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Tissue-dwelling philometrid nematodes of the fish Arapaima gigas in Brazil

Published online by Cambridge University Press:  01 September 2009

C. Portes Santos  and
F. Moravec
C. Portes Santos*
Affiliation:
Laboratório de Avaliação e Promoção da Saúde Ambiental, Instituto Oswaldo Cruz – FIOCRUZ, Av. Brasil 4365, 21045-900Rio de Janeiro, RJ, Brazil
F. Moravec
Affiliation:
Institute of Parasitology, Biology Centre of the Academy of Sciences of the Czech Republic, Branišovská 31, 37005České Budějovice, Czech Republic
*
*Fax: +55-21-25606474 ext. 3 E-mail: [email protected]
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Abstract

The nematode Rumai rumai Travassos, 1960 (Philometridae) is redescribed from the tissues of the mouth, tongue, operculum and head of the arapaima, Arapaima gigas (Schinz) (Osteichthyes), from Mexiana Island, Amazon River Delta, Brazil. Additional data on the related Nilonema senticosum (Baylis, 1922) from the same host and locality are also presented. Rumai rumai is characterized by the presence of a sclerotized formation on the female cephalic end, dorsal and ventral cephalic projections, the shape and structure of the oesophagus and a conical caudal extremity. Males of both R. rumai and N. senticosum, specific parasites of the ancient arapaima fish in the Neotropics, remain unknown. The relationship between these tissue-dwelling nematodes and the aquaculture system of Mexiana Island is commented upon.

Type
Research Papers
Information
Journal of Helminthology , Volume 83 , Issue 3 , September 2009 , pp. 295 - 301
Copyright
Copyright © Cambridge University Press 2009

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