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Type: Article
Published: 2016-04-07
Page range: 582–592
Abstract views: 56
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Ethmolaimus riparius sp. n. and Paramononchus major sp. n. (Nematoda) from Lake Baikal, Russia

Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, 152742, Yaroslavl Province, Russia.
Limnological Institute, Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russia.
Nematoda free-living freshwater nematodes Lake Baikal new species taxonomy

Abstract

Two new nematode species found in Lake Baikal (Russia) are described and illustrated. Ethmolaimus riparius sp. n. is morphologically close to E. pilosus Shoshin, 1998 and E. lanatus Shoshin, 1998. The new species differs from E. pilosus by the longer and thinner body (L = 1228–1501 µm, a = 26–34 vs L = 720–1070 µm, a = 19–23), larger stoma (26–32 µm long vs 19–24 µm long), longer spicules and gubernaculum (45–50 µm long and 21–25 µm long vs accordingly 32–37 µm long and 8 µm long). E. riparius sp. n. differs from E. lanatus by the longer body (L = 1228–1501 µm vs L = 680–1180), shorter cephalic setae (its length is equal 1.1–1.4 labial region diameter vs 1.6–2.1 labial region diameter) and longer spicules and gubernaculum (45–50 µm long and 21–25 µm long vs accordingly 25–30 µm long and 7–8 µm long). Paramononchus major sp. n is close to P. orientalis Gagarin & Naumova, 2012, but differs from it by the longer body (L = 5926–7820 µm vs L = 3081–3778 µm), longer spicules (410–475 µm long vs 208–238 µm long) and larger number of precloacal supplements (52–61 vs 21–24). Keys for the identification of valid species of the genera Ethmolaimus and Paramononchus are given.

 

References

  1. Alekseev, V.M., Naumova, A.D. & Dymina, E.V. (1979) Description of two new species of the genus Ethmolaimus (Nematoda, Chromadoridae). Zoologicheskii Zhurnal, 58, 598−602. [in Russian]

    Andrássy, I. (2005) Free-living nematodes of Hungary (Nematoda errantia). Hungarian Natural History Museum and Systematic Zoology Reseach Group of the Hungarian Academy of Sciences, Budapest, 519 pp.

    Boxshall, G.A., Mees, J., Costello, M.J., Hernandez, F., Bailly, N., Boury-Esnault, N., Gofas, S., Horton, T., Klautau, M., Kroh, A., Paulay, G., Poore, G., Stöhr, S., Decock, W., Dekeyzer, S., Vandepitte, L., Vanhoorne, B., Adams, M.J., Adlard, R., Adriaens, P., Agatha, S., Ahn, K.J., Ahyong, S., Alvarez, B., Anderson, G., Angel, M., Arango, C., Artois, T., Atkinson, S., Barber, A., Bartsch, I., Bellan-Santini, D., Berta, A., Bieler, R., Błażewicz-Paszkowycz, M., Bock, P., Böttger-Schnack, R., Bouchet, P., Boyko, C.B., Brandão, S.N., Bray, R., Bruce, N.L., Cairns, S., Campinas Bezerra, T.N., Cárdenas, P., Carstens, E., Catalano, S., Cedhagen, T., Chan, B.K., Chan, T.Y., Cheng, L., Churchill, M., Coleman, C.O., Collins, A.G., Crandall, K.A., Cribb, T., Dahdouh-Guebas, F., Daly, M., Daneliya, M., Dauvin, J.C., Davie, P., De Grave, S., Defaye, D., d'Hondt, J.L., Dijkstra, H., Dohrmann, M., Dolan, J., Eitel, M., Encarnação, S.C.d., Epler, J., Faber, M., Feist, S., Fišer, C., Fonseca, G., Fordyce, E., Foster, W., Frank, J.H., Fransen, C., Furuya, H., Galea, H., Gasca, R., Gaviria-Melo, S., Gerken, S., Gheerardyn, H., Gibson, D., Gil, J., Gittenberger, A., Glasby, C., Glover, A., González Solís, D., Gordon, D., Grabowski, M., Guerra-García, J.M.., Guidetti, R., Guilini, K., Guiry, M.D., Hajdu, E., Hallermann, J., Hayward, B., Hendrycks, E., Ho, J.s., Høeg, J., Holovachov, O., Holsinger, J., Hooper, J., Hughes, L., Hummon, W., Iseto, T., Ivanenko, S., Iwataki, M., Janussen, D., Jarms, G., Jaume, D., Jazdzewski, K., Just, J., Kamaltynov, R.M., Kaminski, M., Karanovic, I., Kim, Y.H., King, R., Kirk, P.M., Kolb, J., Kotov, A., Krapp-Schickel, T., Kremenetskaia, A., Kristensen, R., Lambert, G., Lazarus, D., LeCroy, S., Leduc, D., Lefkowitz, E.J., Lemaitre, R., Lörz, A.N., Lowry, J., Lundholm, N., Macpherson, E., Madin, L., Mah, C., Mamos, T.; Manconi, R., Mapstone, G., Marshall, B., Marshall, D.J., McInnes, S., Meland, K., Merrin, K., Messing, C., Miljutin, D., Mills, C., Mokievsky, V., Molodtsova, T., Monniot, F., Mooi, R., Morandini, A.C., Moreira da Rocha, R., Moretzsohn, F., Mortelmans, J., Mortimer, J., Neubauer, T.A., Neuhaus, B., Ng, P.; Nielsen, C., Nishikawa, T., Norenburg, J., O'Hara, T., Opresko, D., Osawa, M., Ota, Y., Parker, A., Patterson, D., Paxton, H., Perrier, V., Perrin, W., Pilger, J.F., Pisera, A., Polhemus, D., Pugh, P., Reimer, J.D., Reuscher, M., Rius, M., Rosenberg, G., Rützler, K., Rzhavsky, A., Saiz-Salinas, J., Santos, S., Sartori, A.F., Satoh, A., Schatz, H., Schierwater, B., Schmidt-Rhaesa, A., Schneider, S., Schönberg, C., Schuchert, P., Self-Sullivan, C., Senna, A.R., Serejo, C., Shamsi, S., Sharma, J., Shenkar, N., Siegel, V., Sinniger, F., Sivell, D., Sket, B., Smit, H., Smol, N., Stampar, S.N., Sterrer, W., Stienen, E., Strand, M., Suárez-Morales, E., Summers, M., Suttle, C., Swalla, B.J., Tabachnick, K.R., Taiti, S., Tandberg, A.H., Tang, D., Tasker, M., Tchesunov, A., ten Hove, H., ter Poorten, J.J., Thomas, J., Thuesen, E.V., Thurston, M., Thuy, B., Timi, J.T., Timm, T., Todaro, A., Turon, X., Tyler, S., Uetz, P., Utevsky, S., Vacelet, J., Vader, W., Väinölä, R., van der Meij, S.E., van Ofwegen, L., van Soest, R., Van Syoc, R., Vonk, R., Vos, C., Walker-Smith, G., Walter, T.C., Watling, L., Whipps, C., White, K., Williams, G., Wyatt, N., Wylezich, C., Yasuhara, M., Zanol, J. & Zeidler, W. (2016) World Register of Marine Species. Available from: http://www.marinespecies.org at VLIZ/ (accessed 25 February 2016)

    Chitwood, B.G. (1937) A revised classification of the Nematoda. In: Raboty po gelmintologii (Works no the gelmintology). The collection devoted to the academician K.I. Scriabin. Publishing Academy of Sciences of the USSR, Moskow, pp. 660–695.

    Decraemer, W. & Smal, N. (2005) Orders Chromadorida, Desmodorida and Desmoscolecida. In: Eyualem, A., Andrassy, I. & Tranpuger, W. (Eds.), Freshwater nematodes: Ecology and taxonomy. CABI Publishing, Walingford, pp. 497–752.

    Eyualem-Abebe & Coomans, A. (1996) Aquatic nematodes from Ethiopia V: Descriptions of Achromadora inflata n. sp., Ethmolaimus zullinii n.sp. and Prodesmodora nurta Zullini, 1988 (Chromadorida: Nematoda). Hydrobiologia, 332 (1), 27–39.

    http://dx.doi.org/10.1007/BF00020778

    Gagarin, V.G. & Naumova, T.V. (2010) Three new species of free-living nematodes from Lake Baikal, Russia. International Journal of Nematology, 20, 141–149.

    Gagarin, V.G. & Naumova, T.V. (2012a) Two new species of Theristus Bastian, 1865 (Nematoda: Xyalidae) from interstitial zone of Lake Baikal, Siberia, Russia. Nematology, 14 (4), 499–508.

    http://dx.doi.org/10.1163/156854111X612225

    Gagarin, V.G. & Naumova, T.V. (2012b) Free-living nematodes (Nematoda) fauna from the Interstitial of the Lake Baikal splash zone. Inland Water Biology, 5 (No. 3), 229–235.
    http://dx.doi.org/10.1134/S1995082912030030

    Gagarin, V.G. & Naumova, T.V. (2012c) Paramononchus orientalis sp. n. and Ethmolaimus maximus sp. n. (Nematoda) from Lake Baikal, Russia. Zootaxa, 3513, 51–60.

    Gerlach, S.A. (1956) Die Nematodenbesiedlung des tropischen Brandyngsstrandes von Pernambuco In: Brasilianische Meeres-Nematoden II. Kieler Meeresforsch, 12 (2), 202–218.

    Jairajpuri, M.S. (1969) Studies on Mononchia of India. I. The genera Hadronchus, Iotonchus and Miconchus and a revised classification of Mononchida, new order. Nematologica, 15, 557–581.

    Jensen, P. (1994) Revision of Ethmolaiminae Filipjev & Stekhoven, 1941 (Nematoda: Chromadorida) with descriptions of one new genus and three new species. Hydrobiologia, 286, 1–15.

    de Man, J.G. (1880) Die einhelmischen, frei in der reinen Erde und im süssen Wasser lebende Nematoden monographisch bearbeitet. Vorläufiger Bericht und descriptiv-systematischer Teil. Tijdschrift der nederlandische dierkundige Vereeniging, 5, 1–104.

    Mulvey, R.H. (1978) Predaceous nematodes of the family Mononchidae from the Mackenzie and Porcupine river systems and Somerset Island. N.W.T., Canada. Canadian Journal of Zoology, 56, 1847–1868.

    Pax, F. & Soós, A. (1943) Die Nematoden der deutschen Schwefelquellen und Thermen. Archiv für Hydrobiologie, 40, 123–183.

    Sheveleva, N.G., Proviz, V.I., Lukhnev, A.G., Naumova, T.V., Popova, O.V., Poberezhnaya, A.E. & Timoshkin, O.A. (2013) Biology of the coastal zone of Lake Baikal. Part 4. Taxonomic diversity of the bentic fauna in the splash zone of Lake Baikal (in the vicinity of Berezovy Cape—Bolshie Koty Bay. Izvestia Irkutskogo Gosudarstvennogo Universiteta. Seriya «Biologiya. Ekologiya» (The Bulletin of Irkutsk State University. Series «Biology. Ecology»), 6 (No. 2), 132–143. [in Russian]

    Shoshin, A.V. (1998) Baikal nematodes of the genus Ethmolaimus (Nematoda: Chromadorida: Ethmolaimidae). Zoosystematica Rossica, 7, 215–221.

    Tchesunov, A. (2014) Order Chromadorida Chitwood, 1933. In: Schmidt-Rhaesa, A. (Ed.), Handbook of Zoology. Gastrotricha, Cycloneuralia, Gnathifera. Vol. 2. Nematoda. Chapter: 7.12. De Gruyter, Berlin, pp. 373–398.

    Tsalolikhin, S. Ya. (1990) On the fauna of freshwater mononchids (Nematoda, Mononchida) of Holarctic. Works of Inland Water Biology Institute (Academy of Sciences of the USSR), 64 (67), 54–58 [in Russian]

    Vanaverbeke, J., Bezerra, T.N., Braeckman, U., De Groote, A., De Meester, N., Deprez, T., Derycke, S., Gilarte, P., Guilini, K., Hauquier, F., Lins, L., Maria, T., Moens, T., Pape, E., Smol, N., Taheri, M., Van Campenhout, J., Vanreusel, A., Wu, X. & Vincx, M. (2016) NeMys: World Database of Free-Living Marine Nematodes. Available from: http://nemys.ugent.be/ (accessed 25 February 2016)