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

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 lympha...

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Main Authors: Laaksonen S., Saari S., Nikander S., Oksanen A., Bain O.
Format: Article
Language:English
Published: EDP Sciences 2010-03-01
Series:Parasite
Subjects:
Online Access:http://dx.doi.org/10.1051/parasite/2010171023
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author Laaksonen S.
Saari S.
Nikander S.
Oksanen A.
Bain O.
author_facet Laaksonen S.
Saari S.
Nikander S.
Oksanen A.
Bain O.
author_sort Laaksonen S.
collection DOAJ
description 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.
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spelling doaj.art-181d0827379c4319a20d11e67ea6f9c42023-11-02T10:19:32ZengEDP SciencesParasite1252-607X1776-10422010-03-01171233110.1051/parasite/2010171023parasite2010171p23Lymphatic dwelling filarioid nematodes in reindeer Rangifer tarandus tarandus, (Cervidae) in Finland, identified as Rumenfilaria andersoni Lankester & Snider, 1982 (Nematoda: Onchocercidae: Splendidofilariinae)Laaksonen S.Saari S.Nikander S.Oksanen A.Bain O.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.http://dx.doi.org/10.1051/parasite/2010171023filarioidlymphatic filariosisRumenfilariaRangifer tarandusAlces alces
spellingShingle Laaksonen S.
Saari S.
Nikander S.
Oksanen A.
Bain O.
Lymphatic dwelling filarioid nematodes in reindeer Rangifer tarandus tarandus, (Cervidae) in Finland, identified as Rumenfilaria andersoni Lankester & Snider, 1982 (Nematoda: Onchocercidae: Splendidofilariinae)
Parasite
filarioid
lymphatic filariosis
Rumenfilaria
Rangifer tarandus
Alces alces
title Lymphatic dwelling filarioid nematodes in reindeer Rangifer tarandus tarandus, (Cervidae) in Finland, identified as Rumenfilaria andersoni Lankester & Snider, 1982 (Nematoda: Onchocercidae: Splendidofilariinae)
title_full Lymphatic dwelling filarioid nematodes in reindeer Rangifer tarandus tarandus, (Cervidae) in Finland, identified as Rumenfilaria andersoni Lankester & Snider, 1982 (Nematoda: Onchocercidae: Splendidofilariinae)
title_fullStr Lymphatic dwelling filarioid nematodes in reindeer Rangifer tarandus tarandus, (Cervidae) in Finland, identified as Rumenfilaria andersoni Lankester & Snider, 1982 (Nematoda: Onchocercidae: Splendidofilariinae)
title_full_unstemmed Lymphatic dwelling filarioid nematodes in reindeer Rangifer tarandus tarandus, (Cervidae) in Finland, identified as Rumenfilaria andersoni Lankester & Snider, 1982 (Nematoda: Onchocercidae: Splendidofilariinae)
title_short Lymphatic dwelling filarioid nematodes in reindeer Rangifer tarandus tarandus, (Cervidae) in Finland, identified as Rumenfilaria andersoni Lankester & Snider, 1982 (Nematoda: Onchocercidae: Splendidofilariinae)
title_sort lymphatic dwelling filarioid nematodes in reindeer rangifer tarandus tarandus cervidae in finland identified as rumenfilaria andersoni lankester snider 1982 nematoda onchocercidae splendidofilariinae
topic filarioid
lymphatic filariosis
Rumenfilaria
Rangifer tarandus
Alces alces
url http://dx.doi.org/10.1051/parasite/2010171023
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