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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 103, No. 2, 2008, pp. 207-210
Bioline Code: oc08035
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 103, No. 2, 2008, pp. 207-210

 en First record in South America of Didymosulcus palati check for this species in other resources and Didymosulcus philobranchiarca check for this species in other resources (Digenea, Didymozoidae) with new hosts records and pathological alterations
Justo, Márcia Cristina Nascimento; Tortelly, Rogério; Menezes, Rodrigo Caldas & Kohn, Anna

Abstract

Two species of Didymozoidae, Didymosulcus palati check for this species in other resources (Yamaguti 1970) and Didymosulcus philobranchiarca check for this species in other resources (Yamaguti 1970) were reported for the first time in South America, Atlantic Ocean, parasitizing three different tuna species from the coast of Rio de Janeiro, Brazil: Thunnus atlanticus check for this species in other resources (Lesson), Thunnus albacares check for this species in other resources (Bonnaterre) and Thunnus obesus check for this species in other resources (Lowe). Pairs of D. philobranchiarca were found on gill arches of T. albacares and T. obesus, in longitudinal rows of yellow cysts located inside grooves in the hard denticle palate (new site) of the three hosts species studied, and as disperse groups of cysts in the operculum (new site) and gill arches of T. atlanticus (new host record). D. palati occurred as disperse groups of encysted worm pairs in the gill arches of T. albacares and T. obesus and in gill arches and operculum of T. atlanticus (new host record). The pathological alterations induced by D. philobranchiarca in the palate of T. atlanticus are described for the first time. Original measurements and figures are presented.

Keywords
Didymosulcus palati- Didymosulcus philobranchiarca - Didymozoidae - Thunnus spp. - pathological alterations

 
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