New nematode species (Nematoda: Chromadorea) and records from the New Zealand continental shelf
Abstract
Little is known about the diversity of free-living nematodes of New Zealand’s continental shelf environments. A preliminary analysis of samples obtained from the continental shelf along the east coast of New Zealand’s North Island revealed the presence of eleven previously described species, which are recorded from this region of New Zealand for the first time. Two of these species were originally described from intertidal sediments, two were described from subtidal or continental shelf environments (5–40 m depth), and seven were originally described from the continental slope (ca 400–1250 m depth). A further three new species, Psammonema buamphida sp. nov., Paramonohystera spinosipsicula sp. nov. and Sabatieria pararticulata sp. nov. are described. Sabatieria pararticulata sp. nov., shares the unusual feature for the genus of having long, jointed spicules with S. articulata Fu, Leduc & Zhao, 2019, which was also described from New Zealand. The presence of this feature, which is otherwise absent in all other species of the genus, in the two New Zealand species suggests that S. articulata and S. pararticulata sp. nov. likely evolved from a common ancestor.
References
Coomans A. 1979. A proposal for a more precise terminology of the body regions in the nematode. Annales de la Société royale zoologique de Belgique 108: 115–117.
Decraemer W., Coomans A. & Baldwin J. 2014. Morphology of Nematoda. In: Schmidt–Rhaesa A. (ed.) Handbook of Zoology: Gastrotricha, Cycloneuralia and Gnathifera, Volume 2: Nematoda: 1–59. De Gruyter, Berlin. https://doi.org/10.1515/9783110274257.1
Filipjev I.N. 1918. Free-living marine nematodes of the Sevastopol area. Transactions of the Zoological Laboratory and the Sevastopol Biological Station of the Russian Academy of Sciences, Series 2: 1–203.
Filipjev I.N. 1922. New data on free nematodes of the Black Sea (Novye Dannye o Svobodnykh Nematodakh Chernogo Moria.). Trudy Stavropolskogo Selskokhoziaistvennogo Instituta 1: 13–184.
Fonseca G. & Bezerra T.N. 2014. Order Monhysterida Filipjev, 1929. In: Schmidt–Rhaesa A. (ed.) Handbook of Zoology: Gastrotricha, Cycloneuralia and Gnathifera, Volume 2: Nematoda: 435–465. De Gruyter, Berlin. https://doi.org/10.1515/9783110274257.435
Gerlach S.A. & Riemann F. 1973. The Bremerhaven checklist of aquatic nematodes. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven Supplement 4: 1–736. Available from https://epic.awi.de/id/eprint/21883/ [accessed 22 Feb. 2025].
Jacobs J., Anilkumar P.R., Philip R. & Rayaroth D. 2016. Psammonema kuriani (Nematoda: Desmodoroidea), a novel species from the margin of the north-eastern Arabian Sea. Journal of the Marine Biological Association of the United Kingdom 96: 1469–1473. https://doi.org/10.1017/S0025315415001691
Jensen P. 1979. Revision of Comesomatidae (Nematoda). Zoologica Scripta 8: 81–105. https://doi.org/10.1111/j.1463-6409.1979.tb00621.x
Leduc D. & Presswell B. 2023. Chapter 33 – Kingdom Animalia, Phylum Nematoda (roundworms). In: Kelly M., Mills S., Terezow M., Sim-Smith C. & Nelson W. (eds) The Marine Biota of Aotearoa New Zealand. Updating our Marine Biodiversity Inventory: 477–491. NIWA Biodiversity Memoir 136. Available from https://niwa.co.nz/oceans/niwa-biodiversity-memoir-136-marine-biota-aotearoa-nz [accessed 22 Feb. 2025].
Leduc D. & Zhao Z.Q. 2023. Ngā toke o Parumoana: Common Free-living Nematoda of Pāuatahanui Inlet, Te Awarua-o-Porirua Harbour, Wellington. NIWA Biodiversity Memoir 135.
Leduc D., Collins C., Gall M., Lundquist C., Macdonald H., Mackay K., Mountjoy J., Morrison M., Orpin A., Pinkerton M., Spain E., Barry F., Bodie C., Carson-Groom E., Connell A., Fenwick M., Frontin-Rollet G., Halliday J., Leunissen E., …. & Toataua N. 2024. Cyclone Impacts on Fisheries. New Zealand Aquatic Environment and Biodiversity Report 326. Available from https://fs.fish.govt.nz/Page.aspx?pk=113&dk=25605 [accessed 1 Jul. 2024].
Lorenzen, S. (1977) Revision der Xyalidae (freilebende Nematoden) auf der Grundlage einer kritischen Analyse von 56 Arten aus Nord- und Ostsee. Veröffentlichungen des Instituts fur Meeresforschung in Bremerhaven 16: 197–261.
Muthumbi A. & Vincx M. 2016. Psammonema waweri sp. n. (Nematoda: Desmodoridae), a brood protecting free-living marine nematode from the continental shelf and slope sediments along the Kenyan coast. Western Indian Ocean Journal of Marine Science 15: 49–53.
Nemys 2024. Nemys: World Database of Nematodes. Available from https://nemys.ugent.be [accessed 15 Jul. 2024]. https://doi.org/10.14284/366
Platt H.M. 1985. The freeliving marine nematode genus Sabatieria (Nematoda: Comesomatidae). Taxonomic revision and pictorial keys. Zoological Journal of the Linnean Society 83: 27–28. https://doi.org/10.1111/j.1096-3642.1985.tb00872.x
Rosli N., Leduc D. & Probert P.K. 2014. Two new species and a new record of Comesomatidae (Nematoda: Araeolaimidae) from Southern Hikurangi Margin, New Zealand. Zootaxa 3900: 505–525. https://doi.org/10.11646/zootaxa.3900.4.3
Somerfield P.J. & Warwick R.M. 1996. Meiofauna in Marine Pollution Monitoring Programmes: a Laboratory Manual. Ministry of Agriculture, Fisheries and Food, Lowestoft.
Tchesunov A.V. 2014. Order Desmodorida De Coninck, 1965. In: Schmidt-Rhaesa A. (ed.) Handbook of Zoology: Gastrotricha, Cycloneuralia and Gnathifera, Volume 2: Nematoda: 399–434. De Gruyter, Berlin. https://doi.org/10.1515/9783110274257.399
Verschelde D. & Vincx M. 1995. Psammonema gen. n. and Pseudochromadora Daday, 1889 (Nematoda, Desmodoridae) from sandy sediments of Gazi, Kenya. Bulletin de l’Institut royal des Sciences naturelles de Belgique 65: 11–39.
Wieser W. 1954. Reports of the Lund University Chile expedition 1948–1949: II. Chromadoroidea. Lunds Universitets Årsskrift 50: 1–148.
WoRMS. 2024. World Register of Marine Species. https://doi.org/10.14284/366
Yu T. & Xu K. 2015. Two new nematodes, Pseudelzalia longiseta gen. nov., sp. nov. and Paramonohystera sinica sp. nov. (Monhysterida: Xyalidae) from sediment in the East China Sea. Journal of Natural History 49: 509–526. https://doi.org/10.1080/00222933.2014.953224
Zhai H.X., Wang C.M. & Huang Y. 2020. Sabatieria sinica sp. nov. (Comesomatidae, Nematoda) from Jiaozhou Bay, China. Journal of Oceanology and Limnology 38: 539–544. https://doi.org/10.1007/s00343-019-9030-z
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