Abstract
First stage larvae of an unknown lungworm (Protostrongylidae) were isolated in the feces of a wild reindeer (Rangifer tarandus) from Taimyr, Russia. Larvae were 365-366 μm long and had a tail spike lacking a dorsal spine. DNA analyses using BLAST showed that nuclear sequences obtained (LSU rDNA, 825 bp and ITS2 rDNA, 395 bp) were highly similar (99.50% and 98.88% identity, respectively) to an isolate of Orthostrongylus macrotis (GenBank: EU595592.1) from North America. It cannot be confirmed whether these larvae represent an uncharacterized species of Orthostrongylus or can be referred to O. macrotis, a species that has historically only been reported from the Nearctic. This is the first report of lungworms attributable to Protostrongylinae in R. tarandus across its vast geographic in the Holarctic.
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