Helminthes’ ecology




Head of the Laboratory – Atrashkevich Gennady I., Candidate of Biology (PhD) ( This email address is being protected from spambots. You need JavaScript enabled to view it. )

Principal Researcher – Nikishin Vladimir P., Doctor of Biology, ( This email address is being protected from spambots. You need JavaScript enabled to view it. )

Senior Researcher – Orlovskaya Olga M., Candidate of Biology (PhD) ( This email address is being protected from spambots. You need JavaScript enabled to view it. )

Leading Researcher – Regel Kira V., Candidate of Biology (PhD) ( This email address is being protected from spambots. You need JavaScript enabled to view it. )

Leading Researcher – Pospekhova Natalia A., Candidate of Biology (PhD) ( This email address is being protected from spambots. You need JavaScript enabled to view it. )

Researcher – MikhailovaEkaterina I. ( This email address is being protected from spambots. You need JavaScript enabled to view it. )

Researcher – Skorobrechova Ekaterina M., Candidate of Biology (PhD) ( This email address is being protected from spambots. You need JavaScript enabled to view it. )

Researcher - Pospekhov Vitalyi V.

Junior Researcher – Kusenko Ksenia V.

Laboratory Assistant – Mashukova Olga F. ( This email address is being protected from spambots. You need JavaScript enabled to view it. )

The laboratory was organized since foundation of the Department of BPN NEISRI and IBPN.


Major trends of research

Complex study of helminthes on the territory of the North-East of Russia is realized according to the following main trends:

  • Study of fauna, taxonomy, life cycles and ecology of larval forms of helminthes in natural biocenoses.
  • Study of morphological and functional aspects of parasite-host relationships.
  • Study of taxonomical and ecological diversity of helminthes of amphiberingian distribution.
  • Study of structural and functional organization of helminthes’ parasitic systems in Arctic and Subarctic ecosystems.


Main research achievements of the Laboratory

At the first stage (1968-1993) the scientific activity of the laboratory was connected with the Chaun biological field station of IBPN (68.55оn.l.), on the basis of which the long-term study of helminthes of the animals from North-Eastern Chukotka (model region of Asiatic Subarctic) was conducted, results of which are unique in the field of Arctic biology and known wide world. For the first time data on taxonomic and ecologic diversity of larval form of hydrotopical helminthes in tundra ecosystems were obtained.

Since the beginning of the 90-ties main attention was paid to helminthological study of animals in ecosystems of the Okhotsk-Kolymsk region. The most prominent results of that period are the following:

  • First conception of taxonomical and ecological diversity of helminthes in the Okhotsk-Kolyma region is given. By now aquatic and terrestrial animals of the region were revealed to have ephebic and larval forms of 550 helminthes’ species and forms belonging to 256 genera, 105 families, 20 orders, 6 classes of 3 types of animal kingdom. Cestodes take leading position by diversity of species, genera and families in the region (191 species, 86 orders, 24 families), as well as trematodes (175 species, 78 orders, 37 families). Nematodes slightly yield to them (148 species, 77 orders, 37 families) and acanthocephalans take the last position (36 species, 15 orders, 7 families). Relatively large taxonomical and ecological diversity of helminthes in the region is determined both by general species richness of fauna and special physiographic characteristics: littoral areas with high biological productivity, location on the crossroad of birds’ seasonal migration lines, abundance of salmon rivers with diverse ichthyocenoses. Larval forms of different species of trematodes absolutely dominate in all studied marine and littoral biocenoses and ecosystems on the coast of the Sea of Okhotsk, while cestodes, nematodes and acanthocephalans are of substantially less number.  Ephebic parasites of these groups infest terrestrial vertebrates inclining to live on the sea coast, including settled and migratory birds, to the same extent.
  • For the first time scaling analysis of taxonomic state and biological peculiarities of acanthocephalans from fishes of genus Neoechinorhynchus (Acanthocephala) in the North-East of Asia, was performed; new transberingian acanthocephalan N. beringianus Mikhailova et Atrashkevich, 2008 was described, and main peculiarities of its ecology were examined; morphological peculiarities and habitat boundaries of the second transberingian species of wide distribution over the Far East of Russia - N. salmonis Ching, 1984, were stated.
  • First data on helminthes faunistic status of the salmon rivers’ basins of the northern coast of the Sea of Okhotsk, were obtained.
  • For the first time significance of the fresh-water isopods, including water slater Asellus s. str. in parasitic systems of several common species of acanthocephalans from fresh water fishes, waterfowls and semi-aquatic birds of the Far East of Russia, was analyzed. Hypothesis about Beringian origin and distribution center of acanthocephalans from genus Acanthocephalus was stated.
  • By the example of acanthocephalans for the first time criteria for determining of territorial modifications of parasite systems of common species of helminthes from the birds of Subarctic were established. A hypothesis was stated about existence among them of isolated subarctic populations of parasites, belonging to polyzonal widely spread species.
  • For the first time a comprehensive conception was composed about morphology and hystogenesis of borderline tissue (tegument) and skin musculature of acanthocephalans. Ultrafine description of embryonal larvae (acanthors) of acanthocephalans was made, and fine structure and formation process of embryonal shells of eggs from Polymorphidae family of acanthocephalans were studied; morpho-functional peculiarities of embryonal shells of acanthocephalans, referring to different classes, were defined. Structure and formation mechanism of cyst around acanthocephalans’ larvae was studied. Cyst was proved to be formed as a result of two successive secretion processes of its material by larval tegument, and not by organism of intermediate host.
  • A long-term study of scolex morphofunctional peculiarities of cyclophillid cestodes, revealing interconnection aspects of morphology of integumentary, nerve and muscle tissues with ecological peculiarities and structure of fixation organs of cestodes, was completed. Fine morphology of scolex covers, including glandular apparatus, and, besides, excretory and nerve systems at representatives of 8 cestode’s species of suborder Hymenolepidata, have been studied for the first time.
  • All-round morphological study of capsule formation at acanthocephalans of genus Corynosoma in sea fishes (paratenic hosts) of different species, has been conducted for the first time. Apparently, main function of capsule, surrounded cystacanth in paratenic host, is to provide long survival of acanthocephalan’s larva till it gets into organism of definitive host.


Total number of defended theses

Two Doctorate and nine Candidate (PhD) theses have been defended for period of existence of the Laboratory.


Total number of publications

During 2001-2011, 160 research papers of the laboratory workers, including 4 monographs, had been published.


Main publications

Atrashkevich G.I., Orlovskaya O.M. 1995. Parasites. Chapter XII // Siberian newt: ecology, behavior, preservation (Series “Species of faunas in Russia and in neighboring countries”). M.: Nauka. Pp. 164-172.

Atrashkevich G.I. 1997. Helminthes’ parasitic systems of the birds from Beringia // Vestnik FEB RAS. Vladivostok: Dal’nauka. #2(72). Pp. 39-46.

Atrashkevich G.I. 1999. Parasitic systems of the birds’ helminthes in Subarctic and their modifications in areals // Science in the North-East of Russia: 275th anniversary of RussianAcademy of Sciences. Magadan: NESC FEB RAS. Pp. 129-138.

Atrashkevich G.I. 2001. Role of Aquatic sow bugs Asellus s.str. (Crustacea: Isopoda: Asellidae) in parasitic systems of helminthes of the Far East of Russia // V. Y. Levanidov,s biennial Memorial Meetings. Ed. 1. Vladivostok: Dal’nauka. Pp. 87-95.

Atrashkevich G.I., Orlovskaya O.M., Regel K.V., Mikhailova E.I., Pospekhov V.V.2005. Parasitic worms from the animals of the TauyskBay coast // “Biodiversity of the TauyskBay of the Sea of Okhotsk”. Vladivostok: Dal’nauka. P. 172-251. (In Russian).

 Atrashkevich G.I. 2009. Spiny-headed worms (Acanthocephala) in the basin of the Sea of Okhotsk: taxonomic and ecological diversity // Proceedings of Zoological institute RAS. 313 (3): 350-358. (In Russian).

 Atrashkevich G.I., Sonin M.D. 2010. Spiny-headed worms (Acanthocephala) of the birds of Subarctic region // Transactions of Center for Parasitology IPEE RAS. V.46: Biodiversity and ecology of parasites. Moscow: Nauka. P. 18-32. (In Russian).

 Atrashkevich G.I., Orlovskaya O.M., Regel K.V.2011. Parasites (helminths, leeches and crustaceans) of animals // “Flora and fauna of the reserve “Magadansky”. Magadan: NESC FEB RAS. P. 88-92; 227-246 (Suppl. 4 – Parasites). (In Russian).

 Bondarenko S.K., Kontrimavichus V.L. 2006. Aploparaksidae of wild and domesticated birds. Fundamentals of Cestodology V. 14. Ed. S.O. Movsesyan. M.: Nauka. 443 pp. (In Russian).

 Galkin A.K., Regel  K.V., Mariaux J.2006. Redescription of Hymenolepis jaegerskioeldi Fuhrmann, 1913 (Cestoda, Hymenolepididae) and its new findings in eider ducks // Systematic Parasitology.  64 (1): 1-11.

 Galkin A.K., Mariaux J., Regel K.V., Skirnisson K. 2008. Redescription and new data on Microsomacanthus diorchis Fuhrmann, 1913 (Cestoda, Hymenolepididae) // Systematic Parasitology. 70 (2): 119-130.

 Mikhailova E.I., Atrashkevich G.I., Kazakov B.E. 2004. Study of acanthocephalans of genus Neoechinorhynchus (Acanthocephala : Neoechinorhynchidae) in Russia and first findings of N . salmonis Ching , 1984 in Palaearctic // Progress of Common Parasotology. M.: Nauka. Pp. 211-220. (Proceedings of the Parasitology Institute; V. 44).

Mikhailova E.I., Atrashkevich G.I. 2008. Description and morphological variability of Neoechinorhynchus  beringianus n. sp. (Acanthocephala: Neoechinorhynchidae) from north-eastern Asia // Systematic Parasitology. 71 (1): 41-48.

 Mikhailova E.I.2010. On property proposed by V. Ya. Trofimenko for differentiation between Neoechinorhynchus crassus Van Cleave, 1919 and N. tumidus Van Cleave et Bangham, 1949 (Acanthocephales: Neoechinorhynchidae) // Transactions of Center for Parasitology IPEE RAS. V. 46: Biodiversity and ecology of parasites. Moscow: Nauka. P. 148-155. (In Russian)

 Mikhailova E.I. 2013. Origination of a separate form of Neoechinorhynchus salmonis Ching, 1984 (Acanthocephales: Neoechinorhynchidae) in severe environment of the Asian Arctic // Parasitology Research. 112: 1973-1981.

 Nikishin V.P. 2000. Ultrafine morphology of the covers of acanthocephalans  (Acanthocephala). Parasitology. V. 34. #2. Pp. 125-143.

Nikishin V.P. 2001. Structure and formation of embryonic envelopes of acanthocephalans. Izvestiya RAN. Biological series. #1. Pp. 47-62.

Nikishin V.P. 2004. Subsurface musculature of acanthocephalans and its role in formation of intercellular material.Izvestiya RAN. Biological series. #6. Pp. 716-731.

Nikishin V.P. 2004. Cytomorphology of acanthocephalans: covers, protective envelopes, embryonic larvae. M. GEOS. 233p.

Nikishin V.P. 2004. Ultrastructure of the eggs of Polymorphus magnus (Acanthocephala, Polymorphidae) // Parasite. 11 (1): 33-42.

 Nikishin V.P. 2005. A host-parasite interface // Vestnik NESC FEB RAS. 3: 35-40. (In Russian).

 Nikishin V.P., Skorobrekhova E. M. 2007. Encapsulation of Acanthocephalans Corynosoma sp. in Two Reservoir Host Species // Doklady Biological Sciences. 417: 462-464.

 Nikishin V.P. 2007. Ultrastructure of egg shell of the acanthocephalan Neoechinorhynchus crassus // Journal of Helminthology. 81 (3): 233-237.

 Nikishin V.P. 2011. Convergence of the Cyst in Cysticercoids (Cestoda, Hymenolepidata) and the Tegument in Cystacanths (Acanthocephala) // Biology Bulletin. 38 (2): 195–202.

 Nikishin V.P., Lebedev D.V. 2011. Experimental Evidence of the Defense Role of the Exocyst in the Metacestode of Microsomacanthus lari Belogurov et Kulikov, in Spasskaja, 1966 (Cestoda: Hymenolepididae) // Russian Journal of Marine Biology. 37  (1): 80–83.

 Orlovskaya O.M. 2010. The new information about life cycles of some species of the trematodes of intertidal fishes of the northern part of the Sea of Okhotsk // Transactions of Center for Parasitology IPEE RAS. V. 46: Biodiversity and ecology of parasites. Moscow: Nauka. P. 188-199. (In Russian).

 Orlovskaya O.M., Atrashkevich G.I. 2012. First data on the helminthes of siberian wood frog Rana amurensis Boulenger, 1886 (Amphibia: Anura) in the north-eastern outskirts of the areal // Vestnik NESC FEB RAS. 3: 42-51. (In Russian).

 Poddubnaya L., Pospekhova N. 2011. Ultrastructure of the cirrus sac of the male strobila of Shipleya inermis (Fuhrmann, 1908) (Cestoda: Cyclophyllidea) // Helminthologia. 48 (3): 174–183.

 Pospekhov V.V., Atrashkevich G.I., Orlovskaya O.M. 2009. The helminth fauna in Salmon (Salmonidae) of the northern Priokhotje (the Taui R. and the Yama R. basin) // Vestnik NESC FEB RAS. 1: 93-101. (In Russian).

 Pospekhov V.V., Atrashkevich G.I., Orlovskaya O.M. 2010. Fish parasites from the GizhigaRiver basin (northern coast of the OkhotskSea) // Izvestiya TINRO. Vol. 163: 365-378.

 Pospekhova N. A., Pospekhov V.V. 1998. Ultrastructure of the scolex’s suckers at Diorchis stefanskii (Cestoda , Hymenolepididae) // Parasitology. V. 32. Ed. 4. Pp. 347-351.

Pospekhova N.A. 2009a. Rostellar glands in two cestodes of the family Dilepididae. Parazitologiya. 43 (1): 57-69. (In Russian).

 Pospekhova N.A. 2009b. Rostellar sac gland in Cloacotaenia megalops (Cestoda: Hymenolepididae) // Invertebrate Zoology.  6 (1): 33-46. (In Russian).

 Pospekhova N.A. 2010. Rostellar apparatus fine morphology in Sobolevicanthus spasskii (Cestoda: Cyclophyllidea) // Transactions of Center for Parasitology IPEE RAS. V.46: Biodiversity and ecology of parasites. Moscow: Nauka. P. 204-211.

 Pospekhova N.A. 2012. Specific and nonspecific covers secretion in Hymenolepidata (Cestoda: Cyclophyllidea) // Transactions of Center for Parasitology IPEE RAS. V. 47: Morphology, Systematics and Ecology of Parasites. P. 207-214. (In Russian).

 Regel K.V. 1998. Fauna of cestodes within family Hymenolepididae: of Retinometra genus // Parasitology. V. 32. Ed. 6. Pp. 519-529.

Regel K.V. 2000. Fauna of cestodes within family Hymenolepididae from puddle ducks of Chukotka. Genus Dicranotaenia Railliet , 1892 // Parasitology. V. 34. Ed. 4. Pp. 302-314.

Regel K.V. 2001. Fauna of cestode within family Hymenolepididae from puddle ducks of Chukotka: on validity of genus Echinatrium Spassky et Jurpalova , 1965 // Parasitology. V. 35. Ed. 2. Pp. 114-123.

Regel K.V.2005. On the fauna of the cestode family Hymenolepididae from ducks of Chukotka: Microsomacanthus parasobolevi sp. nov. – the wide distribution parasite of eider ducks // Parazitologiya, 39 (2): 146-154. (In Russian).

 Regel K.V., Atraschkevitch G.I. 2008. The role of marine amphipods in the life cycles of the cestode genus at Bering Sea coast of Chukchi peninsula. First results of the investigation // Parazitologiya, 42 (1): 31-40. (In Russian).

 Regel K.V., Pospekhova N.A.2012. Biodiversity and morphological features of metacestodes – dragonflies larvae’ parasites of the North-East Asia // Vestnik NESC FEB RAS. (4): 75–83. (In Russian).

 Rusin L.Y., leshin V.V., Tchesunov A.V., Atrashkevich G.I. 2003. The 18S ribosomal RNA gene of Soboliphyme baturini Petrow, 1930 (Nematoda: Dioctophimida) and its implications for phylogenetic relationships within Dorylaimia // Nematology. 5 (4): 615-628.

 Skorobrechova E.M., Nikishin V.P. 2011. Structure of capsule surrounding acanthocephalans Corynosoma strumosum in paratenic hosts of three species // Parasitology Research. 108 (2): 467-475.

 Skorobrechova E., Nikishin V., Lisitsyna O. 2012. Structure of capsule around acanthocephalan Corynosoma strumosum from uncommon paratenic hosts – lizards of two species // Parasitology Research. 110 (1): 459-467.



Tel. : (4132) 63-45-42.