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- Ticks on dogs and its role as vectors: intermediate hosts in the Center-West of PortugalPublication . Rosa, Fernanda; Crespo, Maria Virgínia; Ferreirinha, Dario; Morgado, Marina; Madeira, Marta; Santos-Silva, M.; Sousa, R.Dogs are one of the most important hosts in the maintenance of tick population. In order to identify the species and their role on the transmission of hemoparasites and rickettsiae, ticks were collected on 466 dogs of Center- West region of Portugal. Taxonomical studies were done and appositional hemolymph smears were also performed in order to search for rickettsia infections. Some ticks were processed for DNA extraction and screened by PCR for detection of rickettsiae DNA. Specimens of Rhipicephalus sanguineus, R. pusillus, Ixodes spp. and Hyalomma marginatum were identified. Only the first two species were found infected with a rickettsial strain Bar29 and with R. massiliae. These results reinforce the important role of dogs and its ticks on epidemiology of tick-borne rickettsiae agents in Portugal.
- Intestinal parasites in dogs from the Center-west of PortugalPublication . Crespo, Maria Virgínia; Rosa, Fernanda; Morgado, Marina; Ferreirinha, Dario; Cerejo, A.; Madeira, MartaEnvironmental contamination by dog faeces in public areas is considered a risk factor to Public Health. Therefore, during a period of five years (2000-2005) a parasitological study on dog faeces was performed in Center-West region of Portugal. Coprological exams were performed. Out of 2806 samples analysed, 792 (28,23%) showed eggs/oocysts of intestinal parasites, with higher prevalences in rural areas (53,35%). Specimen eggs belonging to the families Taeniidae, Dipylidiidae, Ancylostomatidae, Ascarididae, Trichuridae and Spirocercidae and oocysts from Eimeriidae and Sarcocystidae, were identified. The results obtained pointed out to the continuity of prophylactic measures which has already been implemented in the studies areas.