Resumo Foi avaliada a eficácia larvicida do lotilaner (Credeli®) no tratamento de cães naturalmente infestados com larvas de Dermatobia hominis. Foram medicados 12 cães, apresentando pelo menos três larvas vivas de D. hominis. Os animais foram medicados por via oral com dose única não inferior a 20 mg/kg de lotilaner. Após a administração desse medicamento, os animais permaneceram em seus domicílios, e foram feitas observações para verificar o efeito larvicida 6 horas após o tratamento. Larvas vivas foram consideradas quaisquer parasitas que exibissem motilidade após a remoção. Para cada animal foi utilizada a fórmula: 100 x [(total de larvas vivas antes do tratamento - total de larvas vivas após o tratamento) /total de larvas vivas antes do tratamento] como critério para avaliar a eficácia do lotilaner. Foram contadas 98 larvas em 12 cães, com média de 8,1 larvas por animal. A eficácia do lotilaner foi de 80,6%. Dezenove larvas foram encontradas vivas, porém apresentando hipomobilidade e comportamento letárgico. No entanto, vale ressaltar que a avaliação foi realizada apenas 6 horas após a administração do medicamento. Lotilaner, administrado por via oral em dose única de 20 mg/kg, apresentou eficácia de 80,6%, seis horas após o tratamento de cães naturalmente infestados por D. hominis. Credeli® Credeli (Credeli® hominis 1 D 2 mgkg mg kg medicamento domicílios remoção fórmula 10 9 81 8 8, 806 80 80,6% letárgico entanto Lotilaner (Credeli 80,6 80,
Abstract An evaluation was made of the larvicidal efficacy of lotilaner (Credeli®) in the treatment of dogs naturally infested with Dermatobia hominis larvae. A total of 12 dogs presenting at least three live D. hominis larvae were medicated. The animals were medicated orally with a single dose of no less than 20 mg/kg lotilaner. After drug administration, the animals remained at their homes, and observations were made to verify the larvicidal effect 6 hours after treatment. Live larvae were considered any parasite that exhibited motility after removal. For each animal was using the formula: 100 x [(total of live larvae before treatment − total live larvae after treatment) /total of live larvae before treatment] as criteria for evaluating lotilaner efficacy. A total of 98 larvae were counted in 12 dogs, with an average of 8.1 larvae per animal. The effectiveness of lotilaner was 80.6%. Nineteen larvae were found alive, albeit presenting hypomobility and lethargic behavior. However, note that the evaluation was performed just six hours after administration of the drug. Lotilaner administered orally in a single dose of 20 mg/kg showed 80.6% efficacy six hours after treating dogs naturally infested with D. hominis. Credeli® Credeli (Credeli® 1 D 2 mgkg mg kg homes removal formula 10 9 81 8 8. 806 80 alive behavior However 80.6 (Credeli 80.