Oswaldofilaria chabaudi n. sp. (Nematoda: Onchocercidae) from a South American tropidurid lizard (Squamata: Iguania) with an update on Oswaldofilariinae

Parasite

and O. Bain³  S. Souza Lima²  F.B. Pereira¹ 

[1] Universidade Federal de Juiz de Fora, Departamento de Zoologia Laboratório de Instituto de Ciências Biológicas, Laboratório de Taxonomia e Ecologia de Helmintos, Campus Universitário, Martelos,CEP 36036-900,Juiz de Fora,Minas Gerais,Brazil;Universidade Federal do Rio de Janeiro, Instituto de Biofísica Carlos Chagas Filho, Laboratório de Biologia de Helmintos Otto Wuckerer, Cidade Universitária,CEP 21941-901,Rio de Janeiro,Brazil;Muséum National d’Histoire Naturelle, UMR 7205 CNRS, Parasitologie Comparée, 61, rue Buffon,CP 52,75231 Paris Cedex 05,France

关键词: Brazil;    Minas Gerais;    Tropiduridae;    Squamata;    Tropidurus torquatus;    Oswaldofilariinae;    Onchocercidae;    Filarioidea;    Oswaldofilaria chabaudi n. sp.;   

Others  :  808299
DOI  :  doi:10.1051/parasite/2010174307

 received in 2010-04-12, accepted in 2010-06-18,  发布年份 2010

【 摘 要 】

A new species of Oswaldofilaria is described from Tropidurus torquatus (Tropiduridae: Iguania); its prevalence at the rocky study area at Juiz de Fora, Minas Gerais, Brazil, was approximately 30% and its mean intensity 3.13 ± 2.51. Oswaldofilaria chabaudi n. sp. is distinct from the thirteen Oswaldofilaria species known in Australia, Africa and South-America in having the following characteristics: oesophagus medium-sized, left spicule 1 mm long and high spicular ratio (about 5), tail extremity ornated in both sexes with a bifurcated projection, and tooth-like structures near phasmids in the female. A long left spicule and high spicular ratio are convergent derived characters also found in a parasite of Australian crocodilians, O. kanbaya, and in several species of the closely related genus Befilaria, such as the Central American B. puertoricensis from polychrotids. Oswaldofilaria in South America is represented by eight species. Within these, a primitive group that is parasitic in Iguanidae, Polychrotidae (Iguania) and Crocodylidae and that possesses a long oesophagus is recognised, together with two distinct derived lines: three species with numerous, aligned precloacal papillae, parasitic in Teiidae (Laterata) and Scincidae (Scincomorpha), and O. chabaudi n. sp., in which this character is absent. Tropidurids (Tropiduris and Plica) had previously been reported in the host range of two oswaldofilarine genera, Oswaldofilaria and Piratuba, and their parasites assigned to known species described from other groups of lizards.

【 授权许可】

   
© PRINCEPS Editions, Paris, 2010