Some digenea parasites of tunny from the coast of Rio de Janeiro State, Brazil

Rhipidocotyle pentagonum (Ozaki, 1924) is reported for the first time in South America parasitizing Auxis thazard and in a new host Katsuwonus pelamis. Tergestia laticollis (Rudolphi, 1819) is reported for the first time in South America and in Thunnus albacares, representing a new host record. Copiatestes filiferus (Leuckart, in Sars, 1885) is recorded for the first time in Brazil and in Thunnus albacares, another new host record. Tetrochetus coryphaenae (Yamaguti, 1934) is presented for the first time in Brazil parasitizing Thunnus albacares

Report on two species of Digenea from marine fishes in Brazil

Two species of Digenea were recorded for the first time in South America and in new hosts: Acanthostomum spiniceps (Looss, 1896) (Cryptogonimidae) was reported from Astroscopus sexspinosus (Steindachner, 1877) (Uranoscopidae) and Diplomonorchis sphaerovarium Nahhas & Cable, 1964 (Monorchiidae) from Ophichthus gomesi (Castelnau, 1855) (Ophichthidae). From the latter, Heliconema heliconema Travassos, 1919 (Nematoda, Physalopteridae), was also recovered representing also a new host for this nematode species

On some trematodes parasites of fishes from Paraná River

Crassicutis cichlasomae Manter, 1936 is redescribed for the first time in South America and from a new host: Geophagus brasiliensis (Cichlidae). Iheringtrema iheringi Travassos, 1948 is redescribed for the first time since its original description from Pseudopimelodus zungaro (Pimelodidae); and new host records are referred to Genarchella genarchella Travassos et al., 1928, and to Parspina argentinensis (Szidat, 1954). Other reported species are: Microrchis oligovitellum Lunaschi, 1987, Neocladocystis intestinalis (Vaz, 1932), Pseudosellacotyla lutzi (Freitas, 1941), Thometrema overstreeti (Brooks et al., 1979) and Zonocotyle bicaecata Travassos, 1948. Original figures and measurements are presented

Neoparaseuratum travasssosi, n. g., n. sp. (Nematoda: Quimperiidae), a new parasite from thorny catfish Pterododas granulosus in Brazil

A new nematode genus and species. Neoparaseuratum travassosi n. g., n. sp., is described from the intestine of the freshwater thorny catfish, Pterodoras granulosus (Valenciennes), from the Paraná River, Brazil. This seuratoid nematode species represents a new genus of the family Quimperiidae, being characterized mainly by the presence of numerous narrow longitudinal bands of inflated cuticle extending along the cephalic region of the body, small deirids, postoesophageal position of the excretory pore, relatively short (0.159-0.303 mm), equal spicules and a gubernaculum, the absence of caudal alae and preanal sucker in the male, and by some other features

Aspidogastrid and digenetic Trematodes parasites of marine fishes of the coast of Rio de Janeiro State, Brazil

De Julho de 1981 a Março de 1983, vinte e oito espécies de peixes marinhos foram examinados para coleta de helmintos, e no presente trabalho säo apresentados os resultados relativos aos trematódos aspidogastrídeos e digenéticos, representados por 17 espécies. Quatro espécies säo referidas pela primeira vez na América do Sul, uma no Brasil e seis em novos hospedeiros: Ectenurus yamagutti (primeiro registro na América do Sul e em quatro novos hospedeiros); Lecithochirium monticellii (primeiro registro no Brasil e em um novo hospedeiro); Aponurus lagunculka (primeiro registro na América do Sul e em três novos hospedeiros); A.pyriformis (em um novo hospedeiro); Lepocreadium scombri (primeiro registro na América do Sul); Opechona chloroscombri (primeiro registro na América do Sul); Multitestis (Multitestis) rotundus; Pseudopecoelus elongatus (em um novo hospedeiro); Diplomonorchis leiostomi (em um novo hospedeiro); Genolopa ampulacea; Megasolena hystetospina; Bucephalus varicus; B. solitarius; Lobatostoma kemostoma; Genolopa sp.; Lecithocladium sp. e Tergestia sp. Säo apresentados comentários e medidas. Os desenhos estäo restritos às espécies referidas pela primeira vez no Brasil