Browsing by Subject "Parasite"

Now showing 1 - 4 of 4
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    Empleo de ivermectina como parasiticida en ovino: posibles efectos tóxicos y repercusiones ambientales
    (Murcia: Servicio de Publicaciones de la Universidad de Murcia, 2011) García Salazar, B.; Hernández Moreno, D.; Soler Rodríguez, F.; Pérez López, M.
    El profesional veterinario debe conocer no sólo los efectos terapéuticos derivados del empleo de ciertos agentes farmacológicos, sino también los posibles riesgos medioambientales que su actividad puede ocasionar. A través del presente trabajo se repasan las enormes posibilidades terapéuticas de la ivermectina como antiparasitario en el ganado ovino, pero también se hace hincapié en sus efectos ambientales, intentando concienciar al veterinario acerca de su importante papel como profesional implicado en la protección del medio ambiente.
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    Epidemiological factors of Eucoleus aerophilus infection in red foxes (Vulpes vulpes) from semi-arid Mediterranean environments
    (Elsevier, 2026-01-13) Martínez-Carrasco Pleite, Carlos; Ruiz de Ybáñez Carnero, María del Rocío; Catala-Barrasetas, Mireia; Pérez Cutillas, Pedro; Arcenillas Hernández, Irene; Sanidad Animal; Facultades de la UMU::Facultad de Veterinaria
    Eucoleus aerophilus is a ubiquitous zoonotic nematode found in the tracheobronchial mucosa of the definitive hosts, described in wild and domestic canids, including the red fox (Vulpes vulpes). To assess E. aerophilus occurrence and intensity in red foxes, the respiratory system of 126 foxes from Region of Murcia (SE, Spain) were examined. Statistical analyses were performed to investigate the influence of biotic and abiotic factors on the parasite´s occurrence. The occurrence of E. aerophilus was 28.6% (95% CI: 20.6-36.4), with a mean intensity of 3.1 nematodes per parasitised fox. The infection rate and parasite intensity were higher in forested areas, suggesting that earthworm abundance and a longer survival of infective E. aerophilus eggs increase the risk of transmission and maintenance in the environment. Moreover, an inverse relationship between E. aerophilus occurrence and temperature (p<0.05) was observed. Results demonstrated that foxes participate in maintaining the cycle of E. aerophilus in semi-arid Mediterranean environments. This should be taken into account at the wild-domestic-human interface. The development of a predictive model of E. aerophilus infection risk in red foxes will allow the design of future strategies for the prevention of capillariosis, especially in areas where contact between foxes, domestic carnivores, and humans exists.
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    In vitro treatments for the theront stage of the ciliate protozoan Cryptocaryon irritans
    (Inter-Research Science Publisher, 2011-04-06) Picón-Camacho, S.M.; Ruiz de Ybáñez, M.R.; Holzer, A.S.; Arizcun Arizcun, M.; Muñoz, P.; Sanidad Animal
    The ciliate protozoan Cryptocaryon irritans Brown, 1951, the ‘marine white spot’, causes one of the most important parasitic fish diseases, with extensive losses every year in mariculture and in the ornamental fish industry. In the present study, we explore the in vitro use of 8 different com- pounds against the theront (infective) stage of C. irritans ; these compounds include extracts of natural products (epigallocatechin gallate (EGCG), L-DOPA, papain), peracetic acid-based compounds (Proxitane® 5:23 and 15% peracetic acid, PAA), quinine-based compounds (quinacrine hydrochloride and chloroquine diphosphate) and hydrogen peroxide. All of these compounds had an effect on theront survival; however, only EGCG caused significant theront mortality when applied in doses≥50 mg l–1 and over a period of 3 h; papain caused a maximum theront mortality of < 50%. We discuss the type of application and potential utility of the compounds tested as part of a management control strategy for C. irritans infections in marine aquaculture and the ornamental fish industry.
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    Plastinated macroparasites, an alternative resource for use in practical lessons
    (2019-12) Ruiz de Ybáñez Carnero, María del Rocío; Ortiz Sánchez, Juana; Latorre Reviriego, Rafael Manuel; López Albors, Octavio Miguel; Gonzálvez Juan, Moisés; Sanidad Animal
    The plastination technique is a recently developed option to preserve biological tissues widely used in human and veterinary anatomy. This process allows one to obtain real, safe, clean, dry, resistant and permanently stable material without any additional treatment or maintenance. All these advantages are associated with the rapid expansion of plastination during recent decades in a high number of educational institutions. However, the studies of parasite conservation through plastination are scarce, although the material obtained has a high quality, as prior references have shown. In this study, 141 students of veterinary medicine and pharmacy university degrees used, in a blind study, plastinated specimens (experimental group) or wet specimens (control group) during three consecutive practical sessions. Afterwards all the students completed anonymous questionnaires on both knowledge and satisfaction. The results demonstrated that plastinated parasites are a valid and satisfactory alternative to be used as a teaching/learning tool during practical lessons. Moreover, with regard to the knowledge of morphological structures, the results from the questionnaire of assimilated knowledge showed no differences between the use of plastinated and formaldehyde-preserved parasites