Trachemys dorbigni, the Brazilian slider turtle, is native to Uruguay, Argentina and Brazil. In Brazil the species is abundant in the southern region. This research investigated the helminth fauna of this species. We examined sixty chelonians from aquatic environments of urban and rural areas in two municipalities in the State of Rio Grande do Sul, Brazil. During the research we found Telorchis achavali and Telorchis corti (Digenea). This is the first record of T. achavali in Brazil.

This study collected records of 135 taxa of parasitic helminths (Nematoda, Trematoda, Cestoda, Monogenoidea and Acanthocephala) and ectosimbionts (Temnocephalida) associated with continental Testudines from South America. Eighty-nine helminths were identified at the species level while others were identified up to genus or family levels. The greatest diversity of helminths associated with Testudines was reported in Brazil. Chelidae was the family with the largest number of helminth species. Regarding the conservation status, 17 Testudines species with helminth records are cited in the IUCN Red List of Threatened Species. Knowledge of helminth biodiversity and of relations between these organisms and Testudines can provide important data on host biology. Therefore, information generated by studies of helminths can contribute to research which aims at the conservation of organims and their...

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.

Oitenta maçariços da espécie Calidris fuscicollis foram coletados no Estado do Rio Grande do Sul, para análise de helmintos, no período de 2010-2012. Foram identificadas dois trematódeos (Selfcoelum brasilianum, Maritrema sp.), dois cestoides (Nadejdolepis smithi, Nadejdolepis sp.) e um acantocéfalo (Polymorphus cucullatus). Selfcoelum brasilianum, Maritrema sp., N. smithi, Nadejdolepis sp. e P. cucullatus são reportados, pela primeira vez, em C. fuscicollis.

During the period of 2009 and 2010, 30 specimens of Dasypus novemcinctus (Linnaeus, 1758) were collected from different regions of the state of Rio Grande do Sul, Brazil, with the objective of identifying the parasites that occurs in the Pampa Biome. Cestoda and Acanthocephala, were found in the intestine of six armadillos, which were identified as Mathevotaenia sp. (Cestoda: Anoplocephalidae) and Centrorhynchus sp. (Acanthocephala: Centrorhynchidae). Both parasites are recorded for the first time in nine banded armadillo in Brazil.

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...

Physaloptera liophis Vicente & Santos, 1974 was described as parasite of snake in southeastern Brazil; however, some morphological aspects need updating. In the study of helminths associated with Rhinella dorbignyi (Duméril & Bibron, 1841) (Anura: Bufonidae) in the south of the country, specimens of P. liophis were found and used for the redescription presented by this paper. Thirteen out of 100 anurans under analysis were parasitized by P. liophis. Redescription provides new information on the number of papillae of males and on morphological characteristics of the reproductive system of females.

Dioctophyme renale (Goeze, 1782) se ha reportado en varias especies de carnívoros silvestres y en perros domésticos. Los oligoquetos acuáticos son hospedadores intermedios, ranas y los peces actúan como hospedadores paraténicos. Contracaecum spp. es parásito de aves y mamíferos que alimentan de peces, invertebrados actúan como hospedadores intermedios, y los peces actúan como hospedadores intermediarios y paraténicos. Este trabajo tiene como objetivo registrar larvas de D. renale y Contracaecum sp. en tortugas de agua dulce. Se examinaron nueve Phrynops hilarii (Duméril & Bibron, 1835) y 21 Acanthochelys spixii (Duméril & Bibron, 1835), colectados in Rio Grande do Sul, Brasil. Cuatro ejemplares de P. hilarii estuvieron infectados por larvas de tercer estadio de D. renale y una A. spixii estuvo infectada por larvas de tercer estadio de Contracaecum sp. Este es el primer regist...

Se examinaron 44 ejemplares pertenecientes a las nueve especies de Ardeidae del extremo sur del estado de Rio Grande do Sul. El objetivo del estudio fue relatar la ocurrencia de las especies de helmintos para las aves, cuantificar las infecciones por especie hospedadora, además de presentar una revisión de helmintos de Ardeidae de Brasil. Las aves acuáticas fueron positivas para 18 tasas, cinco Nematoda, nueve Trematoda y cuatro Acanthocephala. Los nuevos registros de helmintos para Ardeidae en Brasil fueron reportados. Ardea cocoi y Ardea alba se destacaron por el número de especies asociadas.

Chrysomus ruficapillus (Vieillot, 1819) es una ave abundante en Bioma Pampa frecuentemente asociada a arrozales. Se examinaron 122 especímenes recolectados en campos de arroz del extremo sur de Brasil para investigar la presencia de helmintos. Ciento y catorce C. ruficapillus fueron positivos para por lo menos uma espécie parásita (P% = 93.4) y fueron identificados 15 taxa: ocho pertenecientes a Trematoda (P% = 75.4), dos a Cestoda (P% = 20.5), cuatro a Nematoda (P% = 57,4) y uno a Acanthocephala (P% = 2.4). Los resultados y índices parasitológicos son inéditos para C. ruficapillus contribuyendo al conocimiento parasitológico de la espécie y para la helmintología de Icteridae en América del Sur.

O objetivo do estudo foi identificar os helmintos de Tadarida brasiliensis no sul do Brasil. O trabalho foi realizado no Estado do Rio Grande do Sul, Brasil, entre os anos de 2010 e 2011. Foram capturados 160 T. brasiliensis de uma colônia na zona rural do município do Capão do Leão e 20 de uma colônia na zona urbana do munícipio de Pelotas para análise de helmintos. Os hospedeiros da área rural estavam parasitados por Ochoterenatrema labda (Trematoda) (71,8%), Limatulum oklahomense (Trematoda) (22,5%), Urotrema scabridum (Trematoda) (11,25%), Vampirolepis decipiens (Cestoda) (40,6%) e Molinostrongylus delicatus (Nematoda) (59,37%). Os hospedeiros da área urbana estavam parasitados por O. labda (55%), L. oklahomense (35%), V. decipiens (60%) e M. delicatus (15%). Este é o primeiro relato de ocorrência desses helmintos parasitando T. brasiliensis no Brasil e o primeiro registro...

Rattus rattus has synanthropic habits which make it an important rodent for the dissemination of zoonotic parasites. Thirty individuals were captured and necropsied with the aim of knowing theie helminth fauna. Three species of parasites were found, two nematodes (Aspiculuris tetraptera and Syphacia obvelata) and one cestode (Hymenolepis diminuta). The rural area showed most diversity of helminthes.

The objective of the study was to record the occurrence of Dioctophyma renale (Goeze, 1782) Collet- Meygret, 1802 in Galictis cuja Molina, 1782 in southern Brazil. Three specimens of G. cuja were found dead by running over on highways in the city of Pelotas, Rio Grande do Sul, Brazil and sent to the Laboratory of Parasitology of Wild Animals of the Federal University of Pelotas. Helminths were collected from the kidneys and the abdominal cavity with a mean intensity of infection of 4.66 helminths / host. In Brazil, D. renale had been reported parasitizing G. cuja only in the state of Paraná. Dioctophyma renale is reported for the first time in G. cuja in the state of Rio Grande do Sul, Brazil.

Dioctophyme renale (Goeze, 1782) is a parasitic nematode that infects the kidneys of wild and domestic carnivores, including humans. The parasite is highly prevalent in southern Brazil, affecting a wide range of wild and domestic animals. While the high rates of parasitosis in stray and semi-domesticated dogs in the region are well documented, the dynamics of the parasite's life cycle and the intermediate (freshwater invertebrates) and definitive hosts are not completely known. This study aimed to report two new wild hosts for D. renale third-stage larvae in southern Brazil. The study was conducted in Capão do Leão, Rio Grande do Sul, Brazil. Three road-killed mammals, including one Procyon cancrivorus (G. Cuvier, 1798) and two Didelphis albiventris Lund, 1840, were collected and sent to the Federal University of Pelotas for parasitological analysis. The parasites were removed, cleaned...