Efficacy and Safety of Topical Fipronil 1% and Deltamethrin 0.1% in Water Buffaloes (Bubalus bubalis) Naturally Infested by Haematopinus tuberculatus

Haematopinus tuberculatus is the main arthropod affecting buffaloes around the world. It causes intense itching and restlessness, altering feeding habits, thus reducing animal productivity. This parasitosis is seldom studied, as it does not lead to significant animal mortality or financial losses. In this project, we evaluated the efficacy and safety of two commercially available products for control of pediculosis in naturally infested buffaloes. A total of 24 milk producing, clinically healthy female buffaloes that were naturally infested by lice were included in this study. Animals were equally distributed into two groups: group 1 was treated with a single dose of pour on Fipronil (1%, Carval de Colombia, 1 ml of product per 10 kg of live weight). Group 2 was treated with a single dose of deltamethrin (5%, Bioara, SA), at a final concentration of 0,1% applied with an aspersion pump as a single bath of 4 liters of diluted solution per animal. Lice were counted weekly from day 1 to day 58 post-treatment. Up to day 23 post-treatment, no significant differences in efficacy were observed between products.Fipronil 1% consistently exhibited an efficacy above 70% from day 8 and until 30 day of the study. These results suggest that both products are efficient and safe to control lice infestations in buffaloes. However, fipronil 1% exhibited a greater residual effect, which reduces the number of baths required to treat infested animals, and reduces the probability of selecting for drug-resistant lice populations

Sarcopromusca pruna (Diptera Muscidae): phoretic for Dermatobia hominis (Diptera: Cuterebridae) eggs in Colombia

Objective: the finding of Sarcopromusca pruna as a phoretic for Dermatobia hominis eggs is described here. The later is a frequent cattle ectoparasite (human botfly) known as "nuche" in Colombia. Methods: the phoretic flies were captured in a village at San Rafael municipality (Antioquia) using Malaise-typetraps installed during the months of June to August, 2004. Each Sarcopromusca specimen carried a minimum of 19 and, in some cases, up to 23 eggs of D. hominis on the right or left side of the abdominal region. Results and conclusion:This is a new report of Sarcopromusca pruna behaving as a phoretic fly for Dermatobia hominis eggs observed in Colombia.Objetivo: relatamos a descoberta de Sarcopromusca pruna (S. pruna) como forético dos ovos de Dermatobia hominis (D. hominis), ectoparasita comumente conhecido na Colômbia como "nuche" e no Brasil como "mosca-varejeira". Métodos: as moscas foréticas foram capturadas no município de San Rafael (Antioquia), utilizando armadilhas de intercepção tipo Malaise instaladas durante os meses de junho a agosto de 2004. Cada espécime Sarcopromusca carregava entre 19 e 23 ovos de D. hominis no lado direito ou esquerdo da região abdominal. Resultados y conclusões: este é um novo reporte da S. pruna como forético de ovos de Dermatobia hominis na Colômbia.Objetivo: Se describe el hallazgo de Sarcopromusca pruna (S. pruna) como forético de huevos Dermatobia hominis (D. hominis) ectoparásito comúnmente conocido en Colombia como "nuche". Metódo: las moscas foréticas fueron capturadas en una vereda del municipio de San Rafael (Antioquia) usando trampas de intercepción tipo Malaise instaladas durante los meses de junio a agosto de 2004. Cada espécimen de Sarcopromusca transportaba un número mínimo de 19 y en algunos casos hasta 23 huevos de D. hominis en el lado derecho o en el izquierdo de la región abdominal. Resultados y conclusión: este es un nuevo reporte de S. pruna como forético de huevos de Dermatobia hominis en Colombia