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Hofmaenneria baikalensis sp. n. and Paratrilobus longisomus sp. n. (Nematoda) from Lake Baikal

  • BIOLOGY, MORPHOLOGY, AND SYSTEMATICS OF HYDROBIONTS
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Abstract

An illustrated description for two species of free-living nematodes found in Lake Baikal and new to science: Hofmaenneria baikalensis sp. n. and Paratrilobus longisomus sp. n. is provided. The first species is very close to Hofmaenneria keoladeoensis Khan et al., 2005; H. niddensis (Skwarra, 1921) Schneider, 1940; and H. sitnikovae Gagarin, Naumova, 2010, but differs from these three species by the presence of crystalloids in the body cavity and three oval cardiac glands. Paratrilobus longisomus sp. n. is similar to P. expugnator (Tsalolikhin, 1976) and P. rapis Gagarin, 1991 in regards to body size, but differs from them in a relatively shorter and less slender tail and the presence of a subterminal seta at the tip of the tail.

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ACKNOWLEDGMENTS

We thank V.A. Gusakov (Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences) for help in photographing the specimens.

Funding

This work was carried out as part of State Task themes no. 121032300180-7 and 121051100109-1.

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Authors and Affiliations

  1. Limnological Institute, Siberian Branch, Russian Academy of Sciences, Irkutsk, Russia

    T. V. Naumova

  2. Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Nekouzskii raion, Borok, Yaroslavl oblast, Russia

    V. G. Gagarin

Authors
  1. T. V. Naumova
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  2. V. G. Gagarin
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Corresponding authors

Correspondence to T. V. Naumova or V. G. Gagarin.

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Conflict of interest. The authors declare that they have no conflicts of interest.

Statement on the welfare of animals. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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Translated by D. Martynova

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Naumova, T.V., Gagarin, V.G. Hofmaenneria baikalensis sp. n. and Paratrilobus longisomus sp. n. (Nematoda) from Lake Baikal. Inland Water Biol 16, 607–614 (2023). https://doi.org/10.1134/S1995082923040132

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  • DOI: https://doi.org/10.1134/S1995082923040132

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