Biodiversity Literature Repository
Published November 3, 2023 | Version v1
Taxonomic treatment Open

Mesacanthion De Coninck and Schuurmans Stekhoven 1933

Creators

  • 1. https: // orcid. org / 0009 - 0009 - 4985 - 086 X
  • 2. https: // orcid. org / 0000 - 0002 - 7553 - 2031

Description

Genus Mesacanthion (Filipjev, 1927) De Coninck and Schuurmans Stekhoven, 1933

The genus Mesacanthion was first erected as a subgenus of Enoplolaimus by Filipjev (1927) with the original description of seven species: Mesacanthion banale (Filipjev, 1927) De Conninck & Schurmans Stekhoven, 1933, Mesacanthion breviseta (Filipjev, 1927) De Conninck & Schurmans Stekhoven, 1933, Mesacanthion ditlevseni (Filipjev, 1927) De Conninck & Schurmans Stekhoven, 1933, Mesacanthion karense (Filipjev, 1927) De Conninck & Schurmans Stekhoven, 1933, Mesacanthion lucifer (Filipjev, 1927) De Conninck & Schurmans Stekhoven, 1933, Mesacanthion majus (Filipjev, 1927) De Conninck & Schurmans Stekhoven, 1933, Mesacanthion klugei (Filipjev, 1927) De Conninck & Schurmans Stekhoven, 1933 and the inclusion of three other species Mesacanthion diplechma (Southern, 1914) Filipjev, 1927, M. audax and Mesacanthion conicum (Filipjev, 1918) Filipjev, 1927, which were previously described as Enoplus and Enoplolaimus (in the case of the last two species). De Coninck and Schuurmans Stekhoven (1933) raised Mesacanthion to genus including all species described by Filipjev (1927) and transfered other six species to it: M. infantile; Mesacanthion latignathum (Ditlevsen, 1918) De Coninck and Schuurmans Stekhoven, 1933; Mesacanthion microsetosum (Allgén, 1932) De Coninck and Schuurmans Stekhoven, 1933; Mesacanthion oxycephalum (Ditlevsen, 1926) De Coninck and Schuurmans Stekhoven, 1933; Mesacanthion tenuicaudatum (Ssaweljev, 1912) De Coninck and Schuurmans Stekhoven, 1933 and Mesacanthion virile (Ditlevsen, 1930) De Coninck and Schuurmans Stekhoven, 1933. Two decades later, Mesacanthion hirsutum Gerlach, 1953 was described based on a male and a female from Italy.At the same time, a genus review was proposed by Wieser (1953) who considered all species described by Allgén as doubtful, including Mesacanthion primitivum Allgén, 1929, Mesacanthion gracilisetosum Allgén, 1930, Mesacanthion paradentatum Allgén, 1932, Mesacanthion donsitarvae Allgén, 1935, M. pacificum and M. hawaiiense; and transfered M. latignathum to Mesacanthoides and M. klugei and M. oxycephalum to Paramesacanthion. This author also described two other species Mesacanthion ungulatum Wieser, 1953 and Mesacanthion longissimesetosum Wieser, 1953 and proposed an identification key for eight of the 14 valid species known at the time. Later, 33 species were considered as valid and six as invalid by Gerlach & Riemann (1974) who also corrected the species epithet to comply with the rules of Latin grammar. Later, eight species were described, and Jeong et al. (2019) did a detailed review of the genus presenting 38 valid species and suggesting two species (Mesacanthion brachycolle Allgén, 1959 and Mesacanthion ungulatum Wieser, 1953) as species inquirendae and nominated one as nomen nudum (M. microsetosum – here we consider this species as species inquirenda within Paramesacanthion). These authors also provided a taxonomic key for 22 species with spicules shorter than 2 anal body diameters (abd). The most recent species added to this genus are M. bifidum, Mesacanthion longigubernaculum Lo Russo & Pastor de Ward, 2021 and Mesacanthion sanantoniensis Lo Russo & Pastor de Ward, 2021, all occurring along the Argentine coast. Here, we consider Mesacanthion arcuatile Wieser, 1959, M. banale, M. conicum and Mesacanthion cricetoides Wieser, 1959 as species inquirendae because these species present only female descriptions. We also consider M. karense as species inquirenda since it is based on juvenile description, and M. tenuicaudatum because its illustrations are missing in the original description. The given key includes all 36 valid species and it is partially adapted from the one provided by Jeong et al. (2019) which presents only species with spicules smaller than 2 abd.

Diagnosis based in Wieser (1953); Platt & Warwick (1983); Smol et al. 2014 and Jeong et al. (2019): Outer labial and cephalic setae situated at middle or anterior end of cephalic capsule. Mandible well-developed, provided with claws, arch-shaped, consisting of two rod-like columns anteriorly united by a curved bar. Teeth shorter than mandibles. Spicule mostly short, unipartite and symmetrical, sometimes long, bipartite (divided by a seam: M. ditlevseni) and asymmetrical (anisomorphic and anisometric: M. diplechma). If long, usually gubernaculum present with caudal apophysis. Marine and freshwater.

Number of valid species: 36

1. Mesacanthion africanthiforme Warwick, 1970a (English Channel)

2. Mesacanthion africanum Gerlach, 1957b (Central Africa)

3. Mesacanthion agubernatus Vitiello, 1971 (Mediterranean)

4. Mesacanthion alexandrinus Nicholas, 1993 (Lake Alexandrina, South Australia)

5. Mesacanthion arabium Warwick, 1973 (Arabian Sea)

6. Mesacanthion armatum Timm, 1961 (Bay of Bengal, lapsus armatus)

7. Mesacanthion audax (Ditlevsen, 1918) Filipjev, 1927 (Öresund)

Syn. Enoplolaimus audax Ditlevsen, 1918

8. Mesacanthion bifidum Lo Russo & Pastor de Ward, 2021 (Nuevo Gulf, Argentina)

9. Mesacanthion breviseta (Filipjev, 1927) De Coninck & Schuurmans Stekhoven, 1933 (Barents Sea)

Syn. Enoplolaimus (Mesacanthion) breviseta Filipjev, 1927

10. Mesacanthion cavei Inglis, 1964 (South Africa)

11. Mesacanthion ceeum Inglis, 1964 (South Africa)

12. Mesacanthion diplechma (Southern, 1914) Filipjev, 1927 (Irish Coast of Atlantic)

Syn. Enoplus diplechma Southern, 1914

13. Mesacanthion ditlevseni (Filipjev, 1927) De Coninck & Schuurmans Stekhoven, 1933 (Barents Sea)

Syn. Enoplolaimus (Mesacanthion) ditlevseni Filipjev, 1927

Enoplolaimus angustignathus Ditlevsen, 1928

14. Mesacanthion fricum Inglis, 1966 (South Africa, lapsus frica)

15. Mesacanthion heterospiculum Sergeeva, 1974 (Black Sea, Russia)

16. Mesacanthion hirsutum Gerlach, 1953 (Mediterranean)

17. Mesacanthion infantile (Ditlevsen, 1930) De Coninck & Schuurmans Stekhoven, 1933 (New Zealand)

Syn. Enoplolaimus infantilis Ditlevsen, 1930

Enoplolaimus mortenseni Allgén, 1951

Enoplolaimus philippinensis Allgén, 1951

18. Mesacanthion jejuensis Jeong, Tchesunov & Lee, 2019 (Jeju Island, South Korea)

19. Mesacanthion kerguelense Mawson, 1958 (Kerguelen Islands)

20. Mesacanthion longigubernaculum Lo Russo & Pastor de Ward, 2021 (Chubut, San Jorge Gulf, Argentina)

21. Mesacanthion longispiculum Gerlach, 1954b (Mediterranean)

22. Mesacanthion longissimesetosum Wieser, 1953 (Chile, lapsus longissimesetosus)

23. Mesacanthion lucifer (Filipjev, 1927) De Coninck & Schuurmans Stekhoven, 1933 (Barents Sea)— type species

Syn. Enoplolaimus (Mesacanthion) lucifer Filipjev, 1927

24. Mesacanthion majus (Filipjev, 1927) De Coninck & Schuurmans Stekhoven, 1933 (Kara Sea, lapsus major)

Syn. Enoplolaimus (Mesacanthion) major Filipjev, 1927

25. Mesacanthion marisalbi Galtsova, 1976 (White Sea)

26. Mesacanthion monhystera Gerlach, 1967 (Red Sea)

27. Mesacanthion obscurum Gagarin & Klerman, 2006 (Mediterranean Sea, Israeli Coast)

28. Mesacanthion pali Wieser, 1959 (Puget Sound, Washington, USA)

29. Mesacanthion pannosum Wieser, 1959 (Puget Sound, Washington, USA)

30. Mesacanthion propinquum Gagarin & Klerman, 2006 (Mediterranean Sea, Israeli Coast)

31. Mesacanthion proximum Gerlach, 1957a (Santos, Brazil)

32. Mesacanthion rigens Gerlach, 1957a (Bertioga, Brazil)

33. Mesacanthion sanantoniensis Lo Russo & Pastor de Ward, 2021 (Rio Negro, San Matías Gulf, Argentina)

34. Mesacanthion southerni Warwick, 1973 (Arabian Sea)

35. Mesacanthion studiosum Inglis, 1964 (South Africa, lapsus studiosa)

36. Mesacanthion virile (Ditlevsen, 1930) De Coninck & Schuurmans Stekhoven, 1933 (Stewarti Island, New Zealand)

Syn. Enoplolaimus virilis Ditlevsen, 1930

SPECIES INQUIRENDAE

1. Mesacanthion arcuatile Wieser, 1959 (Alki Beach, Washington, USA, lapsus arcuatilis)

2. Mesacanthion banale (Filipjev, 1927) De Coninck & Schuurmans Stekhoven, 1933 (Barents Sea)

Syn. Enoplolaimus (Mesacanthion) banalis Filipjev, 1927

3. Mesacanthion brachycolle Allgén, 1959 (Falkland Islands)

4. Mesacanthion conicum (Filipjev, 1918) Filipjev, 1927 (Black Sea, Russia)

Syn. Enoplolaimus conicus Filipjev, 1918

5. Mesacanthion cricetoides Wieser, 1959 (Richmond Beach, Washington, USA)

6. Mesacanthion donsitarvae (Allgén, 1935) Wieser, 1953 (Norway)

Syn. Enoplolaimus donsitarvae Allgén, 1935

7. Mesacanthion gracilisetosum (Allgén, 1930) Wieser, 1953 (Macquarie Island)

Syn. Enoplolaimus gracilisetosus Allgén, 1930

8. Mesacanthion hawaiiense (Allgén, 1951) Wieser, 1953 (Honolulu, Hawaii)

Syn. Enoplolaimus hawaiiensis Allgén, 1951

9. Mesacanthion karense (Filipjev, 1927) De Coninck & Schuurmans Stekhoven, 1933 (Kara Sea)

Syn. Enoplolaimus (Mesacanthion) karensis Filipjev, 1927

10. Mesacanthion pacificum (Allgén, 1947) Wieser, 1953 (Gulf of Panama, Perlas Island)

Syn. Enoplolaimus pacificus Allgén, 1947

11. Mesacanthion paradentatum (Allgén, 1932) Wieser, 1953 (Campbell Island, lapsus paradentatus)

Syn. Enoplolaimus paradentatus Allgén, 1932

12. Mesacanthion primitivum (Allgén, 1929) Wieser, 1953 (Skagerrak, lapsus primitivus)

Syn. Enoplolaimus primitivus Allgén, 1929

13. Mesacanthion tenuicaudatum (Ssaweljev, 1912) De Coninck & Schuurmans Stekhoven, 1933 (White Sea)

Syn. Enoplolaimus tenuicaudatus Ssaweljev, 1912

14. Mesacanthion ungulatum Wieser, 1953 (Seno Reloncavi, Chile, lapsus ungulatus)

Notes

Published as part of De Souza, João V. & Maria, Tatiana F., 2023, Taxonomic review of Thoracostomopsidae (Nematoda, Enoplida): state of the art, list of valid species and dichotomous keys, pp. 463-496 in Zootaxa 5361 (4) on pages 477-479, DOI: 10.11646/zootaxa.5361.4.2, http://zenodo.org/record/10152589

Files

Files (11.9 kB)

Name Size Download all
md5:da49a1fa0a334e123e9661e4d91bba89
11.9 kB Download

System files (115.4 kB)

Name Size Download all
md5:2bb5617d650d7592dc81eb28280e6f15
115.4 kB Download

Linked records

Additional details

Identifiers

URL
http://treatment.plazi.org/id/EA795F35253CFFE4FF27FF5F53B220C8

Related works

Is part of
Journal article: 10.11646/zootaxa.5361.4.2 (DOI)
Journal article: http://zenodo.org/record/10152589 (URL)
Journal article: http://publication.plazi.org/id/1640274D2532FFF4FFB0FFC8573A224D (URL)
Journal article: http://zoobank.org/DAB237DC-1444-4007-BCCA-CB92CBE66617 (URL)
Is source of
https://sibils.text-analytics.ch/search/collections/plazi/EA795F35253CFFE4FF27FF5F53B220C8 (URL)

Biodiversity

Family
Thoracostomopsidae
Genus
Mesacanthion
Kingdom
Animalia
Order
Enoplida
Phylum
Nematoda
Scientific name authorship
De Coninck and Schuurmans Stekhoven
Taxon rank
genus
Taxonomic concept label
Mesacanthion and Schuurmans, 1933 sec. Souza & Maria, 2023

References

  • Filipjev, I. N. (1927) Les nematodes libres des mers septentrionales appartenant a la famille des Enoplidae. Archiv fur Naturgeschichte, Abteilung A, Original-Arbeiten, 1 - 216.
  • De Coninck, L. A. & Schuurmans Stekhoven, J. H. (1933) The freeliving marine nemas of the Belgian Coast. II With general remarks on the structure and the system of nemas. Memoires Institut Royal Des Sciences Naturelles de Belgique, 58, 3 - 163.
  • Southern, R. (1914) Nemathelmia, Kinorhyncha and Chaetognatha. Proceedings of the Royal Irish Academy, 31, 1 - 80.
  • 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, 4, 1 - 350.
  • Ditlevsen, H. (1918) Marine freeliving nematodes from Danish waters. Vidensk. Meddeleiser fra Dansk Naturhisforisk Forening i KjObenhavn, 70 (7), 147 - 214.
  • Allgen, C. A. (1932) Weitere Beitrage zur Kenntnis der marinen Nematodenfauna der Campbellinsel. Nyt Magazin for Naturvidenskaberne, 70, 97 - 198.
  • Ditlevsen, H. (1926) Free-living Nematodes. The Danish Ingolf-Expedition. Vol. IV. Part 6. Kobenhavns universitet, Zoologisk Museum, Copenhagen, 74 pp.
  • Ssaweljev, S. (1912) Zur Kenntnis der freilebenden Nematoden des Kolafjords und des Relictensee Mogilnoje. Travaux de la Societe (Imperiales) des Naturalistes de Saint-Petersbourg, 43, 108 - 126.
  • Ditlevsen, H. (1930) Papers from Dr. Th. Mortensen's Pacific Expedition 1914 - 16. 52. Marine free-living nematodes from New Zealand. Videnskabelige Meddelelser fra Naturhistorisk Forening, 87, 201 - 242.
  • Gerlach, S. A. (1953) Die Nematodenbesiedlung des Sandstrandes und des K ¸ stengrundwassers an der italienischen K ¸ ste. I. Systematischer teil. Archivio Zoologico Italiano, 37, 517 - 640.
  • Wieser, W. (1953) Free-living marine nematodes. I. Enoploidea. Chile reports 10. Lund. Univ. Arsskrift, 49, 1 - 155.
  • Allgen, C. A. (1929) Freilebende marine Nematoden aus den Umgebungen der Staatlichen Zoologischen Station Kristineberg an der Westk ¸ ste Schwedens. Capita Zoologica, 2 (8), 1 - 52.
  • Allgen, C. A. (1930) Uber eine neue Art des Genus Enoplolaimus de Man, Enoplolaimus gracilisetosus von der Macquarieinsel. Zoologischer Anzeiger, 92, 189 - 191.
  • Allgen, C. A. (1935) Zur Kenntnis norwegischer Nematoden. V. Weitere neue oder wenig 654 bekannte freilebende marine Nematoden aus der Strandzone bei Tarva. Det Konglige 655 Norske Videnskabers Selskab Forhandlinger, 8 (15), 47 - 50.
  • Gerlach, S. A. & Riemann, F. (1974) The Bremerhaven Checklist of Aquatic Nematodes: A catalog of Nematoda Adenophorea excluding the Dorylaimida. Veroffentlichungen des Instituts fur Meeresforschung in Bremerhaven, 1 - 2 (Supplement 4), 1 - 734.
  • Jeong, R., Tchesunov, A. V. & Lee, W. (2019) Bibliographic revision of Mesacanthion Filipjev, 1927 (Nematoda: Thoracostomopsidae) with description of a new species from Jeju Island, South Korea. PeerJ, 7, 1 - 30. https: // doi. org / 10.7717 / peerj. 8023
  • Allgen, C. A. (1959) Freeliving marine nematodes. Further zoological results of the Swedish Antarctic expedition, 1901 - 1903 under the direction of Dr. Otto Nordenskjold. Vol. 2. P. A. Norstedt & S ˆ ner, Stockholm, 293 pp.
  • Lo Russo, V. & Pastor de Ward, C. T. (2021) Three new species of Mesacanthion Filipjev, 1927 (Nematoda: Thoracostomopsidae) from Argentine coasts. European Journal of Taxonomy, 787, 17 - 31. https: // doi. org / 10.5852 / ejt. 2021.787.1611
  • Wieser, W. (1959) Free-living nematodes and other small invertebrates of Puget Sound beaches. University of Washington Publications in Biology, 19, 1 - 179.
  • Platt, H. M. & Warwick, R. M. (1983) Freeliving marine nematodes. Part 1. British enoplids. Pictorial key to world genera and notes for the identification of British species. Cambridge University press, for the Linnean Society of London and the estuarine and brackish-water sciences association, Cambridge, 307 pp.
  • Smol, N., Muthumbi, A. & Sharma, J. (2014) Order Enoplida Filipjev, 1929 In: Gastrotricha, Cycloneuralia and Gnathifera; Nematoda. Handbook of Zoology. De Gruyter, Berlin, pp. 193 - 249. https: // doi. org / 10.1515 / 9783110274257.193
  • Warwick, R. M. (1970 a) Fourteen new species of freeliving marine nematodes from the Exe estuary. Bulletin of the British Museum (Natural History), Zoology, 19 (4), 139 - 177. https: // doi. org / 10.5962 / bhl. part. 24086
  • Gerlach, S. A. (1957 b) Marine Nematoden von der Kongo-M ¸ ndung. Bulletin. Institut Royal des Sciences Naturelles de Belgique. Mededelingen. Koninklijk Belgisch Instituut voor Natuurwetenschappen, 28, 1 - 16.
  • Vitiello, P. (1971) Nematodes nouveaux des vases terrigenes cotieres des cotes provencales. Tethys, 2 (4), 859 - 875.
  • Nicholas, W. L. (1993) Two new species of nematode (Nematoda: Enoplida: Thoracostomopsidae) from Lake Alexandrina, South Australia. Transactions of the ASAE, 117 (3 - 4), 163 - 170.
  • Timm, R. W. (1961) The Marine Nematodes of the Bay of Bengal. Proceedings of the Pakistan Academy of Sciences, 1 (1), 25 - 88.
  • Inglis, W. G. (1964) The marine Enoplida (Nematoda): a comparative study of the head. Bulletin of the British Museum (Natural History), 11 (4), 263 - 376. https: // doi. org / 10.5962 / bhl. part. 4719
  • Ditlevsen, H. (1928) Free-living Nematodes from Greenland, Land and Freshwater. Meddelelser om Gronland, 23, 157 - 250.
  • Inglis, W. G. (1966) Marine nematodes from Durban, South Africa. Bulletin of the British Museum (Natural History), 14 (4), 79 - 106.
  • Sergeeva, N. G. (1974) New free-living nematodes (Enoplida) from the Black Sea. 2. Zoologicheskii Zheitschrift, 53 (1), 120 - 124.
  • Allgen, C. A. (1951) Pacific Freeliving Marine Nematodes. (Papers from Dr. Th. Mortensen's Pacific Expedition 1914 - 16. LXXVI). Videnskabelige Meddelelser fra Dansk Naturhistorisk Forening Kebenhavn, 113, 263 - 411.
  • Mawson, P. M. (1958) Free-living nematodes. Section 3: Enoploidea from Subantarctic stations. Report Series. BANZ Antarctic Research Expedition, 1929 - 31, 14, 307 - 358.
  • Gerlach, S. A. (1954 b) Nematodes marins libres des eaux souterraines littorals de Tunisie et d'Algerie. Vie Millieu, 4 (2), 221 - 237.
  • Galtsova, V. V. (1976) Free-living marine nematodes as a component of the meiobenthos of Chupa Inlet of the White Sea. Issledovanija fauni morjei (Nematody i ikh Rol'v Meiobentose), 17 (25), 165 - 272.
  • Gerlach, S. A. (1967) Freilebende Meeres-nematoden von den Sarso-Inseln (Rotes Meer). Meteor Forschungsergebnisse, Reihe D, 2, 19 - 43.
  • Gagarin, V. G. & Klerman, A. K. (2006) Two new species of Mesacanthion Filipjev, 1927 (Nematoda: Enoplida) from the Mediterranean Sea. Nematology, 8 (4), 533 - 538. https: // doi. org / 10.1163 / 156854106778614001
  • Gerlach, S. A. (1957 a) Die Nematodenfauna des Sandstrandes an der Kuste von Mittelbrasilien (Brasilianische MeeresNematoden IV). Mitteilungen aus dem Museum fur Naturkunde in Berlin. Zoologisches Museum und Institut fur Spezielle Zoologie, Berlin, 33 (2), 411 - 459. https: // doi. org / 10.1002 / mmnz. 19570330206
  • Allgen, C. A. (1947) West American nematodes (Papers from Dr. Th. Mortensen's Pacific Expedition 1914 - 16). Meddeleiser fra Dansk naturhisforisk Forening i KjObenhavn, 110, 65 - 219.