Ciencias Agropecuarias

URI permanente para esta comunidadhttp://repositorio.uta.edu.ec/handle/123456789/870

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2024 - 20264

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Tema: search.filters.subject.ECTOPARÁSITOS

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Mostrando 1 - 4 de 4
  • Miniatura
    Item type:Ítem,
    Evaluación del efecto de isoxazolina (fluralaner) sobre el control de ectoparásitos y la salud dermatológica en coaties cautiverio.
    (2026-01)
    Carvajal Villacres, Luana Eleonora
    ;
    Villavicencio Villavicencio, Blanca Jeaneth
    This study aimed to determine the use of Fluralaner Bravecto® in controlling ectoparasites in captive coatis (Nasua nasua) of the Procyonidae family. Ten individuals were studied from two rescue centers: "El Arca" (Archidona) and "Yanacocha" (Puyo). After the animals were captured, initial dermatological and blood chemistry tests were performed. Seventy percent of the animals presented clinical changes, while 100% showed hematological changes consistent with parasitosis. Fluralaner was subsequently administered, followed by three follow-up tests at 15-, 45-, and 75-days post-treatment. From the first follow-up, a reduction in ectoparasites was evident, while the second showed a decrease in bacterial and fungal skin infections, as well as a progressive improvement in the coat. During the final follow-up, the coaties presented shiny, dense, and healthy coats, with complete recovery of both the skin and the coat. Furthermore, weight gain was recorded in the treated individuals, attributable to a lower parasite load and the resulting utilization of nutrients provided in the diet. Thus, the application of fluralaner Bravecto® proved to be an effective, safe, and long-lasting alternative for the health management of coaties in captivity, contributing to conservation, rehabilitation, welfare, and captive management programs
  • Miniatura
    Item type:Ítem,
    Identificación de ectoparásitos en la tilapia roja (Oreochromis mossambicus) y negra (Oreochromis niloticus) en piscifactorías del Cantón Carlos Julio Arosemena Tola
    (2025-02)
    Herrera Zapata Damary Abigail
    ;
    Guerrero López Jorge Ricardo
    The present study aimed to investigate the identification of ectoparasites in red tilapia (Oreochromis mossambicus) and black tilapia (Oreochromis niloticus) populations in the canton of Carlos Julio Arosemena Tola in Ecuador. For this purpose, an exhaustive investigation was carried out in 31 fish farms, focusing on 11 farms that reported having health problems. A total of 55 specimens were selected (37 O. niloticus and 18. mossambicus). To carry out the parasitological analysis, microscopic techniques of skin, fins, gills, nares and eyeballs were used in the field study to identify ectoparasites. In addition, factors influencing parasite prevalence were assessed, including fish stocking density and geographical distribution within the canton. Microscopic analysis revealed the presence of Cichlidogyrus sclerosus, a monogenic ectoparasite and mainly located in the first two gill arches in both O. mossambicus and O. niloticus populations. The prevalence of this parasite was higher in O. niloticus (48.64%) compared to O. mossambicus (27.77%). Similarly for the intensity variable, O. niloticus reflected a slightly higher intensity (8.5) than O. mossambicus (7.0). Finally, management strategies for sustainable tilapia farming practices are proposed to mitigate the impact of ectoparasites on fish health and productivity.
  • Miniatura
    Item type:Ítem,
    Identificación y prevalencia de artrópodos ectoparásitos asociados en caprinos de raza criolla en la provincia de Santa Elena
    (2024-08)
    Chico Mayorga, María Fernanda
    ;
    Almeida Secaira, Roberto Ismael
    Goat breeding has been gaining strength in recent years in the country. In order to be successful in animal production, many factors must be taken into account. For example, one of them is ectoparasites. This problem can cause diseases and complications in animals and therefore ends in economic losses. Therefore, the research was carried out with the objective of identifying the prevalence of ectoparasites in Creole goats in Río Verde, province of Santa Elena. Ectoparasites were collected from 52 female goats, and then the samples were placed in jars with 70% alcohol to be transported to the laboratory where the identification analysis was carried out using a stereoscope. The result was the presence of the genus Rhipicephalus linnaei, a type of tick not previously described in Ecuador and known to attack the canine species. In addition, in terms of prevalence, it was determined that there is a 15% infestation of ectoparasites in 8 of 52 goats. In conclusion, it is inferred that the genus Rhipicephalus linnaei has evolved looking for larger hosts such as goats and has spread to reach Ecuador.
  • Miniatura
    Item type:Ítem,
    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.