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Issue: Vol. 5369 No. 2: 9 Nov. 2023
Type: Article
Published: 2023-11-09
DOI: 10.11646/zootaxa.5369.2.5
Page range: 255-268
Abstract views: 136
PDF downloaded: 11

Two new species of Xyalidae Chitwood, 1951 (Nematoda, Monhysterida) from Chinese Sea Area

College of Life Sciences; Liaocheng University; Liaocheng 252059; P. R. China
College of Life Sciences; Liaocheng University; Liaocheng 252059; P. R. China
College of Life Sciences; Liaocheng University; Liaocheng 252059; P. R. China
Nematoda Daptonema sinica sp. nov. Metadesmolaimus bulbosus sp. nov. biodiversity free-living marine nematode taxonomy

Abstract

Two new nematode species of the family Xyalidae were found in the intertidal zone of the Chinese coast, and they are described here as Daptonema sinica sp. nov. and Metadesmolaimus bulbosus sp. nov. Daptonema sinica sp. nov. is characterised by a relatively large body with a broad funnel-shaped buccal cavity; relatively long cephalic setae; a circular amphidial fovea posterior to the buccal cavity; slender spicules bending into a hook shape in the posterior half; a small plate-like gubernaculum without apophysis; and a conico-cylindrical slender tail with terminal setae. Metadesmolaimus bulbosus sp. nov. can be identified by its large buccal cavity, long cervical setae, multiple bulb-like pharyngeal muscular swellings, conico-cylindrical tail narrowing abruptly immediately posterior to the cloaca, straight clavated spicules with a broad proximal end and hooked distal end, and gubernaculum absent. An updated dichotomous key to the species of Metadesmolaimus is given.

 

References

  1. Allgén, C.A. (1935) Die freilebenden Nematoden des Öresunds. Capita Zoologica, 6 (3), 1–192.
  2. Aryuthaka, C. & Kito, K. (2012) Two new species of the genus Daptonema Cobb, 1920 (Nematoda: Xyalidae) found in the monospecific Halophila ovalis patches within an intertidal mixed-species seagrass bed on the coast of the Andaman Sea, Thailand. Zootaxa, 3350 (1), 34–46. https://doi.org/10.11646/zootaxa.3350.1.2
  3. Boucher, G. & Helléouët, M.N. (1977) Nématodes des sables fins infralittoraux de la Pierre Noire (Manche occidentale). III. Araeolaimida et Monhysterida. Bulletin du Muséum National d’ Histoire Naturelle, 427, 85–122.
  4. Chitwood, B.G. (1951) North American marine nematodes. Texas Journal of Science, 3, 627–672.
  5. Cobb, N.A. (1920) One hundred new nemas (type species of 100 new genera). Contributions to A Science of Nematology, 1, 217–343.
  6. de Jonge, V.N. & Bouwman, L.A. (1977) A simple density separation technique for quantitative isolation of meiobenthos using the colloidal silica Ludox-TM. Marine Biology, 42, 143–148. https://doi.org/10.1007/BF00391564
  7. de Man, J.G. (1888) Sur quelques nématodes libres de la mer du Nord, nouveaux ou peu connus. Mémoires de la Société Zoologique de France, 1, 1–51.
  8. de Man, J.G. (1890) Quatrième note sur les nématodes libres de la mer du Nord et de la Manche. Mémoires de la Société Zoologique de France, 3, 169–194.
  9. Filipjev, I.N. (1922) Sur les Nématodes libres de la Mer d’Azov [On Free Nematodes of the Sea of Azov; O svobodnykh nematodakh Azovskogo Moria]. Trudy Stavropol’skogo Sel’ skokhozyaistvennogo Instituta, 1 (Zoologia), 17, 185–208.
  10. Filipjev, I.N. (1929) Classification of freeliving Nematoda and relations to parasitic forms. Journal of Parasitology Urbana,15, 281–282.
  11. Fonseca, G. & Bezerra, T.N. (2014) Order Monhysterida Filipjev, 1929. In: Schmidt-Rhaesa, A. (Ed.), Handbook of Zoology, Gastrotricha, Cycloneuralia and Gnathifera. Vol. 2. Nematoda. De Gruyter, Berlin/Boston, pp. 435–465. https://doi.org/10.1515/9783110274257.435
  12. Gagarin, V.G. (2013) Two new species of the genus Metadesmolaimus Schuurmans Stekhoven, 1935 (Nematoda, Monhysterida) from Goast of Vietnam. International Journal of Nematology, 23, 119–128.
  13. Gerlach, S.A. (1953) Die Nematodenbesiedlung des Sandstrandes und des Küstengrundwassers an der italienischen Küste I. Systematischer Teil. Archivio Zoologico Italiano, 37, 517–640.
  14. Gerlach, S.A. (1956) Diagnosen neuer Nematoden aus der Kieler Bucht. Kieler Meeresforsch, 12, 85–109.
  15. Gerlach, S.A. (1959) Neue Meeres-Nematoden aus dem Supralitoral der deutschen Küsten. Internationale Revue der Gesamten Hydrobiologie, 44, 463–467. https://doi.org/10.1002/iroh.19590440125
  16. Gerlach, S.A. & Riemann, F. (1973) The Bremerhaven Checklist of Aquatic Nematodes. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven, Supplement 4 (1), 1–404.
  17. Guo, Y.Q., Chen, Y.Z. & Liu, M.D. (2016) Metadesmolaimus zhanggi sp. nov. (Nematoda: Xyalidae) from East China Sea, with a pictorial key to Metadesmolaimus species. Cahiers de Biologie Marine, 57, 73–79.
  18. Gusakov, V.A., Gagarin, V.G. & Dinh, C.N. (2023) Daptonema brzeskii sp. n. and D. rivale sp. n. (Nematoda, Monhysterida, Xyalidae) from Mekong River Mouth, Vietnam. Inland Water Biology, 16, 404–412. https://doi.org/10.1134/s1995082923030094
  19. Huang, Y.; Zhang, Z. (2010) Two new species of Xyalidae (Nematoda) from the Yellow Sea, China. Journal of the Marine Biological Association of the United Kingdom, 90 (2), 391–397. https://doi.org/10.1017/s0025315409000794
  20. Huang, M., Sun, J. & Huang, Y. (2019) Daptonema parabreviseta sp. nov. (Xyalidae, Nematoda) from the Jiaozhou Bay of the Yellow Sea, China. Journal of Oceanology and Limnology, 37 (1), 273–277. https://doi.org/10.1007/s00343-019-7362-3
  21. Juario, J.V. (1974) Neue freilebende Nematoden aus dem Sublitoral der Deutschen Bucht Veroffentlichungen des Instituts fuer Meeresforschung in Bremerhaven, 14, 275–303.
  22. Leduc, D. (2015) One new genus and five new nematode species (Monhysterida, Xyalidae) from Tonga and Kermadec Trenches, Southwest Pacific. Zootaxa, 3964 (5), 501–525. https://doi.org/10.11646/zootaxa.4039.3.6
  23. Lorenzen, S. (1971) Die Nematodenfauna im Verklappungsgebiet für Industrieabwässer nordwestlich von Helgoland: I. Araeolaimida und Monhysterida. Zoologischer Anzeiger, 187, 223–248.
  24. Lorenzen, S. (1973) Freilebende Meersenematoden aus dem Sublitoral der Nordsee und der Kieler Bucht. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven, 14, 103–130.
  25. Lorenzen, S. (1977) Revision der Xyalidae (freilebende Nematoden) auf der Grundlage einer kritischen Analyse von 56 Arten aus Nord- und Ostsee. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven, 16, 197–261.
  26. McIntyre, A.D. & Warwick, R.M. (1984) Meiofauna techniques. In: Holme, N.A. & McIntyre, A.D. (Eds.), Methods for the study of marine benthos. Blackwell Scientific Publications, Oxford, pp. 217–244.
  27. Nemys (Eds.) (2023) Nemys: World Database of Nematodes. Available from: https://nemys.ugent.be (accessed 10 May 2023) https://doi.org/10.14284/366
  28. Nguyen, V.T. & Gagarin, V.G. (2009) Three species of monhysterids (Nematoda, Monhysterida) from mangrove forest of the Me Kong river estuary, Vietnam. Vietnam Journal of Biology, 31 (2), 8–15. https://doi.org/10.15625/0866-7160/v31n2.808
  29. Pastor de Ward, C.T. (1985) Nematodes de la Ria Deseado (Monhysteroidea, Xyalidae), Santa Cruz, Argentina. II. Physis, Seccion A, 43 (105), 113–130.
  30. Platt, H.M. (1983) New species of Metadesmolaimus and Stephanolaimus (Nematoda: Chromadoria) from Northern Ireland with reviews of the genera. Zoological Journal of the Linnean Society, 78, 363–373. https://doi.org/10.1111/j.1096-3642.1975.tb02265.x
  31. Qiao, C.Y. & Huang, Y. (2020) Description of Daptonema brevicaudatus sp. nov. (Nematoda: Xyalidae) from the South China Sea. Cahiers de Biologie Marine, 61, 469–475. https://doi.org/10.21411/CBM.A.46D03D27
  32. Sсhuurmans Stеkhovеn, J.H. (1935) Additional notеs to mу monographs оn thе frееliving marinе Nemas of thе Bеlgian Coast. I. and II. Mémoirеs du Мuséе Roуаl d’Histoire Nаturеllе dе Belgiquе, 72, 1–36.
  33. Schuurmans Stekhoven, J.H (1950) The freeliving marine nemas of the Mediterranean: I. The Bay of Villefranche. Institut Royal des Sciences Naturelles de Belgique: Bruxelles, 2 (37), 1–220.
  34. Sun, Y., Huang, Y., Tang, H., Zang, Y., Xiao, H. & Tang, X.X. (2019) Two new free-living nematode species of the family Xyalidae from the Laizhou Bay of the Bohai Sea, China. Zootaxa, 4614 (2), 383–394. https://doi.org/10.11646/zootaxa.4614.2.7
  35. Tchesunov, A.V. (1980) New Data on Free-Living Nematodes of the Superfamily Monhysteroidea of the Caspian Sea. Zoologischeskii Zhurnal, 59 (7), 973–985.
  36. Tchesunov, A.V. (1990) Long-hairy Xyalidae (Nematoda, Chromadoria, Monhysterida) in the White Sea; New Species, New Combinations, and the Status of the Genus Trichotheristus). Zoologicheskii Zhurnal, 69 (10), 5–19.
  37. Tchesunov, A.V. & Miljutin, D.M. (2006) Three new free-living nematode species (Monhysterida) from the Arctic abyss, with revision of the genus Eleutherolaimus Filipjev, 1922 (Linhomoeidae). Russian Journal of Nematology, 14 (1), 57–75.
  38. Venekey, V., Gheller, P.F., Maria, T.F., Brustolin, M.C., Kandratavicius, N., Vieira, D.C., Brito, S., Souza, G.S. & Fonseca, G. (2014) The state of the art of Xyalidae (Nematoda, Monhysterida) with reference to the Brazilian records. Marine Biodiversity, 44, 367−390. https://doi.org/10.1007/s12526-014-0226-3
  39. Wang, C.M., AN, L.G & Huang, Y. (2018) Two new species of Xyalidae (Monhysterida, Nematoda) from the East China Sea. Zootaxa, 4514 (4), 583–592. https://doi.org/10.11646/zootaxa.4514.4.11
  40. Warwick, R.M. & Platt, H.M. (1973) New and little known marine nematodes from a Scottish sandy beach. Cahiers de Biologie Marine, 14, 135–158.
  41. Warwick, R.M., Platt, H.M. & Somerfield, P.J. (1998) Free-living marine nematodes. part Ⅲ Monhysterids: pictorial key to world genera and notes for identification of British species. Synopses of the British Fauna. No. 53. Field Studies Council, Shrewsbury, 296 pp.
  42. Wieser, W. (1956) Free-living marine nematodes III. Axonolaimoidea and Mohysteroidea. Lunds Universitets Årsskrift, 52 (13), 1–115.
  43. Wieser, W. & Hopper, B. (1967) Marine nematodes of the east coast of North America. I. Florida. Bulletiin Museum comparative Zoology, 135, 239–344.