Descripción de la morfología externa de duboisiella proloba trematoda strigeida de didelphis albiventris en Argentina por microscopía electrónica de barrido / Description of the external morphology of duboisiella proloba trematoda strigeida from didephis albiventris in Argentina by scanning electronic microscope

The aim of this study was to report some external morphological features of duboisiella proloba Baer, 1938. The parasites were collected during necropsy from the small intestine of didelphis albiventri hunted in its native environment near Corrientes city, Argentina. Collected specimens of duboisiella proloba were observed by light microscopy in order to be classified. Later the parasites were put into a 3 percent glutaraldehyde solution, dehydrated, dried by critical point, assembled, metalized, observed and photographed with a SEM

Heterakiosis en numida meleagris: aves: numididae / Heterakiosis in numida meleagris: aves: numididae

A case of caecum nematodiasis is described in a guinea fowl (Numida melagris) from the Municipal Zoo, Presidencia Roque Saenz Peña (Chaco) Argentina. Nematodes obtained from the caecum were observed in optic microscopy. According to their morphometric characteristics and location in the definitive host, were identified as belonging to the family heterakidae, species Heterakis gallinarum, (Schrank, 1788) Maden, 1949