Tesis Medicina Veterinaria

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Author: search.filters.author.Altamirano Cevallos, Daniela Dessire

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    Prevalencia de ectoparásitos artrópodos de cuyes (Cavia porcellus) y su control con Beauveria bassiana en condiciones de laboratorio
    (2024-08) Altamirano Cevallos, Daniela Dessire; Vásquez Freytez, Carlos Luis
    Production of guinea pig (Cavia porcellus) can be affected by different factors, including skin problems, especially ectoparasites, which also predispose to secondary infections. Given the high incidence of ectoparasites, constant control measures are required, which are generally done through the use of chemical products. Therefore, in this research, the prevalence of ectoparasitic arthropods in guinea pigs in the Cevallos municipality and their control with Beauveria bassiana in laboratory conditions were evaluated. Firstly, samples were taken in the different localities in Cevallos (Vinces, Jesús del Gran Poder, Barrio La Amistad, Las Playas, Andignato, Tambo, San Pedro, Mirador, Santo Domingo, La Floresta, Belén, Santa Rosa and Agua Santa) to identify the ectoparasite species. The effect of different concentrations of a commercial product based on the entomopathogenic fungus (Beauvetic) was then evaluated: D1= 1x105 conidia (T1), D2= 1x106 conidia (T2), D3= 1 x107 conidia (T3) and a control treatment (D0) was used. Three species of ectoparasites associated with guinea pigs were identified in the different locations in the Cevallos canton, two species of mites of the genus Ornithonyssus (Ornithonyssus sp1 and Ornithonyssus sp2) and one species of chewing louse, Trimenopon hispidum, within the Trimenoponidae family. In general, mites showed a higher prevalence than lice in all the sampled areas. The effect of increasing the different concentrations of B. bassiana on the mortality of the two species of ectoparasitic mites was demonstrated, being greater when used at concentrations of 1x107 and 1x108 conidia/ml in both species of Ornithonyssus, which were significantly higher than in the rest of the treatments. Given the results obtained under in vitro conditions, it is suggested to evaluate its control effect with direct applications on guinea pigs in order to assess its safety for the animal.