Lymphatic dwelling filarioid nematodes in reindeer Rangifer tarandus tarandus, (Cervidae) in Finland, identified as Rumenfilaria andersoni Lankester & Snider, 1982 (Nematoda: Onchocercidae: Splendidofilariinae)

Parasite

and O. Bain³  A. Oksanen¹  S. Nikander²  S. Saari²  S. Laaksonen¹ 

[1] Fish and Wildlife Health Research Unit, Finnish Food Safety Authority Evira (FINPAR), P.O. Box 517,FI-90101 Oulu,Finland;Department of Basic Veterinary Sciences, Faculty of Veterinary Medicine (FINPAR), P.O. Box 66,FI-00014 University of Helsinki,Finland;Departement Écologie et Gestion de la Biodiversité et UMR 7205 CNRS Origine, Structure et Évolution de la Biodiversité, Muséum National d’Histoire Naturelle, 61, rue Buffon,75231 Paris cedex 05,France

关键词: Alces alces;    Rangifer tarandus;    Rumenfilaria;    lymphatic filariosis;    filarioid;   

Others  :  808352
DOI  :  doi:10.1051/parasite/2010171023

 received in 2009-08-14, accepted in 2009-11-18,  发布年份 2010

【 摘 要 】

A filarioid nematode inhabiting the lymphatic vessels of the subserosal rumen and mesenteries associated with a high prevalence of its microfilariae in peripheral blood was observed in Finnish reindeer (Rangifer tarandus tarandus) in 2004 and 2006. Adult specimens were collected by dissecting lymphatic vessels from slaughtered animals, where some of the nematodes were seen through the wall of the dilated vessels as thin white winding threads obscuring the vessel. The morphology of adult worms and microfilaria is described based on light and scanning electron microscopy. These filariae belong to the subfamily Splendidofilariinae of the Onchocercidae and resemble Rumenfilaria andersoni, recovered from different host and localization, the ruminal veins of Alces alces in Canada. Comparison of paratypes of this species revealed only minor differences which were not sufficient to separate the filarioid parasitic in R. tarandus in Finland and we identify the nematode as R. andersoni. However, the findings suggest two different parasite populations. The finalizing of this taxonomic question in the future requires an integrated approach, in which the DNAbased and morphological identifications are consistent.

【 授权许可】

   
© PRINCEPS Editions, Paris, 2010