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Issue: Vol. 5468 No. 3: 13 Jun. 2024
Type: Article
Published: 2024-06-13
DOI: 10.11646/zootaxa.5468.3.6
Page range: 523-540
Abstract views: 84
PDF downloaded: 6

Free-living marine nematodes of the family Sphaerolaimidae (Chromadoria, Monhysterida) from the mangroves of the Qeshm Island, Persian Gulf

Department of Invertebrate Zoology; Faculty of Biology; M.V. Lomonosov Moscow State University; 119991 Moscow; Russia
Department of Plant Protection; Faculty of Agriculture; University of Zanjan; 45371-38791; Zanjan; Iran
Department of Plant Protection; Faculty of Agriculture; University of Zanjan; 45371-38791; Zanjan; Iran
Department of Fisheries; Faculty of Marine Science and Technology; University of Hormozgan; Bandar Abbas; Iran
Nematoda descriptions redescriptions Nematodanew species Parasphaerolaimus Sphaerolaimus taxonomy

Abstract

Three species of the family Sphaerolaimidae were found and are described for the first time along the coast of the Qeshm Island. Sphaerolaimus qeshmensis sp. n. is characterized by large body, position of the amphideal fovea at the level of gymnostoma, rather long spicules and presence of dorso-caudal apophysis of the gubernaculum. The new species differs from related S. kleini, S. limosus, S. makrolasius and S. micropapillatus by body length, subcephalic setae length, and other fine details. Sphaerolaimus pumilus sp. n. is characterized by minute body, position of the amphideal fovea posterior to the stegostoma, and short spicules without a gubernaculum. The new species differs from the close S. paragracilis by slightly smaller subcephalic setae arranged in eight groups and total absence of even a vestigial gubernaculum. Parasphaerolaimus brevisetosus found first in mangroves of North Vietnam is redescribed with addition of some important details missed in the original diagnosis. Genera diagnoses of Sphaerolaimus and Parasphaerolaimus are emended and amended. Data on diet of the three studied species are given.

 

References

  1. Bastian, H.C. (1865) Monograph of the Anguillulidae, or Free nematoids, marine, land, and freshwater; with descriptions of 100 new species. The Transactions of the Linnean Society of London, 25 (2),73–184. https://doi.org/10.1111/j.1096-3642.1865.tb00179.x
  2. Cavalcanti, M.F. & Venekey, V. (2017) Parasphaerolaimus magdolnae sp. n. (Nematoda, Sphaerolaimidae) with intra-uterine development of its offspring from a Brazilian estuarine system. Zootaxa, 4358 (2), 339–350. https://doi.org/10.11646/zootaxa.4358.2.7
  3. Coomans, A. & Eyalem-Abebe, A. (2006) Order Monhysterida. In: Eyualem-Abebe, A., Traunspurger, W. & Andrássy, I. (Eds.), Freshwater Nematodes: Ecology and Taxonomy. CABI Publishing, Cambridge, Massachusetts, pp. 574–603. https://doi.org/10.1079/9780851990095.0574
  4. Fadeeva, N.P. (1983) Study of nematodes of the family Sphaerolaimidae Filipjev, 1918 (Nematoda, Monhysterida) from the Sea of Japan. Zoologicheskii Zhurnal, 62 (9), 1321–1333. [in Russian, English summary]
  5. 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 II, 4 (I & II), 1–255 + 1–203. [translated from Russian by M. Raveh, Printed in Jerusalem by Keter Press Binding: Wiener Bindery Ltd., Jerusalem, Israel, Available from: https://nemys.ugent.be/aphia.php?p=sourcedetails&id=3303 (accessed 23 November 2023)
  6. Filipjev, I.N. (1929) Classification of free-living Nematoda and relations to parasitic forms. Journal of Parasitology, Urbana, 15, 281–282.
  7. De Coninck, L.A. (1965) Classe des Nématodes - Systématique des Nématodes et sous-classe des Adenophorea. Traité de Zoologie (éd.GRASSE), 4 (2), 586–681.
  8. Ditlevsen, H. (1918) Marine freeliving nematodes from Danish waters. Videnskabelige Meddelelser fra Dansk naturhistorisk Forening i Kjøbenhavn, 70 (7), 147–214.
  9. Fonseca, G. & Bezerra, T.N. (2014) Order Monhysterida Filipjev, 1929. In: Schmidt-Rhaesa, A. (Ed.), Handbook of Zoology: Gastrotricha, Cycloneuralia and Gnathifera. Vol. 2. Nematoda. De Gruyter, Berlin-Boston, pp. 435–465. https://doi.org/10.1515/9783110274257.435
  10. Gagarin, V.G. (2014) Two new species of free-living nematodes (Nematoda, Sphaerolaimidae) from mangroves of the Red River Delta, Vietnam. Amurian Zoological Journal, 6 (1), 3–11. https://doi.org/10.33910/1999-4079-2014-6-1-3-11
  11. Gharahkhani, A., Pourjam, E., Leduc, D. & Pedram, M. (2020a) A molecular phylogenetic reappraisal of Richtersiidae Kreis, 1929 (Nematoda: Desmodorida), with two new species of intertidal nematodes from the Persian Gulf. Nematology, 22 (9), 1045–1060. https://doi.org/10.1163/15685411-bja10010
  12. Gharahkhani, A., Pourjam, E., Holovachov, O. & Pedram, M. (2020b) Phylogenetic relationships of Leptolaimus de Man, 1876 (Plectida: Leptolaimidae) with description of two new species from the Persian Gulf, Iran. Nematology 23 (2), 153–169. https://doi.org/10.1163/15685411-bja10036
  13. Gharahkhani, A., Pourjam, E., Leduc, D. & Pedram, M. (2021) Further data on Iranian marine nematode diversity, with description of three new Desmodoridae Filipjev, 1922 (Nematoda: Desmodorida) species from the Persian Gulf. Nematology, 23 (7), 781–802. https://doi.org/10.1163/15685411-bja10077
  14. Gharahkhani, A., Pourjam, E., Leduc, D. & Pedram, M. (2022) The nematode genus Haliplectus Cobb, 1913 (Chromadorea: Haliplectidae): phylogenetic relationships, description of a new species from the Persian Gulf, southern Iran, and a tabular key to valid species. Nematology, 24 (6), 639–655. https://doi.org/10.1163/15685411-bja10153
  15. Gourbault, N. & Boucher, G. (1981) Nématodes abyssaux (Campange Walda du N/O «Jean Charcot») III. Une sous-famille et six espèces nouvelles de Sphaerolaimidae. Bulletin du Muséum national d'Histoire naturelle, 2ème Série, 3 (4), 1035–1052. https://doi.org/10.5962/p.304621
  16. Heip, C., Vincx, M. & Vranken, G. (1985) The ecology of marine nematodes. Oceanography and Marine Biology—An Annual Review, 23, 399–489.
  17. Inglis, W.G. (1983) An outline classification of the phylum Nematoda. Australian Journal of Zoology, 31 (2), 243–255. https://doi.org/10.1071/ZO9830243
  18. Jensen, P. (1992) Predatory nematodes from the deep-sea: description of species from the Norwegian Sea, diversity of feeding types and geographical distribution. Cahiers de Biologie Marine, 33, 1–23.
  19. Lorenzen, S. (1966) Diagnosen einiger freilebender Nematoden von der schleswig-holsteinischen Westküste. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven, 10 (2), 31–48.
  20. Lorenzen, S. (1978) Postembryonalentwicklung von Steineria- und Sphaerolaimidenarten (Nematoden) und ihre Konsequenzen für die Systematik. Zoologischer Anzeiger, 200 (1/2), 53–78.
  21. Lorenzen, S. (1981) Entwurf eines phylogenetischen Systems der freilebenden Nematoden. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven, 7 (Supplement), 1–472.
  22. Lorenzen, S. (1994) The phylogenetic systematics of freeliving nematodes. Ray Society Monographs Series. Vol. 162. The Ray Society, London, 383 pp.
  23. Moens, T., Braeckman, U., Derycke, S., Fonseca, G., Gallucci, F., Gingold, R., Guilini, K., Ingels, J., Leduc, D., Vanaverbeke, J., Van Colen, C., Vanreusel, A. & Vincx, M. (2014) Ecology of free-living marine nematodes. In: Schmidt-Rhaesa, A. (Ed.), Handbook of Zoology: Gastrotricha, Cycloneuralia and Gnathifera. Vol. 2. Nematoda. De Gruyter, Berlin-Boston, pp. 109–152. https://doi.org/10.1515/9783110274257.109
  24. Nemys eds. (2023) Nemys: World Database of Nematodes. Available from: https://nemys.ugent.be (accessed 23 November 2023) https://doi.org/10.14284/366
  25. Sahraean, N., Van Campenhout, J., Rigaux, A., Mosallanejad, H., Leliaert, F. & Moens, T. (2017a) Lack of population genetic structure in the marine nematodes Ptycholaimellus pandispiculatus and Terschellingia longicaudata in beaches of the Persian Gulf, Iran. Marine Ecology, 38, e12426. https://doi.org/10.1111/maec.12426
  26. Sahraean, N., Bezerra, T.C., Ejlali Khanaghah, K., Mosallanejad, H., Van Ranst, E. & Moens, T. (2017b) Effects of pollution on nematode assemblage structure and diversity on beaches of the northern Persian Gulf. Hydrobiologia, 799, 349–369. https://doi.org/10.1007/s10750-017-3234-z
  27. Schulz, E. (1932) Beiträge zur Kenntnis mariner Nematoden aus der Kieler Bucht. Zoologische Jahrbücher, Abteilung für Systematik, Geographie und Biologie der Tiere, 62, 331–430.
  28. Tchesunov, A.V. (1980) New data on free-living nematodes of the superfamily Monhysteroidea of the Caspian Sea. Zoologischeskii Zhurnal, 59 (7), 973–985 [in Russian, English summary]
  29. Tchesunov, A.V. & Fedyaeva, M.A. (2019) Buccal capsule and intestine ultrastructure of the marine predatory nematode Sphaerolaimus balticus (Monhysterida: Sphaerolaimidae). Nematology, 22 (3), 327–342. https://doi.org/10.1163/15685411-00003308
  30. Tchesunov, A.V. & Miljutin, D.M. (2006) Three new free-living nematode species (Monhysterida) from the Arctic abyss, with revision of the genus Eleutherolaimus Filipjev, 1922 (Linhomoeidae). Russian Journal of Nematology, 14 (1), 57–75.
  31. Vitiello, P. (1971) Nématodes libres marins des vases profondes du Golfe du Lion. III. Monhysterida, Araeolaimida, Desmodorida. Téthys, 2, 647–690.
  32. Zograf, J.K., Pavlyuk, O.N., Trebukhova, Y.A. & Tu, N.D. (2017) Revision of the genus Parasphaerolaimus (Nemata: Sphaerolaimidae) with description of new species. Zootaxa, 4232 (1), 58–70. https://doi.org/10.11646/zootaxa.4232.1.4
  33. Zograf, J.K., Pavlyuk, O.N., Trebukhova, Y.A. & Tu, N.D. (2020) Description of three new Sphaerolaimus species (Nematoda: Sphaerolaimidae) from the South China Sea. Zootaxa, 4755 (3), 491–514. https://doi.org/10.11646/zootaxa.4755.3.3
  34. Wieser, W. (1959) Free-living nematodes and other small invertebrates of Puget Sound beaches. University of Washington Publications in Biology. Vol. 19. University of Washington Press, Seattle, Washington, 179 pp.