Se estudió la asociación entre los helmintos epibiontes de Temnocephalidae y la tortuga de agua dulce Trachemys dorbigni (Duméril & Bibron, 1835), comparando los ambientes urbano y rural, y el género sexual de las tortugas. Sesenta especímenes de T. dorbigni fueron recolectadas en canales urbanos y lagos de la zona rural de dos localidades de Rio Grande do Sul, extremo sur de Brasil. Los epibiontes, Temnocephala pereirai Volonterio, 2010 y Temnocephala sp. (Temnocephalidae), fueron encontrados solamente en las tortugas de la zona rural. Se observó una relación positiva entre helmintos epibiontes y los machos de T. dorbigni, sugiriendo que la dinámica poblacional de los helmintos esté relacionada con el comportamiento y la condición reproductiva de T. dorbigni.

The life cycle of species belonging to Strigea remains complex and poorly understood, especially in the Neotropical region, where information about their intermediate hosts is scarce. Rallidae birds are known for their adaptability to aquatic and semi-aquatic environments since they exhibit ability to disperse and adjust to a wide range of ecological conditions. In this study, we examined seventeen specimens of Pardirallus maculatus  (Boddaert, 1783) and one of Pardirallus sanguinolentus (Swainson, 1838) collected in southern Brazil in search for Strigea sp. metacercariae. Metacercariae occurred in 11.1% (2/18) of birds with infection intensity of 12 (Strigea sp. 2) and 28 (Strigea sp. 1) helminths found in P. sanguinolentus and P. maculatus, respectively. Metacercariae were found exclusively in the pectoralis muscle region, beneath subcutaneous tissue. These findings suggest the po...