The species composition of gastrointestinal nematodes in black-tailed deer odocoileus hemionus from Moscow region.

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Russian Journal of Parasitology, 2017, V.40, Iss.2
Received: 21.09.2016
Accepted: 10.03.2017



Aksyonov A. P.1, Kuznetsov D. N.1,2, Khrustalev A. V.2, Khutoryanskyi A. A.3
1 The Center for Parasitology at the A.N. Severtsov Institute of Ecology and Evolution of the RAS, 119049, Moscow, 28 Mytnaya St., build. 1,

2 The All-Russian Scientific Research Institute of Fundamental and Applied Parasitology of Animals and Plants named after K.I. Skryabin, 117218, Moscow, 28 Bolshaya Cheremushkinskaya St.,,

Independent Veterinary Laboratory “Chance Bio”, 115230, Moscow, 3 Electrolitny pr., build. 12,


Objective of research. A study of species composition of gastrointestinal nematodes of Odocoileus hemionus introduced into Russia.

Materials and methods. The helminthological material was collected in February 2015 based on autopsy of black-tailed deer females. Black-tailed deer was introduced into Russia from North America in December 2014. The content of abomasum and small intestine (matrix) was examined. In laboratory conditions, nematodes were picked out from the matrix. Based on peculiarities of male reproductive system of nematodes their species belonging was confirmed. Due to great morphological similarities of females, their species identification was not conducted.

Results and discussion.  3355 nematodes were found (1792 females and 1563 males). The nematodes were assigned to following species: Trichostrongylus axei, T. colubriformis, T. vitrinus and Nematodirus filicollis.

To our knowledge, this is the first study of the helminth fauna of black-tailed deer on the territory of Russia. All helminth species were detected in this host in North America.  

Previously detected nematode species have been already found in ruminants in Russia. However, based on the data of life cycles of discovered nematodes, the season when the material was collected, and a short period between the importation and death of the investigated animal, we can conclude that animal were infected with nematodes prior to the importation to Russia.

Keywords: black-tailed deer, Odocoileus hemionus, nematodes, Trichostrongylus axei, T. colubriformis, T. vitrinus, Nematodirus filicollis.


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© 2017 The Author(s). Published by All-Russian Scientific Research Institute of Fundamental and Applied Parasitology of Animals and Plants named after K.I. Skryabin. This is an open access article under the Agreement of 02.07.2014 (Russian Science Citation Index (RSCI) and the Agreement of 12.06.2014 ( Sciences section: