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The species composition and distribution of free-living nematodes (Nematoda) in an area of natural oil and gas seeps in Lake Baikal

  • Aquatic Flora and Fauna
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Abstract

The species composition and quantitative parameters of free-living nematode fauna have been studied in an area of natural oil seeps off Cape Gorevoi Utes (Middle Baikal). A total of 34 species of 17 genera, 10 families, and 8 orders have been found, 18 of them endemic to Lake Baikal. The nematode fauna of bitumen volcanoes was found to be represented by three specialized species (Monhystera naphthera Gagarin et Naumova, 2010; Eumonhystera abyssalis Gagarin et Naumova, 2010; and Eutobrilus mirandus Gagarin et Naumova, 2011). Areas of the bottom with scattered oil seeps are dominated by eurybathic species endemic to Lake Baikal. The maximal values of nematode population density and maximum proportion of nematodes in the meiozoobenthos were recorded in areas directly adjacent to oil seeps.

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Correspondence to V. G. Gagarin.

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Original Russian Text © T.V. Naumova, T.Ya. Sitnikova, V.G. Gagarin, 2012, published in Biologiya Vnutrennikh Vod, No. 2, 2012, pp. 3–11.

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Naumova, T.V., Sitnikova, T.Y. & Gagarin, V.G. The species composition and distribution of free-living nematodes (Nematoda) in an area of natural oil and gas seeps in Lake Baikal. Inland Water Biol 5, 161–168 (2012). https://doi.org/10.1134/S1995082912020113

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  • DOI: https://doi.org/10.1134/S1995082912020113

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