6533b825fe1ef96bd1281eb4

RESEARCH PRODUCT

Uncinaria hamiltoni (Nematoda: Ancylostomatidae) in South American Sea Lions, Otaria flavescens, From Northern Patagonia, Argentina

Enrique Alberto CrespoJ. A. RagaSusana N. PedrazaBárbara Berón-vera

subject

AncylostomatoideaMaleOtras Ciencias BiológicaseducationArgentinaZoology:CIENCIAS DE LA VIDA [UNESCO]Ciencias BiológicasHookworm Infectionsparasitic diseasesPrevalenceUNESCO::CIENCIAS DE LA VIDAAnimalsParasite hostingSex DistributionSea lionEcology Evolution Behavior and SystematicsRookeryUncinaria hamiltoniUncinaria hamiltonibiologyAncylostomatidaeEcology:CIENCIAS DE LA VIDA::Biología animal (Zoología) ::Parasitología animal [UNESCO]Otaria flavescensbiology.organism_classificationSea LionsUNESCO::CIENCIAS DE LA VIDA::Biología animal (Zoología) ::Parasitología animalHookworm InfectionsSouth americanUncinaria hamiltoni ; Ancylostomatidae ; Sea Lions ; Northern Patagonia argentinaFemaleParasitologyAncylostomatidaeCIENCIAS NATURALES Y EXACTASNorthern Patagonia argentina

description

Thirty-one South American sea lion pups (Otaria flavescens) found dead in Punta León, Argentina, during the summer of 2002, were examined for hookworms (Uncinaria hamiltoni). Parasite parameters were analyzed in 2 locations of the rookery, i.e., a traditional, well-structured breeding area and an expanding area with juveniles and a lax social structure. Prevalence of hookworms was 50% in both localities, and no difference was observed in prevalence between pup sexes (P > 0.05). Hookworms were concentrated in the small intestine. Transmammary transmission is assumed because only adult hookworms were found in the pups. The mean intensity of hookworms per pup was 135; the mean intensity in females (92.78) was significantly different (P 0.05) in intensity was found between the 2 breeding areas, although prevalence was higher in the traditional breeding area than in the other area. Location was the only factor affecting hookworm prevalence (P log-linear model: 0.9552; χ2: 1.5629). No apparent trend between body condition and intensity of hookworms was observed. Fil: Beron Vera, Barbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; Argentina Fil: Crespo, Enrique Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; Argentina Fil: Raga, J. A.. Universidad de Valencia; España Fil: Pedraza, Susana Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico; Argentina. Universidad Nacional de la Patagonia; Argentina

yearjournalcountryeditionlanguage
2004-08-01
10.1645/ge-182rhttp://hdl.handle.net/10550/16772