Abstract
This paper describes a new species of Tripylella and gives a new record of Tripyla (family Tripylidae) in Australia, and provides a key to species in the genus Tripylella. Tripylella australis sp. nov. is characterized by having females with a long body (1804–1832 μm), a=41–42, b= 4.4–4.5, c=10.3–11.3, c’=5.4–6.4 and V=51–54%, outer labial setae 13–14 μm long and cephalic setae 3.7–4.5 μm long in one whorl, dorsal tooth posterior to two subventral teeth, tail tapering uniformly, and four single caudal setae on the dorsal part of the tail. Males are similar to females, and have a long body (1870–2014 μm), a=50–55, b= 4.7–4.9, c=11.3–11.4, c’=5.8–6.0 and T=53–56%, horn-shaped spicules, 36–38 μm long, a straight gubernaculum 14–16 μm in length, tail tapering almost uniformly, and four caudal setae on the dorsal part of the tail. A key for identification of Tripylella species is presented. Tripyla setifera Bütschli 1873 is recorded for the first time in Australia, and is re-described.
References
Alekseev, V.M. & Bestalannaya, S.G. (1990) Aquatic nematodes of the genus Tripyla from Primorye and questions on the phylogeny of Tripylidae (Nematoda, Enoplida). Trudy Instituta Biologii Vnutrennikh Vod, 64, 129–144.
Altherr, E. & Delamare Deboutteville, C. (1972) Nématodes interstitiels des eaux douces des États-Unis d'Amérique (États de Washington, du Colorado et du Massachusetts) récoltés par Cl. Delamare Deboutteville. Annales de Spéléologie, 27, 683–689.
Andrássy, I. (1977) Ergebnisse der zoologischen Forschungen von Dr. Z. Kaszab in der Mongolei. 356. Süsswasser- und Bodennematoden aus den Jahren 1967–1968. Opuscula Zoologica Budapest, 13, 3–24.
Andrássy, I. (1985) A dozen new nematode species from Hungary. Opuscula Zoologica Budapest, 19, 3–39.
Andrássy, I. (2006) Three new species of the family Tripylidae (Penetrantia: Enoplida) from South America. International Journal of Nematology, 16, 208–216.
Andrássy, I. (2007) Pedozoologica Hungarica No. 4. Free–living nematodes of Hungary, II. Hungarian Natural History Museum, Budapest, 5 pp. [pp. 419–423]
Andrássy, I. (2008) Two new and a known species of the family Tripylidae (Nematoda: Enoplida) from the tropics. Opuscula Zoologica Budapest, 37, 3–9.
Asghari, R., Eskandari, A., Maafi, Z.T., Zhao, Z.Q., Alvarez-Ortega, S. & Nadirkhanloo, M. (2015) Description of Trischistoma abharensis n. sp.(Nematoda: Trischistomatidae) and first record of Tripylella intermedia (Bütschli, 1873) Brzeski & Winiszewska-Ślipinska, 1993 (Nematoda: Tripylidae) from Iran. Zootaxa, 3986 (3), 357–372.
https://doi.org/10.11646/zootaxa.3986.3.5Asghari, R., Eskandari, A., Maafi, Z.T., Álvarez-Ortega, S. & Zhao, Z.Q. (2017) Morphological and molecular characterisation of new and known species of Tripyla Bastian, 1865 (Triplonchida: Tripylidae) from northern Iran, with phylogenetic relationships, compendium and identification key. Nematology, 19, 21–56.
https://doi.org/10.1163/15685411-00003030Bastian, H. Ch. (1865) Monograph on the Anguillulidae, or free nematoids, marine, land, and freshwater; with descriptions of 100 new species. Transactions of the Linnaean Society of London, 25, 73–184.
https://doi.org/10.1111/j.1096-3642.1865.tb00179.xBrzeski, M.W. (1963) Nematode genera of the family Tripylidae (Nematoda, Enoplida). Acta Zoologica Cracoviensia, 8, 295–308.
Brzeski, M.W. (1964) Revision der Gattungen Tripyla Bastian und Paratripyla gen. n. (Nematoda, Tripylidae). Annales Zoologici, 22, 157–178.
Brzeski, M.W. & Winiszewska-Ślipińska, G. (1993) Taxonomy of Tripylidae (Nematoda: Enoplia). Nematologica, 39, 12–52.
https://doi.org/10.1163/187529293X00024Bütschli, O. (1873) Beiträge zur Kenntniss der freilebenden Nematoden. Nova Acta Academiae Caesareae Leopoldino-Carolinae Germanicae Naturae Curiosorum, 36, 1–144.
Cid del Prado Vera, I., Ferris, H. & Nadler, S.A. (2010) Soil inhabiting nematodes of the genera Trischistoma, Tripylina and Tripyla from México and the USA with descriptions of new species. Journal of Nematode Morphology and Systematics, 13, 29–49.
Cid del Prado Vera, I., Ferris, H. & Nadler, S.A. (2016) Five new species of the genus Tripylella (Nematoda: Enoplida: Tripylidae). Zootaxa, 4109 (2), 198–217.
https://doi.org/10.11646/zootaxa.4109.2.5de Man, J.G. (1880) Die einheimischen, frei in der reinen Erde und im süssen Wasser lebenden Nematoden. Tijdschrift van de nederlandse Dierkundige Vereeniging, 5, 1–104.
Gagarin, V.G. (1993) Free-living nematodes from freshwater of Russia. Gidrometeoizdat, Saint-Petersburg, 350 pp. [in Russian]
Gagarin, V.G. (1994) A new species of genus Paratripyla (Nematoda: Tripylidae). Biologiya Vnutrennikh Vod Informatsionnyi Byulleten, 96, 22–24.
Gagarin, V.G. (1997) Fauna of free-living nematodes of reservoirs from Archipelago Novaya Zemlya. Biologiya Vnutrennikh Vod, 3, 33–40.
Gagarin, V.G. & Naumova, T.V. (2016) Tobrilus methanus sp. n. and Tripyla posolskii sp. n. (Nematoda, Triplonchida) from Lake Baikal, Russia. Zootaxa, 4196 (1), 95–106.
https://doi.org/10.11646/zootaxa.4196.1.5Holterman, M., van der Wurff, A., van den Elsen, S., van Megen, H., Bongers, T., Holocachov, O., Bakker, J. & Helder, J. (2006) Phylum-wide analysis of SSU rDNA reveals deep phylogenetic relationships among nematodes and accelerated evolution toward crown clades. Molecular Biology and Evolution, 13, 1792–1800.
https://doi.org/10.1093/molbev/msl044Holovachov, O. (2014) Nematodes from terrestrial and freshwater habitats in the Arctic. Biodiversity Data Journal, 2, e1165.
https://doi.org/10.3897/BDJ.2.e1165Meldal, B.H., Debenham, N.J., De Ley, P., De Ley, I.T., Vanfleteren, J.R., Vierstraete, A.R., Bert, W., Borgonie, G., Moens, T., Tyler, P.A., Austen, M.C., Blaxter, M.L., Rogers, A.D. & Lambshead, P.J.D. (2007) An improved molecular phylogeny of the Nematoda with special emphasis on marine taxa. Molecular Phylogenetics and Evolution, 42, 622–636.
https://doi.org/10.1016/j.ympev.2006.08.025Micoletzky, H. (1922) Die freilebenden Erd-Nematoden. Archiv für Naturgeschichte, 87A, 1–650.
Nesterov, P.I. (1979) Plant-parasitic and free-living nematodes of south-west of USSR. Kishinev, Shtiintza, 312 pp.
Schierenberg, E. (2005) Unusual cleavage and gastrulation in a freshwater nematode: developmental and phylogenetic implications. Development Genes and Evolution, 215, 103–108.
https://doi.org/10.1007/s00427-004-0454-9Seinhorst, W. (1959) A rapid method for the transfer of nematodes from fixative to anhydrous glycerine. Nematologica, 4, 67–69.
https://doi.org/10.1163/187529259X00381Skwarra, E. (1921) Diagnosen neuer freilebenden Namatoden. Zoologischer Anzeiger, 53, 66–74.
Tsalolikhin, S.J. (1976) New species of nematodes of the order Enoplida in the Baikal Lake. Zoologichesky Zhurnal, 55, 346–353. [in Russian]
Tsalolikhin, S.J. (1983) Nematodes of the families Tobrilidae and Tripylidae of the World Fauna. Nauka, Leningrad, 232 pp. [in Russian]
Tsalolikhin, S.J. (2003) Tripyla italica sp. n. (Nematoda, Enoplida, Tripylidae). Zoologičeskij žurnal, 82, 1122–1125. [in Russian]
Voronov, D.A., Panchin, Y.V. & Spiridonov, S.E. (1998) Nematode phylogeny and embryology. Nature, 395, 28.
https://doi.org/10.1038/25637van Megen, H., van den Elsen, S., Holterman, M., Karssen, G., Mooyman, P., Bongers, T., Holovachov, O., Bakker, J. & Helder, J. (2009) A phylogenetic tree of nematodes based on about 1200 full-length small subunit ribosomal DNA sequences. Nematology, 11, 927–950.
https://doi.org/10.1163/156854109X456862Vieira, P., Sturhan, D., Barbosa, P., Padre, L. & Mota, M. (2010) List of the terrestrial nematodes (nematoda) from Azores. In: Borges, P.A.V., Costa, A., Cunha, R., Gabriel, R., Goncalves, V., Martins, A.F., Melo, I., Parente, M., Raposeiro, P., Rodrigues, P., Santos, R.S., Silva, L., Vieira, P. & Vieira, V. (Eds.), A list of the terrestrial and marine biota from the Azores. Princípia, Cascais, pp. 37–126.
Whitehead, A.G. & Hemming, J.R. (1965) A comparison of some quantitative methods of extracting small vermiform nematodes from soil. Annals of Applied Biology, 55, 25–38.
https://doi.org/10.1111/j.1744-7348.1965.tb07864.xWiniszewska-Ślipińska, G., Brzeski, M.W., Choi, Y.E. & Kim, J.I. (2000) Tripylidae (Nematoda: Enoplia) from Korea. Annales Zoologici, 50, 297–306.
Zhao, Z.Q. (2009) New Zealand species of the genus Tripyla Bastian, 1865 (Nematoda: Triplonchida: Tripylidae). I: A new species, a new record and key to long-tailed species. Zootaxa, 2291, 35–50.
Zhao, Z.Q. (2011) A review of the genus Trischistoma Cobb, 1913 (Nematoda: Enoplida), with descriptions of four new species from New Zealand. Zootaxa, 3045, 1–25.
Zhao, Z.Q. & Xu, Y.M. (2013) New Zealand species of the genus Tripyla Bastian, 1865 (Nematoda: Triplonchida: Tripylidae). II: Two new, a known species and key to species. Zootaxa, 3637 (4), 432–449.
https://doi.org/10.11646/zootaxa.3637.4.3Zhao, Z.Q., Xi, T.Y. & Xu, Y.M. (2014) A new species of the genus Tripylella Brzeski & Winiszewska-Ślipińska, 1993 (Nematoda: Triplonchida: Tripylidae) from New Zealand. Transactions of the Royal Society of South Australia, 138, 267–276.
https://doi.org/10.1080/03721426.2014.11649014Zullini, A. (2006) Order Triplonchida. In: Eyualem, A., Andrássy, I. & Traunspurger, W. (Eds.), Freshwater Nematodes: Ecology and Taxonomy. CABI, Wallingford, pp. 293–325.
https://doi.org/10.1079/9780851990095.0293