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Parasitol. latinoam ; 63(1/4): 51-57, Dec. 2008. mapas, graf, tab
Article in Spanish | LILACS | ID: lil-551392

ABSTRACT

Se estudió la comunidad de Monogenea de las branquias de juveniles de Pimelodus albicans Valenciennes 1840, en el río Salado del Norte, tributario del río Paraná Medio (Argentina). Se hallaron los siguientes taxa: Demidospermus armostus, Demidospermus bidiverticulatum, Demidospermus idolus, Demidospermus majusculus, Scleroductus yuncensi, Demidospermus sp y Ancyrocephalinae sp. Los resultados permiten concluir que no existe una especie dominante, aunque D. majusculus, D. armostus, D. idolus y Ancyrocephalinae sp se destacan por ser secundarias. La diversidad parasitaria local es moderada y no existe correlación entre la talla de los hospedadores y la intensidad de infestación de todos los taxa. En este artículo se analizan las infrapoblaciones e infracomunidades de Monogenea de P. albicans, y se presenta un nuevo registro de distribución geográfica de estos ictioparásitos neotropicales.


It was studied the monogenean communities on the gills of a Pimelodus albicans Valenciennes, 1840 juvenile, in the Northern Salado River, tributary of the Middle Paranß River (Argentina). Monogenea taxa were found: Demidospermus armostus, Demidospermus bidiverticulatum, Demidospermus idolus, Demidospermus majusculus, Scleroductus yuncensi, Demidospermus sp and Ancyrocephalinae sp. The results allow us to conclude that: D. majusculus, D. armostus, D. idolus and Ancyrocephalinae sp were secondary species and there is no a dominant one. The local diversity of parasites is moderate and there is no correlation between the size of the hosts and the intensity of parasitism. In this article, the infrapopulations and infracommunities of monogenean of P. albicans, were analyzed. These reports show a new geographical distribution register ofneotropical monogenean species.


Subject(s)
Animals , Gills/parasitology , Catfishes , Fish Diseases/parasitology , Trematode Infections/veterinary , Trematoda/growth & development , Argentina , Ecosystem , Trematode Infections/parasitology
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