Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 3575 No. 1: 7 Dec. 2012
Type: Articles
Published: 2012-12-07
DOI: 10.11646/zootaxa.3575.1.5
Page range: 78–88
Abstract views: 46
PDF downloaded: 1

New species of the genera Draconema Cobb, 1913 and Paradraconema Allen & Noffsinger, 1978 (Nematoda: Draconematidae) from the Andaman Islands, Indian Ocean, with keys to the species

Department of Biology, Center for Medical Education, Sapporo Medical University, Sapporo 060-8556, Japan
Department of Biology, Indian School of Learning, I.S.M. Annexe, P.O. – I.S.M., Dhanbad-826004, Jharkhand, India
Nematoda Draconematidae Draconema Paradraconema Andaman Islands India taxonomy new species

Abstract

Two new species of Family Draconematidae Filipjev, 1918, Draconema andamanense sp. nov. and Paradraconemapachylumbus sp. nov., are described from the coast of the Andaman Islands, India. Both species were extracted from sed-iments among the intertidal macroalgae. Draconema andamanense resembles D. japonicum in having the gubernaculumwith peculiar distal dilation in males. However, it differs from all the congeneric species including D. japonicum by thesmaller number of subventral adhesion tubes (10–11 in male and 12–14 in female). Paradraconema pachylumbus differsfrom all the congeneric species by having the cloacal region remarkably enlarged towards the dorsal side and the conico-cylindrical tail abruptly narrowing. Paradraconema pachylumbus most resembles P. floridense with longitudinally areo-lated annules, elongate loop-shaped amphids, prominent eyespots, subventral precloacal Acan-set and gubernaculum withlateral dilation, but is distinguishable from it by the number of setae on the tail in males and females, and the gubernaculum length and tail length in males, as well as the peculiar feature of an enlarged cloacal region in males.

References

  1. Allen, M.C. & Noffsinger, E.M. (1978) A revision of the marine nematodes of the superfamily Draconematoidea Filipjev, 1918 (Nematoda: Draconematina). University of California Publication in Zoology, 109, 1–133.

    Chinnadurai, G. & Fernando, O. J. (2007) Meiofauna of mangroves of the southeast coast of India with special reference to the free-living marine nematode assemblage. Estuarine Coastal and Shelf Science, 72, 329–336.

    Cobb, N.A. (1913) Draconema: A remarkable genus of marine free-living nematodes. Journal of Washington Academy of Sciences, 3, 145–149.

    Cobb, N.A. (1929) The ambulatory tubes and other features of the nema Draconema cephalatum. Journal of Washington Academy of Sciences, 19, 255–260.

    Decraemer, W. (1982) Draconematidae and Epsilonematidae (Nematoda) from Laing Island Papua New Guinea, with one new genus and three new species. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique : Biologie, 54, 1–22.

    Decraemer, W. (1989) Three new draconematid species from Papua New Guinea. Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, 59, 5–24.

    Kito, K. (1976) Studies on the free-living marine nematodes from Hokkaido, I. Journal of the Faculty of Science, Hokkaido University, Series VI, Zoology, 20, 568–578.

    Kito, K. (1979) Notes on the postembryonic development of Draconema japonicum Kito, 1976 (Nematoda: Draconematidae). Journal of the Faculty of Science, Hokkaido University, Series VI, Zoology, 22, 88–98.

    Nanajkar, M., Ingole, B. & Chatterjee, T. (2011) Spatial distribution of the nematodes in the subtidal community of the Central West Coast of India with emphasis on Terchellingia longicaudata (Nematoda: Linhomoeidae). Italian Journal of Zoology, 78, 222–230.

    Rao, G.C. (1980) On the zoogeography of the interstitial meiofauna of the Andaman and Nicobar Islands, Indian Ocean. Record of Zoological Survey of India, 77, 153–178.

    Rao, G.C. (1987) Meiofauna of the Marine National Park, South Andaman. Journal of the Andaman Science Association, 3(2), 88–97.

    Rao, G.C. (1988) Meiofauna of the intertidal sediments of Great Nicobar. Journal of the Andaman Science Association, 4 (2), 89–100.

    Rao, G.C. & Ganapati, P.N. (1968) The interstitial fauna inhabiting the beach sands of Waltair coast. Proceedings of the National Institute of Sciences of India, 34(2), 84–125.

    Rho, H.S. & Kim, W. (2004) Redescription of the free-living marine nematode species, Draconema japonicum Kito, 1976 (Nematoda: Draconematidae), by scanning electron microscopy. Korean Journal of Biological Science, 8, 235–245.

    Rho, H.S. & Kim, W. (2005) Paradraconema jejuense, a new species of Genus Paradraconema (Nematoda: Draconematidae) from Korea. The Korean Journal of Systematic Zoology, 21, 81–91.

    Rho, H.S., Decraemer, W., Sørensen, M.V., Min, W.G., Jung, J. & Kim, W. (2011) Megadraconema cornutum, a new genus and species from Korea, with a discussion of its classification and relationships within the family Draconematidae (Nematoda, Desmodorida) based on morphological and molecular characters. Zoological Science, 28, 58–84.

    Venekey, V., Lage, L.M. & Da Fonsêca-Genevois, V. (2005) Draconema brasiliensis and Draconema fluminensis (Chromadorida, Draconematidae): two new species of free living nematodes from a rocky shore affected by upwelling on the Brazilian coast. Zootaxa, 1090, 51–64.