia de Moraes,

Tópico(s)

Fish Biology and Ecology Studies

Resumo

This research evaluated the therapeutic efficacy of diflubenzuron against Dolops carvalhoi (Crustacean: Branchiura) in Piaractus mesopotamicus (Osteichthyes: Characidae) naturally infested. The drug was applied three times, at a dose of 2.0 mg/L of water, in the form of baths within thirty minutes and an interval of 24 hours. A control group was submitted to the same procedure, but without pharmaco in the water. The parasitological evaluation showed that the drug effectiveness was 97.2%. In the treated group there were glycemia reduction, increase in the erythrocyte number, decrease in the percentage of special granulocytic cells and increase in the number of circulant trombocytes similar to the parasites elimination when compared to the control group. Results showed an important improvement in fish health

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