Travassiella avitellina check for this species in other resources - cestode - Pimelodidae - Argentina - Paraguay - Brazil"/>
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Memórias do Instituto Oswaldo Cruz
Fundação Oswaldo Cruz, Fiocruz
ISSN: 1678-8060
EISSN: 1678-8060
Vol. 97, No. 5, 2002, pp. 657-661
Bioline Code: oc02127
Full paper language: English
Document type: Research Article
Document available free of charge

Memórias do Instituto Oswaldo Cruz, Vol. 97, No. 5, 2002, pp. 657-661

 en Redescription of Travassiella avitellina check for this species in other resources Rego & Pavanelli, 1987 (Proteocephalidea: Monticelliidae, Zygobothriinae), a Parasite of Paulicea luetkeni check for this species in other resources (Siluriformes) from South America
Alain de Chambrier & Alicia Alida Gil de Pertierra

Abstract

The genus Travassiella check for this species in other resources Rego & Pavanelli, 1987 comprises only one species, T. avitellina check for this species in other resources Rego & Pavanelli, 1987; characterized by these authors on the basis of absence of vitelline follicles. In this study, the presence of cortical vitelline follicles in this species is confirmed after de Chambrier and Vaucher (1999); the redescription was performed for the first time based on type and new material collected from Argentina, Brazil and Paraguay. Travassiella is confirmed as a valid genus, and compared to other genera of the subfamily Zygobothriinae. T. avitellina is characterized by: (1) the presence of gland cells posteromedially to suckers; (2) the particular distribution of vitelline follicles, forming lateral arches; (3) uterine primordium cortical, growing into medulla and forming a sac-like uterus; (4) eggs, irregularly oval, outer envelop with excrescences and two digitate lappets in one of the poles.

Keywords
Travassiella avitellina check for this species in other resources - cestode - Pimelodidae - Argentina - Paraguay - Brazil

 
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