Echiniscus testudo
| Echiniscus testudo | |
|---|---|
 | |
| On a grain of sand | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Tardigrada |
| Class: | Heterotardigrada |
| Order: | Echiniscoidea |
| Family: | Echiniscidae |
| Genus: | Echiniscus |
| Species: | E. testudo |
| Binomial name | |
| Echiniscus testudo (Doyère, 1840) | |
| Synonyms[5][6] | |
Echiniscus testudo is a cosmopolitan species of tardigrade.
Taxonomy
[edit]The species was described by Louis Michel François Doyère in 1840; he placed it in the genus Emydium.[1]
G. Ramazzotti and W. Maucci classified E. filamentos mongoliensis Iharos, 1973[4] as a synonym of E. testudo in 1983; this was followed by other tardigradologists.[5] In 2017, Piotr Gąsiorek and colleagues restored it as a distinct taxon and elevated it to species level: E. mongoliensis.[7]
Gąsiorek and colleagues also classified E. filamentosus Plate, 1888[8] and E. glaber Bartoš, 1937 as junior synonyms of E. testudo.[7]
Distribution
[edit]It is found throughout most of the Palaearctic,[9] and has been recorded in all continents except Antarctica and Australia.[10][11] Most reports are Holarctic.[12] Locations where it has been recorded include: Denmark, Egypt, the Faroe Islands, France, Germany, Greece, Greenland, Israel, Italy, Morocco,[9] Iberia,[13] Mongolia,[14] and China.[10][15]
Doyère based his description off specimens collected in Paris.[1] The neotype designated by Gąsiorek and colleagues was collected in Paris's Montmartre Cemetery.[7] The type localities of the junior synonyms E. bellermanni and E. inermis are both in Germany: the former is Greifswald,[2] and the latter is the Taunus mountains near Frankfurt.[3]
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Dorsal view, showing its four segmented bands
References
[edit]- ^ a b c Doyère, [L. M. F.] (1840). "Mémoire sur les Tardigrades". Annales des sciences naturelles. Ser. 2. 14: 281;Pl. 12, Figs. 1–3.
- ^ a b Schultze, Carolus Augustus Sigismundus (1840). Echiniscus Bellermanni animal crustaceum, macrobioto Hufelandii affini. Berolinum: G. Reimer.
- ^ a b Richters, Ferd. (1902). "Beträge zur Kenntnis der Fauna der Umgebung von Frankfurt a.M." Bericht der Senckenbergischen Naturforschenden Gesellschaft in Frankfurt Am Main. 1902 (2): 11–12;Pl. 1, Fig. 3.
- ^ a b Iharos, Gy. (1973). "Angaben zur geographischen Verbreitung der Tardigraden" [Data to Geographical Distribution of Tardigrada] (PDF). Opuscula Zoologica. 12 (1–2). Budapest: 84–85.
- ^ a b Guidetti, Roberto G.; Bertolani, Roberto B. (2005). "Tardigrade taxonomy: an updated check list of the taxa and a list of characters for their identification". Zootaxa. 845: 24–25. doi:10.11646/zootaxa.845.1.1.
- ^ Degma, Peter; Bertolani, Roberto; Guidetti, Roberto (2017). "Actual checklist of Tardigrada species (2009–2017, 32nd Edition: 01-06-2017)" (PDF). p. 15. Archived (PDF) from the original on 1 August 2017.
- ^ a b c Gąsiorek, Piotr; Stec, Daniel; Morek, Witold; Michalczyk, Łukasz (October 2017). "An integrative redescription of Echiniscus testudo (Doyère, 1840), the nominal taxon for the class Heterotardigrada (Ecdysozoa: Panarthropoda: Tardigrada)". Zoologischer Anzeiger. 270: 107–122. doi:10.1016/j.jcz.2017.09.006.
- ^ Plate, Ludwig H. (1888). "Beträge zur Naturgeschichte der Tardigraden". Zoologische Jahrbücher. 3 (3): 532.
- ^ a b Jørgensen, Aslak; Møbjerg, Nadja; Kristensen, Reinhardt M. (2007). "A molecular study of the tardigrade Echiniscus testudo (Echiniscidae) reveals low DNA sequence diversity over a large geographical area". Journal of Limnology. 66 (Suppl. 1, Proceedings of the Tenth International Symposium on Tardigrada): 77–83. doi:10.4081/jlimnol.2007.s1.77.
- ^ a b Beasley, Clark W.; Miller, William R. (2007). "Tardigrada of Xinjiang Uygur Autonomous Region, China". Journal of Limnology. 66 (Suppl. 1, Proceedings of the Tenth International Symposium on Tardigrada): 52. doi:10.4081/jlimnol.2007.s1.49.
- ^ McInnes, S.J. (1994). "Zoogeographic distribution of terrestrial/freshwater tardigrades from current literature". Journal of Natural History. 28 (2): 273–274. doi:10.1080/00222939400770131.
- ^ McInnes, Sandra J.; Michalczyk, Łukasz; Kaczmarek, Łukasz (2017). "Annotated zoogeography of non-marine Tardigrada. Part IV: Africa". Zootaxa. 4284 (1): 16–17. doi:10.11646/zootaxa.4284.1.1. Archived (PDF) from the original on 17 October 2017.
- ^ Maucci, W.; Durante, M. V. (1984). "I Tardigradi della Penisola Iberica". Miscel·lània Zoològica. 8: 71.
- ^ Kaczmarek, Łukasz; Michalczyk, Łukasz (2006). "The Tardigrada Fauna of Mongolia (Central Asia) with a Description of Isohypsibius altai sp. nov. (Eutardigrada: Hypsibiidae)" (PDF). Zoological Studies. 45 (1): 13.
- ^ Li, Xiaochen (2007). "Tardigrades from the Tsinling Mountains, central China with descriptions of two new species of Echiniscidae (Tardigrada)". Journal of Natural History. 41 (41–44): 2725. doi:10.1080/00222930701711046. S2CID 84732197.