Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-16T14:47:01.810Z Has data issue: false hasContentIssue false
  • English
  • Français

Two new oxystominid species (Nematoda: Enoplida) from an abyssal plain in the southern Philippine Sea

Published online by Cambridge University Press:  10 February 2017

Tingting Yu  and
Kuidong Xu
Tingting Yu
Affiliation:
Department of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Kuidong Xu*
Affiliation:
Department of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China University of Chinese Academy of Sciences, Beijing 100049, China Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
*
Correspondence should be addressed to: K. Xu Department of Marine Organism Taxonomy and Phylogeny, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China Email: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

Two new species of free-living marine nematodes, Litinium dispariseta sp. nov. and Wieseria minor sp. nov. are described from an abyssal plain with a water depth of 4117–5035 m near the Southern Kyushu-Palau Ridge in the tropical Western Pacific Ocean. Litinium dispariseta sp. nov. is characterized by having distinct inner labial setae two times longer than the outer labial setae, wrench-like amphideal foveas, a single preanal midventral supplementary seta and a short cylindrical tail with bluntly rounded tip. It differs from congeners by its distinctly long inner labial setae relative to the outer labial setae (two times longer vs shorter or equal in length) and peculiar wrench-like amphideal foveas (vs horseshoe shaped or ovoid with round to oval anterior aperture). Wieseria minor sp. nov. has a clavate tail, a character found only in the four congeners W. glandulosa (Kreis, 1929), W. longiseta (Allgén, 1947), W. clavata Gerlach, 1956 and W. inaequalis Gerlach, 1956. However, Wieseria minor sp. nov. differs from these congeners by its much smaller body size (1045 µm vs 2120–3125 µm) and oblong amphideal foveas with double contour (vs a single oblong or ovoid loop). An emended diagnosis for Wieseria and pictorial keys for Litinium and Wieseria are provided.

Keywords

deep seanematodetaxonomyLitinium dispariseta sp. nov.Wieseria minor sp. nov.
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 98 , Issue 4 , June 2018 , pp. 801 - 810
Copyright
Copyright © Marine Biological Association of the United Kingdom 2017 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Allgén, C.A. (1947) Zur Kenntnis norwegischer Nematoden X. Neue freilebende marine Nematoden von der Insel Storfosen. Kongelige Norske Videnskabers Selskabs Forhandlinger 19, 52–55.Google Scholar
Bussau, G. (1993) Taxonomische und ökologische Untersuchungen an Nematoden des Peru-Beckens. PhD thesis. University of Kiel, Kiel, 621 pp.Google Scholar
Chitwood, B.G. (1935) Nomenclatorial notes I. Proceedings of the Helminthological Society of Washington 2, 51–54.Google Scholar
Chitwood, B.G. (1951) North American marine nematodes. The Texas Journal of Science 3, 617–672.Google Scholar
Cobb, N.A. (1920) One hundred new nemas (type species of 100 new species). Contributions to a Science of Nematology (Baltimore) 9, 217–343.Google Scholar
De Man, J.G. (1893) Cinquième note sur les Nématodes libres de la mer du Nord et de la Manche. Mémoires de la Société Zoologique de France 20, 33–90.Google Scholar
Filipjev, I.N. (1921) Free-living marine nematodes of the Sevastopol area. Mishawaka: Jerusalem Israel Program for Scientific Translations.Google Scholar
Filipjev, I.N. (1929) Les Nématodes libres de la baie de la Neva et de l'extrémité orientale du Golfe de Finlande. Archiv für Hydrobiologie 20, 637–699.Google Scholar
Gerlach, S.A. (1956) Diagnosen neuer Nematoden aus der Kieler Bucht. Kieler Meeresforschungen 12, 85–109.Google Scholar
Gerlach, S.A. (1958a) Die Nematodenfauna der sublitoralen Region in der Kileler Bucht. Kieler Meeresforschungen 14, 64–90.Google Scholar
Gerlach, S.A. (1958b) Deuxième contribution à la faune des Nématodes des eaux interstitielles littorales de Madagascar. Mémoires de'Institut scientifique de Madagascar (F) 2, 343–365.Google Scholar
Gerlach, S.A. (1962) Freilebende Meesernematoden von den Maledivien. Kieler Meeresforschungen 17, 81–108.Google Scholar
Huang, Y. and Zhang, Z.N. (2005) Three new species of the genus Belbolla (Nematoda: Enoplida: Enchelidiidae) from the Yellow Sea, China. Journal of Natural History 39, 1689–1703.Google Scholar
John, H.T. (1989) Ecology of deep-sea nematodes from the Puerto Rico trench area and Hatteras Abyssal plain. Deep Sea Research Part A Oceanographic Research Papers 36, 1579–1594.Google Scholar
Kreis, H.A. (1929) Freilebende marine Nemaden von der Nordwest-Küste Frankreichs (Trébeurden Côtes du Nord). Capita Zoologica II 7, 1–98.Google Scholar
Lambshead, P.J.D., Brown, C.J., Ferrero, T.J., Hawkins, L.E., Smith, C.R. and Mitchell, N.J. (2003) Biodiversity of nematode assemblages from the region of the clarion-clipperton fracture zone, an area of commercial mining interest. BMC Ecology 3, 1–12.Google Scholar
Miljutin, D.M., Gad, G., Miljutina, M.M., Mokievsky, V.O., Fonseca-Genevois, V. and Esteves, A.M. (2010) The state of knowledge on deep-sea nematode taxonomy: how many valid species are known down there? Marine Biodiversity 40, 143–159.Google Scholar
Miljutina, M.A., Miljutin, D.M., Mahatma, R. and Galéron, J. (2010) Deep-sea nematode assemblages of the Clarion-Clipperton nodule province (tropical north-eastern Pacific). Marine Biodiversity 40, 1–15.CrossRefGoogle Scholar
Mokievsky, V.O., Tchesunov, A.V., Udalov, A.A. and Toan, N.D. (2011) Quantitative distribution of meiobenthos and the structure of the free-living nematode community of the mangrove intertidal zone in Nha Trang Bay (Vietnam) in the South China Sea. Russian Journal of Marine Biology 37, 272–283.Google Scholar
Pastor de Ward, C., Lo, R. V., Villares, G., Milano, V., Miyashiro, L. and Mazzanti, R. (2015) Free-living marine nematodes from San Julián Bay (Santa Cruz, Argentina). Zookeys, 489, 133–144.Google Scholar
Platt, H.M. and Warwick, R.M. (1983) Free-living marine nematodes part I: British enoplids. Pictorial key to world genera and notes for the identification of British species. Synopses of the British Fauna, p. 28. Cambridge: Cambridge University Press.Google Scholar
Smol, N., Muthumbi, A. and Sharma, J. (2014) Order Enoplida. In Schmidt-Rhaesa, A. (ed.) Handbook of zoology, Gastrotricha, Cycloneuralia and Gnathifera, Volume 2, (Nematoda). Berlin: De Gruyter, pp. 193–249.Google Scholar
Soetaert, K., Vincx, M. and Heip, C. (1995) Nematode community structure along a Mediterranean shelf-slope gradient. Marine Ecology 16, 189–206.Google Scholar
Tchesunov, A.V., Thanh, N.V. and Tu, N.D. (2014) A review of the genus Litinium Cobb, 1920 (Nematoda: Enoplida: Oxystominidae) with descriptions of four new species from two contrasting habitats. Zootaxa 3872, 57–74.Google Scholar
Tietjen, J.H. (1971) Ecology and distribution of deep-sea meiobenthos off North Carolina. Deep Sea Research 18, 941–957.Google Scholar
Tietjen, J.H. (1991) Ecology of free-living nematodes from the continental shelf of the central Great Barrier Reef province. Estuarine Coastal and Shelf Science 32, 421–438.Google Scholar
Timm, R.W. (1961) The marine nematodes of the Bay of Bengal. Proceedings of the Pakistan Academy of Science 1, 25–88.Google Scholar
Vanhove, S., Vermeeren, H. and Vanreusel, A. (2004) Meiofauna towards the South Sandwich Trench (750–6300 m), focus on nematodes. Deep Sea Research Part II Topical Studies in Oceanography 51, 1665–1687.Google Scholar
Vitiello, P. (1972) Le genre Wieseria Gerlach, 1956 (Nematoda, Oxystominidae). Tethys 4, 645–650.Google Scholar
Vopel, K. and Thiel, H. (2001) Abyssal nematode assemblages in physically disturbed and adjacent sites of the eastern equatorial Pacific. Deep Sea Research Part II Topical Studies in Oceanography 48, 3795–3808.Google Scholar
Widbom, B. (1984) Determination of average individual dry weights and ash-free dry weights in different sieve fractions of marine meiofauna. Marine Biology 84, 101–108.Google Scholar
Wieser, W. (1954) Beiträge zur Kenntnis der Nematoden submariner Höhlen. Ergebnisse der österreichischen Tyrrhenia-Expedition 1952, Teil II. Österreichische zoologische Zeitschrift 5, 172–230.Google Scholar
Zhang, Z.N. (1983) Three new species of the free-living marine nematodes from a sublittoral station in Firemore Bay, Scotland. Cahiers De Biologie Marine 24, 219–229.Google Scholar