Research Article |
Corresponding author: Irina A. Kaygorodova ( irina@lin.irk.ru ) Academic editor: Samuel James
© 2020 Maria A. Baturina, Irina A. Kaygorodova, Olga A. Loskutova.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Baturina MA, Kaygorodova IA, Loskutova OA (2020) New data on species diversity of Annelida (Oligochaeta, Hirudinea) in the Kharbey lakes system, Bolshezemelskaya tundra (Russia). ZooKeys 910: 43-78. https://doi.org/10.3897/zookeys.910.48486
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One of the features of the tundra zone is the diversity of freshwater bodies, where, among benthic invertebrates, representatives of Annelida are the most significant component in terms of ecological and species diversity. The oligochaete and leech faunas have previously been studied in two of the three largest lake ecosystems of the Bolshezemelskaya tundra (the Vashutkiny Lakes system, Lake Ambarty and some other lakes in the Korotaikha River basin). This article provides current data on annelid fauna from the third lake ecosystem in the region, Kharbey Lakes and adjacent water bodies. The annelid fauna includes 68 species, including 51 oligochaete species, and 17 species of leeches. For each species, we give information on currently recognised classification, taxonomic synonymy, geographical distribution, findings of the species within the Russian tundra, and brief ecological characteristics.
Annelid biodiversity, lakes, leeches, northwest Russia, oligochaetes, tundra
The tundra covers an area of approximately 15 % of the entire territory of Russia, along the entire coast of the Arctic Ocean, from the Finland border in the west to the Bering Strait in the east. Bolshezemelskaya tundra is a vast plain with an area of 1,660 km2 located between the Pechora and Usa rivers (in the west and south) and the Ural Mountains in the east, adjacent to the Barents Sea in the north. Hills with prevailing heights of 100–150 m and moraine ridges of up to 250 m high characterises its relief. The main part of the Bolshezemelskaya tundra is occupied by permafrost. Here, peat bog and silt-marsh soil types prevail; in the south, there are weakly podzol-gley soils. The climate is subarctic, with long cold winters and short cool summers. Many rivers which are tributaries of the Pechora and Usa flow through the plain. The main watershed is located in its central part, with the largest lakes systems in the east of the Bolshezemelskaya tundra: the Vashutkiny, Padimeyskiye, Kharbey Lakes and the other lakes of the Korotaikha River basin.
In this study, we focused on the waters of the Kharbey system, the main element of which is Bolshoy Kharbey Lake, located in the headwaters of the River Kharbeytyvis, the right tributary of the Seyda River. In addition, this system includes the lakes Golovka and Maliy Kharbey. The larger lakes are interconnected by natural channels and are surrounded by numerous shallow adjacent lakes and have a glacial origin. The Bolshoy Kharbey is the largest lake of the system (
The first studies of the Kharbey system were carried out in 1965–1972 in order to evaluate the productivity and environmental features of lakes (
The aim of this study is to further investigate the annelid species diversity and spatial distribution in the Kharbey Lakes system, as one of the largest systems of the Bolshezemelskaya tundra, combining the available literature data with new information about the Annelida fauna.
Geographical location of the study region. (A) The map of Russia showing location of the Bolshezemelskaya tundra (Bt). The numbers indicate the major studied systems of tundra lakes: 1 – the Kharbey lake system, 2 – the Padimeyskiye lake system, 3 – Lake Ambarty, 4 – the Vashutkiny lake system; 5 – Lakes of the Pechora River Delta; 6 – lakes of the More-yu River basin (lower reaches); 7 – lakes of the More-yu River basin (upper reaches); 8 – lakes of central part of Bt; 9 – Lake Ngosovey. (B) Insert showing the Kharbey Lake system: K1, K2, D1, D2, and L are small lakes adjacent to Lake Bolshoy Kharbey.
Previously published information and an extensive collection of new specimens from fresh water bodies of the Kharbey Lake area collected by M. Baturina and O. Loskutova in 1998-99, 2009, 2010, and 2012 were used in this study. Within this study, the following water bodies of the Kharbey lakes system (Bolshezemelskaya tundra) were investigated: Lake Bolshoy Kharbey, Lake Golovka, and some unnamed smaller lakes adjacent to Lake Bolshoy Kharbey, arbitrarily identified as K1, K2, L, D1, and D2 (Fig.
Oligochaete samples were taken with a Petersen grab (sampling area 400 cm2) on soft substrates and with a handle blade trawl (
Newly collected specimens were fixed and kept in 80% ethanol solution. Morphological analysis was performed using a stereomicroscope MSP-2 var. 2 (LOMO) and compound microscope Leica DM 4000. The worm species determinations were based on existing taxonomic keys (
The data underpinning the analysis reported in this paper are deposited at GBIF, the Global Biodiversity Information Facility, and are available at https://doi.org/10.15468/b24asb.
This research describes the Annelida fauna of one of the largest lakes systems of Bolshezemelskaya tundra, Kharbey lakes. We show a list of oligochaete species (Oligochaeta), leeches (Hirudinea) and leech-like parasites (Acanthobdellida) for various types of water bodies of the Kharbey lakes system and the nearby Syattey-ty lakes system, and revise taxonomic and nomenclatural changes since the last fauna surveys in the lakes of Bolshezemelskaya tundra (
The Oligochaeta fauna of tundra water bodies is considered to be significantly poorer in comparison with the nearby northern areas, such as the Kola Peninsula (
Oligochaete worms dominated the total numbers and biomass of zoobenthos at different depths on all the studied sediment types in the Kharbey system. The average abundance of oligochaetes showed the highest values in the upper and lower littoral zones (0–3–6 m), whereas on silts in the profundal zone (depths 6–9 m, max 18 m), the average abundance of the group was half as great. In most biotopes, S. ferox and T. tubifex were among the dominant species. On the gravel-pebble substrates of the littoral zone, subdominants included Nais barbata Müller, Uncinais uncinata (Øersted), Tubificinae gen. sp. juv., and Enchytraeidae gen. sp. juv.; the same species were also dominant on sandy sediment, along with Cognettia glandulosa (Michaelsen), L. variegatus and Piguetiella blanci (Piguet). On clayey substrate of the littoral and sublittoral zones, there was a group of minor species: Chaetogaster diaphanus (Gruithuisen), Nais alpina Sperber, Nais bretscheri Michaelsen, Nais pseudobtusa Piguet, U. uncinata, S. ferox and Lophochaeta ignota (Štolc), Enchytraeidae gen. sp. juv.; on profundal silts were N. pseudobtusa and Vejdovskyella comata (Vejdovský).
The species distribution of oligochaetes in lakes is usually determined by the substrate (
The leech and leech-like taxonomic diversity includes 17 species belonging to three orders (Acanthobdellida Grube, Rhynchobdellida Blanchard and Arhynchobdellida Blanchard), five families (Arhynchobdellidae Grube, Glossiphoniidae Vaillant, Piscicolidae Johnston, Erpobdellidae Blanchard and Haemopidae (Richardson)), and nine genera (Acanthobdella Grube, Glossiphonia Johnston, Helobdella Blanchard, Hemiclepsis Vejdovský, Theromyzon Philippi, Piscicola de Blainville, Cystobranchus Diesing, Erpobdella de Blainville, and Haemopis (Savigny)). We collected only three of the five leech species recorded by
Information on exact systematic position, geographical distribution and brief ecological characteristics for each Annelida species is given in the list below.
Holarctic species. In the Russian tundra: Murmansk Region, coast of the White Sea (
Lake Bolshoy Kharbey (67°32'48.3"N, 62°53'49.7"E; 67°34'34.3"N; 62°52'17.4"E).
The species was recorded on clay, silted sand, large pebbles, often in moss and algal cover (depth 0.8 m, maximum up to 5.2 m).
Stylaria lomondi Martin, 1907
Stylaria brevirostris Wolf, 1928
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E); Lake Golovka (67°36'0.6"N, 62°55'28.6"E).
The species was recorded on silt or silted sand (depth 6.2–7.5 m).
Naidium palmeni Munsterhjelm, 1905
Pristina elegans Finogenova, 1966
Pristina napocensis Pop, 1973
Europe. In the Russian tundra: Lake Balban-ty (
Lake Bolshoy Kharbey (67°31'49.9"N, 62°52'40.1"E), temporary pond near Kharbey (67°58'N, 62°34'60"E).
The species lives in lake on clayey sediment (at a depth of up to 5.8 m), and temporary ponds within wetlands.
Nais diaphanus Gruithuisen, 1828
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'49.4"N, 62°53'6.6"E; 67°31'49.9"N, 62°52'40.1"E); Lake L (67°35'46"N, 62°49'44.8"E); Lake K1 (67°36'17.6"N, 62°52'35"E); Lake Golovka (67°35'50"N, 62°55'25.3"E).
The species inhabits various sites with rocky, sandy, and vegetative substrates (depths 0.3–4.2 m).
Nais diastrophus Gruithuisen, 1828
Chaetogaster palustris Pointner, 1914
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'3.5"N, 62°52'17.9"E; 67°32'48.3"N, 62°53'49.7"E; 67°33'48.2"N, 62°55'2.6"E; 67°34'34.3"N, 62°52'17.4"E).
The species was recorded on stones with algal cover and on sand, at depths of 0.5–3.8 m.
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°32'44.2"N, 62°55'22.3"E).
The species of rare in studied region; it was found on silted sand at a depth of 3.8 m.
In Europe and North America (Great Lakes). In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'3.5"N, 62°52'17.9"E; 67°34'34.3"N, 62°52'17.4"E; 67°31'49.9"N, 62°52'40.1"E; 67°32'49.4"N, 62°53'6.6"E; 67°31'49.9"N, 62°52'40.1"E); Lake Golovka (67°35'50"N, 62°55'25.3"E; 67°36'9.4"N, 62°56'39.9"E).
The species inhabits stones with algal cover or sand with detritus (depth 0.2–1.3 m).
Holarctic species. Sino-Indian Region and Australia. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°32'48.3"N, 62°53'49.7"E; 67°32'49.4"N, 62°53'6.6"E; 67°33'48.2"N, 62°55'2.6"E; 67°34'34.3"N, 62°52'17.4"E; 67°35'27.5"N, 62°55'30.7"E); Lake Golovka (67°36'9.4"N, 62°56'39.9"E).
The species was recorded on sands, stones with algal cover, as well as on clay and submerged macrophytes (depth 0.5–2.8 m).
Holarctic species. In the Russian tundra Murmansk Region (
Lake Bolshoy Kharbey (67°31'21.1"N, 62°53'28.6"E; 67°32'22.1"N, 62°52'10.7"E).
Within the studied water bodies, N. behningi was found on stony sediments with moss cover (depth 0.7–2.0 m).
Holarctic.
Lake Bolshoy Kharbey (67°32'49.4"N, 62°53'6.6"E; 67°31'38"N, 62°53'2.8"E; 67°32'49.9"N, 62°53'40.1"E).
The species inhabits stony ground and mosses among large pebbles, typically at a depth of up to 1.0 m; it occasionally occurred at a depth of 2.5 m.
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°32'44.2"N, 62°55'22.3"E; 67°32'49.9"N, 62°53'40.1"E; 67°34'3.5"N, 62°52'17.9"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E); Lake D1 (67°35'52.8"N, 62°53'52.6"E); Lake Golovka (67°36'06"N, 62°55'28.6"E; 67°35'50"N, 62°55'25.3"E); Lake L (67°35'44.5"N, 62°49'39.2"E), temporary pond near Kharbey (67°58'00"N; 62°34'60"E).
In bulk of the studied water bodies, N. communis was observed on silted sand, boulders with moss and algal cover, and submerged macrophytes (depth 0.3–1.2 m). In Lake Golovka, it lives on a silted substrate at a depth of 7.5 m. It was also found in small lakes with moss mats floating off shore.
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°35'7.7"N, 62°54'46.9"E; 67°34'34.3"N, 62°52'17.4"E; 67°33'48.2"N, 62°55'2.6"E; 67°34'3.5"N, 62°52'17.9"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E); Lake Golovka (67°36'9.4"N, 62°56'39.9"E).
Specimens were sampled among pebbles and boulders, as well as on sand or submerged macrophytes (depth 2.5 m or less).
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°32'50"N, 62°52'26.3"E; 67°34'N, 62°57'E); temporary near Kharbey (67°58'00"N, 62°34'60"E).
The species was recorded along the lakeshore at a depth of 0.8 m or less, on pebble-gravel or silty substrates, and in hollows and small bodies of water, formed by cross-country tracks.
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E; 67°34'34.3"N, 62°52'17.4"E; 67°34'3.5"N, 62°52'17.9"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'50"N, 62°52'26.3"E; 67°32'49.9"N, 62°53'40.1"E); Lake K2 (67°32'55.7"N, 62°51'39.7"E; 67°32'44.5"N, 62°51'38.2"E); Lake D1 (67°35'52.8"N, 62°53'52.6"E), Lake K1 (67°36'27.6"N, 62°51'58.4"E); Lake Golovka (67°36'06"N, 62°55'28.6"E), temporary pond near Kharbey (67°58'00"N, 62°34'60"E).
Specimens were sampled from different hard substrates or on the vegetated areas (depth 0.3–2.0 m). In water bodies adjacent to Kharbey, N. pseudobtusa prefers clayey or silted sand (depth of 7.5 m); single specimens were found in small isolated lakes with floating moss mats and thick sedge overgrowths.
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°31'38"N, 62°53'2.8"E; 67°32'22.1"N, 62°52'10.7"E).
The species was found mainly on sand between stones at a depth of 1.0 m or less.
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E; 67°32'44.2"N, 62°55'22.3"E; 67°32'49.4"N, 62°53'6.6"E; 67°31'38"N, 62°53'2.8"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E); Lake Golovka (67°35'50"N, 62°55'25.3"E); temporary pond near Kharbey (67°58'00"N, 62°34'60"E).
The species was collected from submerged macrophytes, or stones and sand with moss cover (depth 0.2–1.3 m). It was also found in small water bodies or in humid depressions without open water.
Nais blanci Piguet, 1906
Western Palaearctic, NE of the USA. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E; 67°34'N, 62°57'E; 67°34'3.5"N, 62°52'17.9"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'49.9"N, 62°53'40.1"E); Lake L (67°35'44.5"N, 62°49'39.2"E), Lake K2 (67°32'56.1"N, 62°51'39.7"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E; 67°36'17.6"N, 62°52'35"E); Lake Golovka (67°35'50"N, 62°55'25.3"E; 67°36'9.1"N, 62°55'50.6"E).
The species inhabits sandy and stony-sandy substrates with algae and moss at depths of 0.5–2.5 m except Lake Bolshoy Kharbey, where it occurs at a depth of 6.2 m.
Stylaria parasita Schmidt, 1847
Ripistes rubra Lastočkin, 1926
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E; 67°34'3.5"N, 62°52'17.9"E; 67°33'45.9"N, 62°54'34.7"E; 67°32'44.2"N, 62°55'22.3"E; 67°32'50"N, 62°52'26.3"E; 67°31'38"N, 62°53'2.8"E); Lake L (67°35'41.5"N, 62°49'34.7"E; 67°35'46"N, 62°49'44.8"E); Lake K2 (67°32'56.1"N, 62°51'39.7"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E; 67°36'22.1"N, 62°52'20.3"E); Lake Golovka (67°35'50"N, 62°55'25.3"E; 67°36'9.1"N, 62°55'50.6"E).
The worms were often found in silt, less often on sandy-stony substrate with algae and moss cover, or on submerged macrophytes (depth 0.2–2.5 m, occasionally up to 6.0 m).
Nais appendiculata Udekem, 1855
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°35'7.7"N, 62°54'46.9"E; 67°34'3.5"N, 62°52'17.9"E; 67°34'N, 62°57'E; 67°32'48.3"N, 62°53'49.7"E; 67°32'22.1"N, 62°52'10.7"E); Lake Golovka (67°35'50"N, 62°55'25.3"E; 67°36'9.1"N, 62°55'50.6"E); Lake K1 (67°36'22.1"N, 62°52'20.3"E; 67°36'17.6"N, 62°52'35"E); temporary pond near Kharbey (67°58'00"N, 62°34'60"E).
In the studied lakes, S. appendiculata inhabits mainly silt or stones with algal cover (depth 0.2–6.0 m). The worms were less often found in small or temporary ponds with floating moss mats and overgrowths of sedges off the shore.
Nais josinae Vejdovský, 1884
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°35'7.7"N, 62°54'46.9"E; 67°34'3.5"N, 62°52'17.9"E; 67°32'44.2"N, 62°55'22.3"E; 67°32'50"N, 62°52'26.3"E; 67°32'49.9"N, 62°53'40.1"E); Lake Golovka (67°36'21.2"N, 62°56'6.6"E); Lake D1 (67°35'52.8"N, 62°53'52.6"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E; 67°36'22.1"N, 62°52'20.3"E); Lake K2 (67°32'56.1"N, 62°51'39.7"E).
The species was recorded in most lakes of the study area, mainly on silted sand or clay (depths 0.5–1.1 m), rarely deeper on silted stony-sand or detritus (depths 4.2–6.0 m).
North America, Europa, Asia. In the Russian tundra: the Anadyr River basin (
Lake Bolshoy Kharbey (67°33'48.2"N, 62°55'2.6"E; 67°32'48.3"N, 62°53'49.7"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E; 67°36'22.1"N, 62°52'20.3"E).
The species is rare. It was noted in Lake Bolshoy Kharbey on silted sands (depth 9.5–13.8 m); in adjacent to Kharbey lakes is on clay substrate (depth no more than 0.8 m).
Nereis lacustris Linnaeus, 1767
Nais proboscidea Müller, 1774
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E; 67°32'50"N, 62°52'26.3"E); Lake K2 (67°32'55.7"N, 62°51'39.7"E); Lake K1 (67°36'29.4"N, 62°52'58.3"E); Lake Golovka (67°35'50"N, 62°55'25.3"E; 67°36'9.4"N, 62°56'39.9"E).
The worms are very mobile; they prefer submerged macrophytes as substrate. S. lacustris was also observed on silted stones (depth 0.3–1.0 m).
Nais uncinata Ørsted, 1842
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E; 67°35'27.5"N, 62°55'30.7"E; 67°34'3.5"N, 62°52'17.9"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'48.3"N, 62°53'49.7"E; 67°32'49.9"N, 62°53'40.1"E); Lake Golovka (67°36'9.4"N, 62°56'39.9"E; 67°36'21.2"N, 62°56'6.6"E); Lake K1 (67°36'17.6"N, 62°52'35"E); Lake K2 (67°32'55.7"N, 62°51'39.7"E).
The species was recorded on silt, silted sand, and boulders, from the edge of the water to a depth of 4.5 m. In adjacent to Kharbey lakes, U. uncinata prefers moss and algal cover among the rocks in the shore zone. Common species for tundra zone.
Bohemilla comata Vejdovský, 1884
Holarctic species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E; 67°32'48.3"N, 62°53'49.7"E; 67°32'49.9"N, 62°53'40.1"E); Lake L (67°35'41.5"N, 62°49'34.7"E); Lake K2 (67°32'55.7"N, 62°51'39.7"E; 67°32'44.5"N, 62°51'38.2"E); Lake K1 (67°36'22.1"N, 62°52'20.3"E); Lake Golovka (67°35'50"N, 62°55'25.3"E; 67°36'17.3"N, 62°56'13.1"E).
Within the area of study, V. comata was recorded infrequently, living on sand, silt, and clay (depths 4.5–6.5 m, rarer up to 9.8 m).
Bohemilla macrochaeta Lastočkin, 1921
Vejdovskyella grandisetosa Finogenova, 1962
Eastern Europe. In the Russian tundra: the Pechora River delta (
Lake Bolshoy Kharbey (67°33'45.9"N, 62°54'34.7"E; 67°34'55.7"N, 62°57'44"E); Lake L (67°35'44.5"N, 62°49'39.2"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E); Lake Golovka (67°36'06"N, 62°55'28.6"E; 67°36'9.1"N, 62°55'50.6"E).
The species prefers sandy-clay or clay at the shore sites. Rarer, V. macrochaeta was observed on clay sediments at a depth of 8.0-9.5 m.
Naidium foreli Piguet, 1906
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E); Lake Golovka (67°35'50"N, 62°55'25.3"E).
The species is rare in the area. It was found in the coastal zone of only two lakes, where it was on stones with algae and moss cover, sand or submerged macrophytes.
Cosmopolitan. In the Russian tundra: Vaygach Island (
Lake Bolshoy Kharbey (67°33'48.2"N, 62°55'2.6"E).
The species was observed only in the shore zone on the silted sand and pebbles, or on submerged macrophytes.
Naidium bilobata Bretscher, 1903
Europe. In the Russian tundra: Lake Ambarty and some other lakes in the Korotaikha River basin (
Lake Bolshoy Kharbey (67°32'44.2"N, 62°55'22.3"E); temporary pond near Kharbey (67°58'00"N; 62°34'60"E).
The rare species. It inhabits shallow areas with sandy-clayey substrates.
European north of Russia (
Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E).
Several individuals were found on large pebbles with moss and algal cover located in shallow areas.
Cosmopolitan species. In the Russian tundra: Lodejnyj Island (
Lake L (67°35'41.5"N, 62°49'34.7"E).
Several individuals of P. longiseta were found on macrophytes at a depth of 0.5 m.
Tubifex coccineus Vejdovský, 1876
Tubifex lunzensis Pointner, 1914
Holarctic species but recorded also from Australia and Antarctic islands. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°32'44.2"N, 62°55'22.3"E); temporary pond near Kharbey (67°58'00"N, 62°34'60"E).
The species was observed in the shore zone on silted sand between stones. In temporary pond, R. coccineus was found in wet moss.
Almost cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°32'22.1"N, 62°52'10.7"E); Lake L (67°35'41.5"N, 62°49'34.7"E), Lake K2 (67°32'56.1"N, 62°51'39.7"E).
Single specimens were observed on silt and clay, at depths up to 5.8 m.
Cosmopolitan. In the Russian tundra: lakes in the More-yu River basin (
Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E).
The only specimen was found at a depth of 9.8 m.
Naidium pluriseta Piguet, 1906
Holarctic species, including the Sino-Indian Region and Australia. In the Russian tundra: the Vashutkiny lakes system (
Lake Bolshoy Kharbey (67°34'3.5"N, 62°52'17.9"E); Lake K2 (67°32'56.1"N, 62°51'39.7"E).
The species lives on slightly silted clay (depth 1.5–5.2 m).
Saenuris velutinus Grube, 1879
Tubifex sarnensis Pierantoni, 1904
Peloscolex fontinalis Hrabĕ, 1964
Central and Southern Europe, possibly also northern Europe and Siberia (
Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E; 67°32'50"N, 62°52'26.3"E; 67°32'49.9"N, 62°53'40.1"E); Lake Golovka (67°36'9.4"N, 62°56'39.9"E).
The species is common in the tundra zone. It lives on various sediments (including rocky, sandy, clayey, or silty) in the littoral zone of lakes.
Tubifex templetoni Southern, 1909
Holarctic species. In the Russian tundra: Lake Ambarty and some other lakes in the Korotaikha River basin (
Lake Bolshoy Kharbey (67°34'3.5"N, 62°52'17.9"E); Lake Golovka (67°36'17.3"N, 62°56'13.1"E).
The species prefers soft silts of profundal zone of the lakes (depth of 6.0–6.5 m).
Limnodrilus michaelseni Lastočkin, 1936
Inhabits Eastern Europe. In the Russian tundra: Lake Ambarty and some other lakes in the Korotaikha River basin (
Lake Golovka (67°36'21.2"N, 62°56'6.6"E).
This species is rare in the tundra lakes. It was found on clayey substrate at a depth of 1.7 m.
Limnodrilus parvus Southern, 1909
Cosmopolitan species. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'55.7"N, 62°57'44"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'44.2"N, 62°55'22.3"E; 67°32'48.3"N, 62°53'49.7"E); Lake L (67°35'41.5"N, 62°49'34.7"E); Lake K2 (67°32'56.1"N, 62°51'39.7"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E); Lake Golovka (67°36'9.4"N, 62°56'39.9"E; 67°36'9.1"N, 62°55'50.6"E).
The species is recorded in most lakes of the Kharbey system. Limnodrilus hoffmeisteri prefers silts, but it was also found on sandy-clay sediment and stones with algal cover (from the water edge to 5.2 m in depth).
Isochaeta virulenta Pointner, 1911
Cosmopolitan species. In the Russian tundra: Murmansk Region (Stalmakova 1969;
Lake Bolshoy Kharbey (67°33'48.2"N, 62°55'2.6"E; 67°31'38"N, 62°53'2.8"E; 67°32'49.9"N, 62°53'40.1"E).
The species was found on stones with moss or algal cover and clayey ground (depth 1.1–2.0 m). It was not widely distributed in the Kharbey lakes system previously.
Ilyodrilus hammoniensis Michaelsen, 1901
Tubifex cameranoi De Visart, 1901
Psammoryctes fossor Ditlevsen, 1904
It was found in Western Palearctic, Africa, Great Lakes of North America, and Lake Titicaca in South America. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'3.5"N, 62°52'17.9"E; 67°31'38"N, 62°53'2.8"E); Lake Golovka (67°36'21.2"N, 62°56'6.6"E).
The species was recorded on silty, clayey, sandy-silty sediments, submerged macrophytes or algal cover (depth 0.4–1.1 m).
Peloscolex ferox (Eisen, 1879)
Embolocephalus plicatus Randolph, 1892
Holarctic species. In the Russian tundra: the Pechora River delta (
Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E; 67°35'27.5"N, 62°55'30.7"E; 67°34'3.5"N, 62°52'17.9"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'44.2"N, 62°55'22.3"E; 67°32'50"N, 62°52'26.3"E; 67°31'38"N, 62°53'2.8"E; 67°32'22.1"N, 62°52'10.7"E); Lake Golovka (67°35'50"N, 62°55'25.3"E; 67°36'9.1"N, 62°55'50.6"E; 67°36'17.3"N, 62°56'13.1"E); Lake D1 (67°35'52.8"N, 62°53'52.6"E); Lake K1 (67°36'27.6"N, 62°51'58.4"E) Lake K2 (67°32'55.7"N, 62°51'39.7"E); Lake L (67°35'41.5"N, 62°49'34.7"E; 67°35'46"N, 62°49'44.8"E); temporary pond (67°58' N; 62°34'60"E).
This species is widespread in the area; it was found in most studied water bodies. It inhabits various grounds: stony, sandy, and muddy, often occurs on stones covered by moss or algae or submerged macrophytes (from the water edge up to 9.0 m). In most lakes, S. ferox is dominant in number.
Tubifex ignotus (Štolc, 1886)
Tubifex filum Michaelsen, 1901
Palearctic species, which was also indicated for Great Lakes of North America and Lake Titicaca in South America. In the Russian tundra: Murmansk Region (
Lake Bolshoy Kharbey (67°34'42.3"N, 62°52'57.1"E; 67°35'7.7"N, 62°54'46.9"E; 67°34'3.5"N, 62°52'17.9"E; 67°33'45.9"N, 62°54'34.7"E; 67°32'48.3"N, 62°53'49.7"E), Lake L (67°35'46"N, 62°49'44.8"E); Lake K2 (67°32'55.7"N, 62°51'39.7"E), Lake K1 (67°36'22.1"N, 62°52'20.3"E; 67°36'17.6"N, 62°52'35"E); Lake Golovka (67°36'21.2"N, 62°56'6.6"E; 67°36'06"N, 62°55'28.6"E).
The species lives in silt, clay and sand (from the water edge up to 9.5 m in depth).
Lumbricus tubifex Müller, 1774
Cosmopolitan species excluding the tropic areas. In the Russian tundra: Murmansk Region (
Bolshoy Kharbey Lake (67°34'42.3"N, 62°52'57.1"E; 67°34'34.3"N, 62°52'17.4"E; 67°35'7.7"N, 62°54'46.9"E; 67°34'3.5"N, 62°52'17.9"E; 67°33'48.2"N, 62°55'2.6"E; 67°32'48.3"N, 62°53'49.7"E; 67°31'38"N, 62°53'2.8"E); Lake Golovka (67°36'06"N, 62°55'28.6"E; 67°35'50"N, 62°55'25.3"E; 67°36'21.2"N, 62°56'6.6"E); Lake D2 (67°35'52.8"N, 62°53'52.6"E); Lake K1 (67°36'22.1"N, 62°52'20.3"E; 67°36'17.6"N, 62°52'35"E); Lake K2 (67°32'56.1"N, 62°51'39.7"E); Lake L (67°35'41.5"N, 62°49'34.7"E; 67°35'46"N, 62°49'44.8"E); temporary pond (67°58'00"N, 62°34'60"E).
This is one of the numerous and widespread oligochaete species in the Kharbey lakes system. It was found on various substrates (from the water edge to 8.0 m in depth).
Peloscolex ringulatus Sokolskaja, 1961
Alexandrovia onegensis Hrabĕ, 1962
Palaearctic species inhabits Lakes of Karelia and Siberia. In tundra zone of Russia: Lake Ambarty and some other lakes in the Korotaikha River basin (
Lake K1 (67°36'17.6"N, 62°52'35"E); Lake Golovka (67°35'50"N, 62°55'25.3"E).
Single specimens were washed out from moss cover of sandy-silty substrates or submerged macrophytes.
Pachydrilus glandulosus Michaelsen, 1888
Chamaedrilus glandulosus (Michaelsen, 1888)
Holarctic species. In the Russian tundra: the Pechora River delta (
Temporary ponds of the Kharbey system (67°58'00"N, 62°34'60"E).
The worms were found in ponds that do not have an open water surface, in moss covering the swampy substrate.
Pachydrilus sphagnetorum Vejdovský, 1878
Chamaedrilus sphagnetorum (Vejdovský, 1878)
Previously it was registered only in Europe, eastern part of North America, and Greenland.
Temporary pond near Kharbey (67°58'00"N, 62°34'60"E).
The species inhabits pond, which does not have an open water surface, in the moss covering the swamped substrate.
Analycus armatus Levinsen, 1884
Holarctic species. In tundra zone of Russia: Murmansk Region (
Lake Bolshoy Kharbey (67°34'55.7"N, 62°57'44"E; 67°34'3.5"N, 62°52'17.9"E; 67°32'50"N, 62°52'26.3"E; 67°32'49.9"N, 62°53'40.1"E); Lake K1 (67°36'17.6"N, 62°52'35"E) temporary pond (67°58'00"N, 62°34'60"E).
The species was encountered mainly on sandy and sandy-gravel substrate with moss cover in the shore zone. Single specimens were found on the boggy parts of the small lake.
It was known only in the Karelia (NW Russia). In tundra zone of Russia: Lake Ambarty and some other lakes in the Korotaikha River basin (
Lake Golovka (67°36'21.2"N, 62°56'6.6"E).
Single specimens were found on silted gravel in shore zone of the lake.
Lumbricus variegatus Müller, 1774
Lumbriculus kareliensis Popchenko, 1976
Holarctic species. In tundra zone of Russia: Murmansk Region (
Lake Bolshoy Kharbey (67°34'N, 62°57'E; 67°34'34.3"N, 62°52'17.4"E; 67°34'3.5"N, 62°52'17.9"E; 67°32'44.2"N, 62°55'22.3"E; 67°32'50"N, 62°52'26.3"E; 67°31'38"N, 62°53'2.8"E); Lake D1 (67°36'2.2"N, 62°54'8.2"E; 67°35'52.8"N, 62°53'52.6"E); Lake L (67°35'41.5"N, 62°49'34.7"E); Lake K2 (67°32'40.9"N, 62°51'39.1"E); Lake Golovka (67°36'21.2"N, 62°56'6.6"E, 67°36'9.1"N, 62°55'50.6"E); temporary pond (67°58"N, 62°34'60"E).
The species was observed in most lakes of the area; L. variegatus often numerically dominated, inhabiting sands or silts between stones, submerged macrophytes, and stones with moss or algal covering (at depth up to 1 m).
Holarctic species. In tundra zone of Russia: Murmansk Region (
Lake Bolshoy Kharbey (67°34'34.3"N, 62°52'17.4"E; 67°35'27.5"N, 62°55'30.7"E); Lake Golovka (67°36'9.4"N, 62°56'39.9"E).
This species is in the area. It lives on stones with algal covering, silty or sandy substrates (depth up to 1.5 m).
Enterion tetraedra Savigny, 1826
Western part of the Palearctic Region. In tundra zone of Russia: the Pechora River delta (
Temporary pond (67°58'00"N, 62°34'60"E).
The species was found on a swampy substrate with moss cover.
Palaearctic region, namely Northern Eurasia. In the Russian tundra: the Vashutkiny lakes system (
Lake Bolshoy Kharbey (67°31'8"N, 62°53'2.8"E), temporary pond (67°58'00"N, 62°34'60"E).
Parasite of arctic salmonid fish. Within the area, A. peledina was observed on Coregonus lavaretus (Linnaeus, 1758) and Thymallus thymallus (Linnaeus, 1758).
Hirudo complanata Linnaeus, 1758
Glossiphonia tuberculate Johnson, 1816
Glossiphonia complanata Blanchard, 1894
Palaearctic region. Previously mentioned as Holarctic species. However, recent molecular studies confuted its findings in North America (
Small nameless lakes near Syattey-ty (67°33'46.2"N, 62°41'32.8"E; 67°33'11.6"N, 62°46'5.4"E; 67°33'13.6"N, 62°42'50.8"E; 67°32'27.9"N, 62°43'40.9"E); Lake D1 (67°36'2.2"N, 62°54'8.2"E; 67°35'52.8"N, 62°53'52.6"E).
This eurytopic species is numerically dominant in stagnant waters. Samples were collected from the shore; leeches were found in a free-living state on aquatic vegetation or on the underside of stones.
Clepsine verrucata Müller, 1844
Glossiphonia verrucata Johansson, 1909
Batracobdella verrucata Pawlowski, 1936
Boreobdella verrucata Lukin, 1956
Palearctic region. In tundra zone of Russia: Lukin reported this species as Boreobdella verrucata from Lake Plesovka in the Komi region (
No specimen in our collection.
The boreal species inhabits the North Eurasia (
Clepsine concolor Apathy, 1888
Glossiphonia concolor Livanow, 1903
Palearctic region. In tundra zone of Russia: the Usa River basin (
Temporary pond near the Lake Kharbey (67°58'00"N, 62°34'60"E), Lake Syattey-ty (67°33'13.6"N, 62°42'50.8"E) and small nameless lakes in its neighbourhood (67°33'46.2"N, 62°41'32.8"E; 67°33'11.6"N, 62°46'5.4"E; 67°32'56.7"N, 62°45'58.4"E).
This species is known as predator of small molluscs. The leeches were found on swamped places, as well as in small lakes with silted sand substrate.
Hirudo marginata O. F. Müller, 1774
Piscicola marginata Moquin-Tandon, 1827
Clepsine marginata F. Müller, 1844
Hemiclepsis marginata Harding, 1910
Palaearctic region. In tundra zone of Russia: the basin of the Usa (
The species was not found in the area.
This leech parasitises molluscs, amphibians, and fishes; H. marginata is seemingly very rare species in the Komi region.
Hirudo stagnalis Linnaeus 1758
Glossiphonia stagnalis Blanchard 1894
Glossiphonia (Helobdella) stagnalis Moore 1922
Bakedebdella gibbosa Sciacchitiano 1939
Cosmopolitan species. In tundra zone of Russia: lakes of Korotaikha River basin (
The species was not recorded in the Kharbey lakes. It was only found in an oxbow lake in the Pechora River delta (68°8'8.2"N, 53°36'33.8"E).
Sandy-clay sediment (depth 0.5 m).
Protoclepsis tesselata Livanow 1902
Holarctic species. In tundra zone of Russia: no data.
Small lakes near Syattey-ty (67°33'46.2"N, 62°41'32.8"E); temporary pond near Kharbey (67°58'00"N, 62°34'60"E).
The leeches were found in the moss cover of the substrate in two swamped lakes, which do not have an open water surface.
Clepsine maculosa Rathke, 1862
Clepsine maculosa Grube, 1871
Glossiphonia maculosa Vaillant, 1890
Protoclepsine sexoculata Moore, 1898
Protoclepsis meyeri Livanow, 1902
Protoclepsis garjaewi Livanow, 1902
Theromyzon sexoculata Johansson, 1909
Theromyzon maculosa Pawłowski 1936
Palearctic region. In tundra zone of Russia: it was reported as P. maculosum from Komi Republic region (
No specimen in our collection.
This leech normally lives in s a temperate or even relatively cold climate; prefers stagnant freshwater; it parasitises waterfowl, mainly ducks and geese.
Hirudo geometra Linnaeus, 1758
Transpalearctic species. In tundra zone of Russia: Kharbey lakes (
There are findings in Lake Sudorma (67°17'31.07"N, 50°16'25.58"E) situated in the neighbouring area to Bolshezemelskaya tundra.
Piscicola geometra is considered to be an oxyphilic species. It inhabits both rivers and stagnant water bodies with a favorable oxygen regime. This is an ectoparasite predominantly of cyprinids, with no obvious host preference. A single specimen was sampled from the dorsal fin of a whitefish.
Very small leech, its body length is 7 mm and diameter is 1.5 mm. Pigmentation is uniform, does not form a specific pattern on the dorsal side of the body, unlike the widespread P. geometra.
Lake Golovka (67°35'50"N, 62°55'25.3"E).
A single specimen was found on the dorsal fin of a whitefish.
Caliobdella mammilata Nesemann, 1994
Palaearctic region. In tundra zone of Russia: northern part of Western Siberia (
No specimen in our collection from the Kharbey area.
A specific parasite of burbot.
Hirudo octoculata Linnaeus, 1758
Herpobdella octoculata Johansson 1910
Herpobdella octomaculata Pawlowski 1935
Palaearctic and Nearctic regions. In tundra zone of Russia: Kharbey lakes and other lakes of the Bolshezemelskaya tundra (
No specimen in our collection from the Kharbey area. Earlier records were probably misidentified Erpobdella sp. 1 (see below).
This leech inhabits various types of water bodies; it is considered the most numerous Erpoddella in most Palearctic freshwater bodies. These leeches avoid of humic substances, and practically do not occur in distrophic waters. However, E. octoculata can inhabit highly polluted water bodies.
Nephelis octoculata var. monostriata Lindenfeld & Pietruszynski, 1890
Erpobdella vilnensis (Liskiewitz, 1925) in part
Widespread in the Palaearctic region and occurs from the Netherland (
Lake Bolshoy Kharbey (67°32'48.3"N, 62°53'49.7"E; 67°34'34.3"N; 62°52'17.4"E), Lake D1 (67°36'2.2"N, 62°54'8.2"E; 67°35'52.8"N, 62°53'52.6"E).
The species was found in Arctophila thickets in a small body of water, and in silt of Lake Kharbey.
Nephelis testacea f. nigricollis Brandes, 1900
Herpobdella testacea var. nigricollis Johansson, 1929
Palaearctic region. The E. nigricollis geographic range is in the northern part of Eurasia with the Yenisei River as the eastern border. In the tundra zone of Russia, according to
There is no specimen in our collection from the Kharbey area.
According to
Nephelis testacea Savigny, 1822
Herpobdella testacea Blanchard, 1894
Palaearctic region. In tundra zone of Russia: northern part of Western Siberia (
There is no specimen in our collection from the Kharbey area.
This species is rare or absent in the northwestern part of Russia. Usually, it inhabits stagnant waters.
All specimens had dark dorsal pigmentation with clearly defined two paramedian stripes and three annuli between sexual pores. This combination of morphological and anatomical features has not been found in any known species.
A small nameless lake near Syattey-ty (67°33'46.2"N, 62°41'32.8"E).
Multiple specimens were found in silt among Arcticophila thickets.
Hirudo sanguisuga Linnaeus, 1758
Haemopis sanguisuga Blanchard, 1894
Transpalearctic species. Widespread in all Europe and Asia up to Far East. In tundra zone on Russia: Lukin describes them as characteristic for Northern Eurasia (1976) and specifically for Komi Republic water bodies (1957).
There is no specimen in our collection from the Kharbey area.
This so called "large false horse leech" is a predator and lives mainly in shallow ponds, occasionally in temporary ponds where sediments remain wet; it is found only in the shore zone.
Authors are thankful to Elena Fefilova for her help in fieldwork organisation, and Natalia Sorokovikova and Nadezhda Bolbat for their comments on identification of some leech samples. We greatly appreciate the reviews by Tarmo Timm and Steven Fend, as well as their contributions to linguistic corrections of the manuscript text.
This study was carried out within the framework of State Task of the Institute of Biology, Komi Scientific Center, Ural Branch of Russian Academy of Sciences, no. 0414-2018-0005 (AAAA-A17-117112850235-2) and State Task of the Limnological Institute, Siberian Branch of Russian Academy of Sciences, no. 0345-2019-0002 (AAAA-A19-116122110066-1), as well as with financial support from Russian Foundation for Basic Research (RFBR), grant no. 18-54-00009 and Joint program of RFBR and Komi, grant no.18-44-110017.