CEPAVE   05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Host use and geographic distribution of two species of pinworms (Syphacia: Oxyuridae) in South America
Autor/es:
JIMENEZ RUIZ A.; ROBLES, M. R.
Lugar:
Anchorage
Reunión:
Encuentro; 86th Annual Meeting, American Society of Parasitologists; 2011
Institución organizadora:
American Society of Parasitologists
Resumen:
The cosmopolitan genus Syphacia includes monoxenous nematodes considered to be species specific to muroid rodents. In the New World they occur in arvicoline, neotomine and sigmodontine rodents. Twelve species are known to infect the latter group in South America; from these, Syphacia carlitosi and Syphacia alata have been recorded from sigmodontine rodents. Syphacia carlitosi is known from rodents of the genus Akodon in the Atlantic forest and Pampean region of Argentina. Syphacia alata is known from akodontine and oryzomine rodents from central Argentina to northern Colombia. We have found that haplotypes matching the morphotype of S. carlitosi appear to be restricted to mice of the genus Akodon (A. montensis, A. azarae, A. serrensis and A. phylipmayersi) in eastern Argentina. In contrast, morphotypes of S. alata appear to have a wide geographic distribution and be able to use different species of mice in a single locality. These mice may belong to the tribes Oryzomini and Akodontini. Genetic diversity for specimens collected from the same geographic area show less genetic diversity that across distantly geographic areas (Atlantic forest vs Andes).