Hostname: page-component-586b7cd67f-vdxz6 Total loading time: 0 Render date: 2024-11-27T18:42:55.139Z Has data issue: false hasContentIssue false
  • English
  • Français

A new species of Allogenus (Tricladida, Maricola, Uteriporidae) from South Georgia, Sub-Antarctica

Published online by Cambridge University Press:  04 December 2013

Odile Volonterio  and
Paul E. Brewin
Odile Volonterio*
Affiliation:
Sección Zoología de Invertebrados, Facultad de Ciencias, Universidad de la República, Iguá 4225, piso 8 sur, Montevideo, Uruguay
Paul E. Brewin
Affiliation:
Shallow Marine Surveys Group, PO Box 598, Stanley, Falkland Islands, FIQQ 1ZZ, South Atlantic Department of Natural Resources–Fisheries, Falkland Islands Government, By-Pass Rd, Stanley, Falkland Islands, FIQQ 1ZZ, South Atlantic
*
Correspondence should be addressed to: O. Volonterio, Sección Zoología de Invertebrados, Facultad de Ciencias, Universidad de la República, Iguá 4225, piso 8 sur, Montevideo, Uruguay email: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

South Georgia is a remote sub-Antarctic island, considered a marine biodiversity ‘hotspot’ in the Southern Ocean. During a survey along the north coast of South Georgia several marine planarians were found. One of the specimens was a new species of Allogenus (Uteriporidae), which is described here as Allogenus sluysi sp. nov. The new species has the characteristics of the genus and can be distinguished from the type and only known species, Allogenus kerguelensis, by its smaller size, blackish-brown pigmentation, presence of three retinal cells in each eye cup, position of its testes half-way between the ventral and dorsal body surfaces or at a slightly more ventral position, and by having an ejaculatory duct that opens centrally at the tip of the penis papilla. The presently known geographical distribution of Allogenus, the heterogeneous marine planarian species composition in South Georgia, and the distribution of these species in this region are in agreement with a previously proposed vicariance hypothesis, albeit that dispersal cannot be ruled out.

Keywords

TricladidaMaricolaUteriporidaeAllogenusSouth Georgia
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 94 , Issue 2 , March 2014 , pp. 309 - 316
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Böhmig, L. (1908) Turbellarien. Résultats du Voyage du S. Y. Belgica en 1897–1898–1899 sous le commandement de A. de Gerlache de Gomery. Rapports Scientifiques. Zoologie. Anvers: J.E. Buschmann.Google Scholar
Böhmig, L. (1914) Die rhabdocoelen Turbellarien und Tricladen der deutschen Südpolar-Expedition 1901–1903. In Drygalski, E. von (ed.) Deutsche Südpolar-Expedition 15, Zoologie 7, Heft 1. Berlin: Druck und Verlag von Georg Reimer, pp. 1–34.Google Scholar
Clarke, A. and Johnston, N.M. (2003) Antarctic marine benthic diversity. Oceanography and Marine Biology: an Annual Review 41, 47–114.Google Scholar
Dalziel, I.W.D. and Elliot, D.H. (1971) Evolution of the Scotia Arc. Nature 233, 246–252.Google Scholar
Davenport, J. (1997) Comparisons of the biology of the intertidal subantarctic limpets Nacella concinna and Kerguelenella lateralis. Journal of Molluscan Studies 63, 39–48.CrossRefGoogle Scholar
Davenport, J. and Macalister, H. (1996) Environmental conditions and physiological tolerances of intertidal fauna in relation to shore zonation at Husvik, South Georgia. Journal of the Marine Biological Association of the United Kingdom 76, 985–1002.Google Scholar
Davenport, J., Barnett, P.R.O. and McAllen, R.J. (1997) Environmental tolerances of three species of the Harpacticoid copepod genus Trigiopus. Journal of the Marine Biological Association of the United Kingdom 77, 3–16.Google Scholar
De Broyer, C. and Danis, B. (Editors). SCAR-MarBIN: The Antarctic Marine Biodiversity Information Network. Available at: http://www.scarmarbin.be/ (accessed 27 October 2013).Google Scholar
De Broyer, C. and Rauscher, M. (1999) Faunal diversity of the benthic amphipods (Crustacea) of the Magellan region as compared to the Antarctic (preliminary results). Scientia Marina 63 (Supplement 1), 281–293.CrossRefGoogle Scholar
De Broyer, C., Clarke, A., Koubbi, P., Pakhomov, E., Scott, F., Vanden Berghe, W. and Danis, B. (Editors). The SCAR-MarBIN Register of Antarctic Marine Species (RAMS). Available at: http://www.scarmarbin.be/scarramsabout.php (accessed 27 October 2013).Google Scholar
Goodwin, C., Brewin, P.E. and Brickle, P. (2012) Sponge biodiversity of the South Georgia Island with descriptions of fifteen new species. Zootaxa 3542, 1–48.Google Scholar
Hallez, P. (1906) Note préliminaire sur les Triclades maricoles de mers antarctiques et du cap Horn, reçueillis par l'expédition Charcot. Bulletin du Muséum d'Histoire Naturelle de Paris 12, 395–399.Google Scholar
Hallez, P. (1907) Vers Polyclades et Triclades maricoles. Expédition antarctique française (1903–1905) commandée par le Dr. Jean Charcot. Paris: Masson.Google Scholar
Hallez, P. (1911) Un Bdellouride non parasite des mers antarctiques. Comptes Rendus de l'Académie des Sciences, Paris, 152, 461–463.Google Scholar
Hallez, P. (1913) Vers polyclades et triclades maricoles. 2me Expédition Antarctique Française. Paris: Masson.Google Scholar
Hogg, O.T., Barnes, D.K.A. and Griffiths, H.J. (2011) Highly diverse, poorly studied and uniquely threatened by climate change: an assessment of marine biodiversity on South Georgia's continental shelf. PloS One 6, e19795.CrossRefGoogle ScholarPubMed
Hyman, L.H. (1955) Miscellaneous marine and terrestrial flatworms from South America. American Museum Novitates 1742, 1–34.Google Scholar
Hyman, L.H. (1958) Turbellaria. In BANZ Antarctic Research Expedition 1929–1931. Vol. VI, Part 12. Canberra: Government Printing Office, pp. 279–290.Google Scholar
Intergovernmental Oceanographic Commission (IOC) of UNESCO. Search Data. OBIS. Available at: http://iobis.org/mapper/ (accessed 27 October 2013).Google Scholar
Langeron, M. (1949) Précis de Microscopie. Technique–Expérimentation–Diagnostic. Paris: Masson, Libraires de L'académie de Médecine.Google Scholar
Linse, K. (2002) The shelled Magellanic Mollusca: with special reference to biogeographic relations in the Southern Ocean. Liechtenstein: A.R.A. Ganter.Google Scholar
Moore, P.G., MacAlister, H.E. and Taylor, A.C. (1995) The environmental tolerances and behavioural ecology of the sub-Antarctic beach hopper ‘Orchestia’ scutigerula Dana (Crustacea: Amphipoda) from Husvik, South Georgia. Journal of Experimental Marine Biology and Ecology 189, 159–182.Google Scholar
Nurse, F.R. (1963) Marine Tricladida from Macquarie Island. Memoirs of the National Museum of Victoria 26, 157–166.Google Scholar
Peck, L.S., Convey, P. and Barnes, D.K.A. (2006) Environmental constraints on life histories in Antarctic ecosystems: tempos, timings and predictability. Biological Reviews 81, 75–109.Google Scholar
Pugh, P.J.A. and Bartsch, I. (1993) Ecology of the littoral Halacaridae (Acari: Prostigmata) of South Georgia in the sub-Antarctic. Journal of Natural History 28, 75–85.Google Scholar
Pugh, P.J.A. and Davenport, J. (1997) Colonisation vs. disturbance: the effects of sustained ice-scouring on intertidal communities. Journal of Experimental Marine Biology and Ecology 210, 1–21.Google Scholar
Sluys, R. (1986) Taxonomic studies on marine triclads (Turbellaria, Tricladida, Maricola). Hydrobiologia 132, 257–262.Google Scholar
Sluys, R. (1989) A monograph of the marine triclads. Rotterdam & Brookfield: A.A. Balkema.Google Scholar
Sluys, R. and Ball, I.R. (1989) A synopsis of the marine triclads of Australia and New Zealand (Platyhelminthes, Tricladida, Maricola). Invertebrate Taxonomy 2, 915–959.Google Scholar
Sluys, R. and de Vries, E.J. (1988) The aquatic triclads of the Crozet Islands (Platyhelminthes: Tricladida). Zoological Journal of the Linnean Society 94, 203–217.CrossRefGoogle Scholar
Smale, D.A., Barnes, D.K.A. and Fraser, K.P.P. (2007) The influence of depth, site exposure and season on the intensity of iceberg scouring in nearshore Antarctic waters. Polar Biology 30, 769–779.CrossRefGoogle Scholar
Waller, C.I. (2008) Variability in intertidal communities along a latitudinal gradient in the Southern Ocean. Polar Biology 31, 809–816.Google Scholar
Westblad, E. (1952) Turbellaria (excl. Kalyptorhynchia). In Odhner, N.H.J. (ed.) Further zoological results of the Swedish Antarctic Expedition 1901–1903, vol. 4, no. 8. Stockholm: P.A. Norstedt & Söner.Google Scholar