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Issue: Vol. 3350 No. 1: 19 Jun. 2012
Type: Articles
Published: 2012-06-19
DOI: 10.11646/zootaxa.3350.1.2
Page range: 34–45
Abstract views: 56
PDF downloaded: 1

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

Department of Marine Science, Faculty of Fisheries, Kasetsart University, Bang Khen, Bangkok 10900, Thailand
Division of Liberal Arts and Sciences, Center for Medical Education, Sapporo Medical University, Sapporo 060-8556, Japan
Nematoda Marine nematodes Daptonema hyalocella Daptonema setihyalocella new species taxonomy seagrass bed Halophila ovalis Thailand

Abstract

Daptonema hyalocella sp. n. and D. setihyalocella sp. n. are described from the Ban Pa Khlok seagrass bed, Phuket Prov-ince, Thailand. These new species are characterized by the epidermal chords consisting of large cells with a transparentappearance, as in D. conicum (Filipjev, 1922) and D. trabeculosum (G. Schneider, 1906). The key characteristics of D.hyalocella sp. n. are the peculiar epidermal chords, loose S-shaped spicules with no proximal cephalation, an indistinctgubernaculum with a lateral piece, and two terminal setae. For D. setihyalocella sp. n., the key characteristics are similarpeculiar epidermal chords, but in this case with the L-shaped spicules having proximal cephalation, a distinct gubernaculum with dorsal apophysis and lateral piece, and four terminal setae.

References

  1. Bütschli, O. (1874) Zur Kenntnis der freilebenden Nematoden, insbesondere der des Kieler Hafens. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, 9, 236–292.

    De Man, J.G. (1890) Quatrième note sur les Nématodes libres de la mer du Nord et de la Manche. Mémoires. Societe Zoologique de France, Paris, 3, 169–194.

    Filipjev, I. (1922) Sur les Nématodes libres de la mer d’Azov. Trudy Stavropol'skogo Sel'sko-khozyaistvennogo instituta, 1, 185–208.

    Gerlach, S. (1951) Freilebende Nematoden aus der Verwandtschaft der Gattung Theristus. Zoologische Jahrbücher, Abeilung. Fur Systematik, Ökologie und Geographie der Tiere, 80, 379–406.

    Gerlach, S. (1953) Die Nematodenbesiedlung des Sandstrandes und des Küstengrundwassers an der italienischen Küste. I. Systematischer Teil. Archivio Zoologico Italiano, 37, 517–640.

    Hope, W.D. & Aryuthaka, C. (2009) A partial revision of the marine nematode genus Elzalia (Monhysterida: Xyalidae) with new characters and descriptions of two new species from Khung Kraben Bay, East Thailand. Journal of Nematology, 41, 64–83.

    Hopper, B.E. (1969) Marine nematodes of Canada. II. Marine nematodes from the Minas Basin – Scots Bay area of the Bay of Fundy, Nova Scotia. Canadian Journal of Zoology, 47, 671–690.

    Jensen, P. (1989) Revision of Aponchiidae Gerlach, 1963 (Nematoda: Monhysterida), epibiotic nematodes on shells of intertidal epibenthic invertebrates, with description of new species. Phuket Marine Biological Center Research Bulletin, 50, 1–24.

    Kito, K. & Aryuthaka, C. (1998) Free-living marine nematodes of shrimp culture ponds in Thailand. I. New species of the genera Diplolaimella and Thalassomonhystera (Monhysteridae) and Theristus (Xyalidae). Hydrobiologia, 379, 123–133.

    Kito, K. & Aryuthaka, C. (2006) New mouthless nematode of the genus Parastomonema Kito, 1989 (Nematoda: Siphonolaimidae) from a mangrove forest on the coast of Thailand, and erection of the new subfamily Astomonematinae within the Siphonolaimidae. Zootaxa, 1177, 39–49.

    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.

    Monthum, Y. & Aryuthaka, C. (2006) Spatial distribution of meiobenthic community in Tha Len seagrass bed, Krabi Province, Thailand. Coastal Marine Science, 30, 146–153.

    Pastor de Ward, C.T. (1985) Nematodes marinos de la Ria Deseado (Monhysteroidea, Xyalidae), Santa Cruz, Argentina. II. Physis (Buenos Aires), Secciones A, 43, 113–130.

    Riemann, F. (1966) Die interstitielle Fauna im Elbe-Aestuar. Verbreitung und Systematik. Archiv für Hydrobiologie – Supplement, 31, 1–279.

    Schneider, G. (1906) Beitrag zur Kenntnis der im Uferschlamm des Finnischen Meerbusens frei lebenden Nematoden. Acta Societatis pro Fauna Flora Fennica, 27, 1–40.

    Warwick, R.M., Platt, H.M. & Somerfield, P.J. (1998) Free-living Marine Nematodes. Part III. Monhysterids. Synopses of the British Fauna (New Series), 53. Field Studies Council, Shrewsbury, 296 pp.

    Wieser, W. & Hopper, B. (1967) Marine nematodes of the north east coast of North America. I. Florida. Bulletin of the Museum of Comparative Zoology, 135, 239–344.