Published May 27, 2021 | Version v1
Taxonomic treatment Open

Mesostoma ehrenbergii

  • 1. Programa de Pós-graduação em Biologia de Ambientes Aquáticos Continentais (PPGBAC / FURG), Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, RS, Brazil. * Correspondence: E-mail: rtvianna @ gmail. com (Vianna). & Universidade Federal do Rio Grande, Instituto de Ciências Biológicas, Laboratório de Biologia de Parasitos de Organismos Aquáticos, Av.
  • 2. Universidade Federal do Rio Grande, Instituto de Ciências Biológicas, Laboratório de Biologia de Parasitos de Organismos Aquáticos, Av.
  • 3. División Zoología Invertebrados, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Boulevard 120 & 61, La Plata, Argentina. E-mail: fbrusa @ fcnym. unlp. edu. ar (Brusa) & Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
  • 4. Programa de Pós-graduação em Biologia de Ambientes Aquáticos Continentais (PPGBAC / FURG), Instituto de Ciências Biológicas, Universidade Federal do Rio Grande, RS, Brazil. * Correspondence: E-mail: rtvianna @ gmail. com (Vianna). & Norwegian Institute for Water Research (NIVA), Ecotoxicology and Risk Assessment Section, Gaustadalléen 21, 0349, Oslo, Norway.

Description

Mesostoma ehrenbergii (Focke, 1836) (Fig. 6A)

Synonyms: Planaria ehrenbergii Focke, 1836.

Mesostomum ehrenbergii Örsted, 1844.

Mesostoma wardii Woodworth, 1896.

Studied material: Eighteen individuals studied alive in squashed preparations, six of them fixed in alcohol (MZUSP PL 2260).

Localities: Site 1 (28/02/2019) and Site 2 (9/10/2018), associated with benthal and phytal microhabitats.

(*): Measurement based on images and scales from the references. NA: not available.

Description: Body of live individuals are 5.4 ± 2.3 mm (1.6–8.7 mm; n = 14) long and 1.5 ± 0.7 mm (0.4–2.9 mm; n = 13) wide, flattened and leaf-shaped, yellow-whitish. Round eggs of ± 0.24 mm in diameter (Fig. 6A).

Taxonomic remarks: The general appearance and anatomy of our specimens are in accordance with descriptions made for the Neotropical region (Beauchamp 1939; Marcus 1943 1946; Ponce de León 1985; Noreña-Janssen and Faubel 1992; Gamo and Leal-Zanchet 2004; Noreña et al. 2006b) and other biogeographical regions (Fuhrmann 1894; Stout 1953; Luther 1963; Young 2001). However, the body size of our specimens is smaller than those described for the Neotropical region by Beauchamp (1939) (9 mm), Marcus (1946) (15 mm), Noreña-Janssen (1995) (8–10 mm) and Gamo and Leal-Zanchet (2004) (3, 4 and 6 mm); but larger than those found in Peru by Noreña et al. (2006b) (1–1.5 mm).

Distribution: Widely distributed in freshwater ponds around the world (see Tyler et al. 2016 for a complete overview).

Notes

Published as part of Reyes, Jhoe, Binow, Daniela, Vianna, Rogério T., Brusa, Francisco & Martins, Samantha E., 2021, Free-living Microturbellarians (Platyhelminthes) from Wetlands in Southern Brazil, with the Description of Three New Species, pp. 1-33 in Zoological Studies 60 (22) on pages 14-16, DOI: 10.6620/ZS.2021.60-22, http://zenodo.org/record/12824095

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Linked records

Additional details

Biodiversity

References

  • Papi F. 1959. Specie nuove o poco note del gen. Macrostomum (Turbellaria: Macrostomida) rinvenute in Italia. Monit Zool Ital 66: 1 - 19.
  • Luther A. 1960. Die Turbellarien Ostfennoskandiens. I. Acoela, Catenulida, Macrostomida, Lecithoepitheliata, Prolecithophora, und Proseriata. Acta Soc Fauna Flora Fenn 7: 1 - 155.
  • Schmidt P, Sopott-Ehlers B. 1976. Interstitielle Fauna von Galapagos XV. Macrostomum O. Schmidt, 1848 und Siccomacrostomum triviale nov. gen. nov. spec. (Turbellaria, Macrostomida). Mikrofauna Meeresbodens 57: 363 - 405.
  • Xin F, Zhang S-Y, Shi Y-S, Wang L, Zhang Y, Wang A-T. 2019. Macrostomum shenda and M. spiriger, two new brackish-water species of Macrostomum (Platyhelminthes: Macrostomorpha) from China. Zootaxa 4603: 105 - 124. doi: 10.11646 / zootaxa. 4603.1.5.
  • Young J. 1976. Systematic Studies on Limnic Macrostomum Species (Turbellaria, Macrostomida) from East Africa. Zool Scr 5: 49 - 60.
  • Ax P. 2008. Plathelminthes aus Brackgewassern der Nordhalbkugel. Ad W L M 1: 1 - 696.
  • Ferguson FF, Jones ERJ. 1940. Studies on the Turbellarian Fauna of the Norfolk Area, I. Am Midl Nat 24: 184 - 189.
  • Adami M, Damborenea C, Ronderos JR. 2012. A new limnic species of Macrostomum (Platyhelminthes: Macrostomida) from Argentina and its muscle arrangement labeled with phalloidin. Zool Anz 251: 197 - 205. doi: 10.1016 / j. jcz. 2011.08.006.
  • Kolasa J. 1973 b. Two New Species of Macrostomum (Turbellaria), A redescription of an Established Species and New Records from Poland. Boll Zool 40: 181 - 200. doi: 10.1080 / 11250007309430067.
  • Schockaert ER. 2014. Marine Macrostomorpha (Platyhelminthes, Rhabditophora) from the Algarve (Southern Portugal). Zootaxa 3872: 577 - 590. doi: 10.11646 / zootaxa. 3872.5.8.
  • Beauchamp P. 1939. Percy Sladen Trust Expedition to lake Titicaca in 1937. V. Rotifers et Turbellaries. Third series. Trans Linn Soc Lond 1: 51 - 79.
  • Marcus E. 1943. O Turbelario Mesostoma ehrenbergii (Focke 1836) no Brasil. Bol Ind Anim 6: 12 - 15.
  • Marcus E. 1946. Sobre Tubellaria Brasileiros. Bol Fac Fil Cienc Letr Univ Sao Paulo Zool 11: 5 - 254.
  • Ponce de Leon R. 1985. Turbellaria de Uruguay II. Sobre Mesostoma ehrenbergii (Focke) (Rhabdocoela Typhloplanidae). Rev Fac Hum Cien (Ciencias Biologicas) 1: 381 - 391.
  • Norena-Janssen C, Faubel A. 1992. Revision of the Subfamily Mesostominae, Rhabdocoela, Platyhelminthes. Mitt Hamb Zool Mus Inst 89: 7 - 47.
  • Gamo J, Leal-Zanchet AM. 2004. Freshwater microturbellarians (Platyhelminthes) from Rio Grande do Sul, Brazil. Rev Bra Zool 21: 897 - 903.
  • Norena C, Damborenea C, Brusa F, Escobedo M. 2006 b. Free-living Platyhelminthes of the Pacaya-Samiria National Reserve, a Peruvian Amazon floodplain. Zootaxa 1313: 39 - 55. doi: 10.11646 / zootaxa. 1313.1.2.
  • Fuhrmann O. 1894. Die Turbellarien der Umgebung von Basel. Rev Suisse Zool 2: 213 - 292.
  • Stout VM. 1953. A Note on the Occurrence in New Zealand of Mesostoma ehrenbergii (Focke) Schmidt, 1848 (Turbellaria, Rhabdocoela). T Roy Soc NZ Zool 81: 295 - 301.
  • Luther A. 1963. Die Turbellarien Ostfennoskandiens IV. Neorhabdocoela 2. Typhloplanoida: Typhloplanidae, Solenopharyngidae und Carcharodopharyngidae. Acta Soc Fauna Flora Fenn 16: 1 - 163.
  • Young JO. 2001. Keys to the Freshwater Microturbellarians of Britain and Ireland: With Notes on the Their Ecology. Sutcliffe D. W. (Eds.), FBA Scientific Publication (First ed.). Freshwater Biological Association.
  • Norena-Janssen C. 1995. Studies on the taxonomy and ecology of the Turbellaria (Plathelminthes) in the floodplain of the Parana river (Argentina) II. Taxonomy and ecology of the Turbellaria. Arch Hydrobiol / Suppl 107: 211 - 262.
  • Tyler S, Schilling S, Hooge M, Bush L. 2016. Turbellarian taxonomic database. http: // turbellaria. umaine. edu / turbella. php. Accessed 25 March 2018.