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WoRMS taxon detailsTheristus acer Bastian, 1865
121601 (urn:lsid:marinespecies.org:taxname:121601)
accepted
Species
Monhystera acris Bastian, 1865 · unaccepted
Theristus acer leptosoma Allgén, 1950 · unaccepted
Theristus steineri Filipjev, 1922 · unaccepted
marine
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. Volume XXV. Part II:73-184.
page(s): 156 (84 of pdf) [details] 
Distribution downstream part of middle St. Lawrence estuary; lower St. Lawrence estuary
Distribution downstream part of middle St. Lawrence estuary; lower St. Lawrence estuary [details]
Nemys eds. (2025). Nemys: World Database of Nematodes. Theristus acer Bastian, 1865. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=121601 on 2025-04-16
Nomenclatureoriginal description
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. Volume XXV. Part II:73-184. page(s): 156 (84 of pdf) [details] original description (of Monhystera acris Bastian, 1865) 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. Volume XXV. Part II:73-184. [details] basis of record De Smet, G.; Vincx, M.; Vanreusel, A.; Vanhove, S.; Vanaverbeke, J.; Steyaert, M. (2001). Nematoda - free living. In: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50. 161-174., available online at https://www.vliz.be/nl/imis?refid=26605 [details] Taxonomytaxonomy source
Meldal, 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. (2007). An improved molecular phylogeny of the Nematoda with special emphasis on marine taxa. Molecular Phylogenetics and Evolution. 42(3): 622-636., available online at https://doi.org/10.1016/j.ympev.2006.08.025 [details] Available for editors  [request]Ecologyecology source
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. Volume XXV. Part II:73-184. [details] ecology source Schuurmans Stekhoven, J. H. Jr. (1954). IX. Vrijlevende Nematoden. Veranderingen in de Flora en Fauna van de Zuiderzee (thans Ijsselmeer) na de afsluiting in 1932. 169-185. [details] Available for editors [request]Otheradditional source
Schuurmans Stekhoven, J. H. Jr. (1942). Les nématodes libres marins du Bassin de Chasse d'Ostende [The free-living nematods of the Sluice Dock at Ostend]. Med. K. Belg. Inst. Nat. Wet. 18(12): 1-26. (look up in IMIS) [details] Available for editors
[request]additional source Brunel, P., L. Bosse & G. Lamarche. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. Canadian Special Publication of Fisheries and Aquatic Sciences, 126. 405 pp. (look up in IMIS) [details] Available for editors [request]additional source Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details] additional source Coomans, A. V. (1989). Overzicht van de vrijlevende nematofauna van België (Nematoda). [The freeliving nematofauna of Belgium: a review.]. In Wouters, K.; Baert, L. (Ed.): Invertebraten van België = Invertébrés de Belgique: Verhandelingen van het Symposium "Invertebraten van België" = Comptes rendus du Symposium "Invertébrés de Belgique" = Proceedings of the Symposium "Invertebrates of Belgium". Brussel, 25-26 november 1988. Koninklijk Belgisch Instituut voor Natuurwetenschappen: Brussel, Belgium. 43-56. (look up in IMIS) [details] additional source Schuurmans Stekhoven, J. H. Jr. (1935). Freeliving Marine Nemas of the Belgian Coast. I. and II. Mém. Mus. R. Hist. Nat. Belg. 72: 1-36. [details] Available for editors [request]additional source Steyaert, M.; Vanaverbeke, J.; Vanreusel, A.; Barranguet, C.; Lucas, C.; Vincx, M. (2003). The importance of fine-scale, vertical profiles in characterising nematode community structure. Estuarine, Coastal and Shelf Science. 58(2): 353-366. (look up in IMIS), available online at https://doi.org/10.1016/s0272-7714(03)00086-6 [details] Available for editors [request]additional source Gerlach, S. A. (1965). Freilebende Meeresnematoden aus der Gezeitenzone von Spitzbergen. Veröffentlichungen des Instituts für Meeresforschung in Bremerhaven. 9: 109-172. [details] Available for editors [request]additional source Semprucci, F. (2013). Marine Nematodes from the Shallow Subtidal Coast of the Adriatic Sea: Species List and Distribution. International Journal of Biodiversity. 2013: 1-9., available online at https://doi.org/10.1155/2013/187659 [details] Available for editors [request]additional source Various Authors (2000). Nematode filing cabinet of the Marine Biology Section Ugent - in combination with the NemasLan Ms-Access database (published on CD-Rom, 2000) (look up in IMIS) [details] additional source Allgén, C. A. (1959). Über einige, meistens neue, freilebende marine Nematoden aus dem Feuerland-Archipel (Schwedische Südpolar-Expedition 1901-1903). Zoologischer Anzeiger. Bd. 163, Heft 7/8: 222-243. [details] Available for editors [request]additional source Muller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. Commission Régionale de Biologie Région Nord Pas-de-Calais: France. 307 pp., available online at http://www.vliz.be/imisdocs/publications/145561.pdf [details] additional source Allgén, C. A. (1939). Weitere freilebende Nematoden aus dem Vättern (Südschweden). Festschr. Embrik Strand (Riga). V: 384-394. [details] Available for editors [request]additional source Kito, K. (1981). Studies on the free-living marine nematodes from Hokkaido, IV. Jour. Fac. Sci. Hokkaido Univ. Ser. VI, Zool. 22 (3): 250-278. [details] Available for editors [request]additional source Zhou, H. (2001). Effects of leaf litter addition on meiofaunal colonization of azoic sediments in a subtropical mangrove in Hong Kong. Journal of Experimental Marine Biology and Ecology, Elsevier, Amsterdam 256(1):99-121. [details] Available for editors [request]additional source Yeates, G. W. (2010). Phylum Nematoda: roundworms, eelworms. in: Gordon, D.P. (Ed.) (2010). New Zealand inventory of biodiversity: 2. Kingdom Animalia: Chaetognatha, Ecdysozoa, Ichnofossils. pp. 480-493. [details] additional source Liu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. China Science Press. 1267 pp. (look up in IMIS) [details] Available for editors [request]additional source Warwick, R. M. (1971). Nematode associations in the Exe estuary. J. mar. biol. Ass. U. K. 51: 439-454. [details] Available for editors [request]additional source Heip, C.; Herman, R.; Vincx, M. (1983). Subtidal meiofauna of the North Sea: A review. Biol. Jb. Dodonaea. 51: 116-170. (look up in IMIS) [details] Available for editors [request]additional source Leduc, D.; Gwyther, J. (2008). Description of new species of Setosabatieria and Desmolaimus (Nematoda: Monhysterida) and a checklist of New Zealand free-living marine nematode species. New Zealand Journal of Marine and Freshwater Research. 42(3): 339-362., available online at https://doi.org/10.1080/00288330809509962 [details] Available for editors [request]additional source Allgén, C. A. (1953). Revision der freilebenden marinen Nematoden aus der Umgebung der Staatlichen Zoologischen Station Kristineberg an der Westküste Schwedens. Zoologische Jahrbucher (Systematik). 81: 548-603. [details] Available for editors [request]additional source Allgén, C. A. (1957). On a small collection of freeliving marine nematodes from Greenland and some other arctic regions with reviews and analyses of the compositions of all hitherto known arctic nematode faunas. Meddr. Gronland. 159 (3): 1- 42. [details] Available for editors [request]additional source Allgén, C. A. (1946). Letzter Bericht über freilebende Nematoden aus dem Schalensand- und Kiesboden der Westküste Norwegens. Arkiv for Zoologi. 37 A (15): 1-26. [details] Available for editors [request]additional source Allgén, C. A. (1959). Freeliving marine nematodes. Further zoological results of the Swedish Antarctic expedition, 1901-1903 under the direction of Dr. Otto Nordenskjold. V(2) P.A. Norstedt & Söner: Stockholm. 293 pp. [details] Available for editors [request]additional source Jensen, P. (1984). Ecology of benthic and epiphytic nematodes in brackish waters. Hydrobiologia. 108: 201-217. [details] Available for editors [request]additional source Jensen, P. (1986). The nematode fauna in the sulphide-rich brine seep and adjacent bottoms of the East Flower Garden, NW Gulf of Mexico. II. Monhysterida. Zoologica Scripta. 15(1): 1-11. (look up in IMIS) [details] Available for editors [request]additional source Lorenzen, S. (1977). Revision der Xyalidae (freilebende Nematoden) auf der Grundlage einer kritischen Analyse von 56 Arten aus Nord- und Ostsee. Veroff. Inst. Meeresforsch. Bremerh. 16: 197-261. (look up in IMIS) [details] Available for editors [request] Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
Unreviewed
Diet bacteria, fungi and other nematodes [details]Dimensions Length: male 2.14-2.39 mm, female 2.28-2.49 mm; Maximum width: ale 37-42 u, female 48-50 u; Head: 17-21 u wide [details] Distribution downstream part of middle St. Lawrence estuary; lower St. Lawrence estuary [details] Habitat free-living or bottom dwelling [details] Importance useful in determining environmental quality [details] Reproduction separate sexes; fertilization internal, eggs may be retained until hatching. Young appear as juvenile worms (not larvae). [details] |
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