Abstract
In the seven nests of the Lapland Bunting ( Calcarius lapponicus ) collected from the Arctic island of Vaygach, 1348 oribatid mite specimens representing 25 species, 24 genera of 21 families were found. Nine species were found for the first time on this island: Atropacarus striculus (Koch, 1835), Phthiracarus ligneus Willmann, 1931, Eueremaeus oblongus oblongus (Koch, 1835), Gustavia microcephala (Nicolet, 1855), Carabodes areolatus Berlese, 1916, Banksinoma lanceolata (Michael, 1885), Scutovertex minutus (Koch, 1836), Scheloribates laevigatus (Koch, 1835), Trichoribates berlesei (Jacot, 1929). Representatives of seven of these genera: Atropacarus, Eueremaeus, Gustavia, Banksinoma, Scutovertex, Scheloribates, Trichoribates , as well as genera Nothrus and Achipteria , also six families, viz. Nothridae Berlese, 1896; Eremaeidae Sellnick, 1928; Gustaviidae Oudemans, 1900; Thyrisomidae Grandjean, 1953; Scutoverticidae Grandjean, 1954; Scheloribatidae Jacot, 1935, are reported for the island for the first time. The taxonomic list of oribatid mites of Vaygach Island, compiled based on both new data and the available literature, includes 43 species, 34 genera and 25 families. The fauna is mostly composed of Holarctic species (71.0 %), with a significant proportion of Circumpolar species (47.4 %) in it. Species with a polyzonal latitudinal distribution predominate in numbers. The share of Arcto-Boreal species is low; no Arctic species were found. The faunal composition of oribatid mites of Vaygach Island demonstrated a high degree of similarity with the insular fauna of the European sector of the Arctic, as well as with the fauna of continental tundra. The nests of the Lapland Bunting contained four so-called 'southern' species, whose core distribution range is situated at lower latitudes: Phthiracarus ligneus, Eueremaeus oblongus oblongus, Gustavia microcephala, Banksinoma lanceolata.
Highlights
Nine species were found for the first time on this island: Atropacarus striculus (Koch, 1835), Phthiracarus ligneus Willmann, 1931, Eueremaeus oblongus oblongus (Koch, 1835), Gustavia microcephala (Nicolet, 1855), Carabodes areolatus Berlese, 1916, Banksinoma lanceolata (Michael, 1885), Scutovertex minutus (Koch, 1836), Scheloribates laevigatus (Koch, 1835), Trichoribates berlesei (Jacot, 1929)
The fauna is mostly composed of Holarctic species (71.0 %), with a significant proportion of Circumpolar species (47.4 %) in it
The faunal composition of oribatid mites of Vaygach Island demonstrated a high degree of similarity with the insular fauna of the European sector of the Arctic, as well as with the fauna of continental tundra
Summary
Остров Вайгач расположен в европейском секторе Арктики, между Карским и Баренцевым морем, у северных берегов России. Северная и центральная части острова более приподняты, на юге отметки редко превышают 50 м. Большая часть территории относится к подзоне арктических тундр, а южная его око-. Климат влажный; максимум осадков приходится на сентябрьоктябрь, минимум – на март-апрель [Алейников и др., 2014]. Гнездовой ареал лапландского подорожника охватывает тундры Европы, Азии и Северной Америки, а также острова ЯнМайен, Колгуев, Вайгач, Новая Земля, Земля Франца-Иосифа, Новосибирские, Врангеля [Дементьев, Гладков, 1954]. Основные гнездовые биотопы на северо-западе острова – осоково-моховолишайниковые и ивнячково-осоково-моховые тундры, а также плоскобугристые торфяники и вогнутые полигональные болота [Алейников и др., 2014]. Гнездо имеет наружный диаметр 70–130 мм, внутренний диаметр 50–70 мм; глубина лотка 50–60 мм [Дементьев, Гладков, 1954]. Сборы проведены в северной части острова в точках Болванская гора
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