Abstract
The pennatulacean genus Malacobelemnon has previously been considered to be distributed in the Western Indian and western Pacific Oceans, with one described species and another possible undescribed species from South Africa. An undescribed shallow-water species attributable to this Kophobelemnidae genus has been collected from the Antarctic region (King George, South Shetland Islands). The present paper reports this discovery, providing the description and illustrations of the new species, Malacobelemnon daytoni n. sp. Some of the characters previously considered in the genus Malacobelemnon should be slightly modified to include the new Antarctic species. The general colony shape, the distribution of siphonozooids, number of longitudinal autozooids rows, and the length and shape of the section of axis are the main characters used to distinguish the new species from the other in the genus M. stephensoni Tixier-Durivault 1965. From a bathymetric point of view, Malacobelemnon daytoni n. sp. is one of the shallowest pennatulacean species recorded, being an important contribution to the shallow-water Antarctic fauna.
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References
Bayer FM (1961) The shallow-water Octocorallia of the West Indian region: a manual for marine biologists. Stud fauna Curaçao Caribbean Islands 12:1–373
Bayer FM, Grasshoff M, Verseveldt J (1983) Illustrated trilingual glossary of morphological and anatomical terms applied to Octocorallia. E.J. Brill/Dr Backhuys, Leiden
de la Vega SG (2000) Antártida. Las leyes entre las costas y el mar. Serie–Explorando Nuestra Naturaleza. Contacto Silvestre Ediciones, Buenos Aires
Hickson SJ (1916) The Pennatulacea of the Siboga Expedition, with a general survey of the order. Siboga Exped Monogr 77(14):1–265
Kükenthal W (1915) Pennatularia. Das Tierreich. Verlag von R. Friedländer und Sohn, Berlin
Kükenthal W, Broch H (1911) Pennatulacea. Wiss Ergebn Deutschen Tiefsee-Expedition “Valdivia” 13(1)2:113–576
López-González PJ, Williams GC (2002) A new genus and species of sea pen (Octocorallia: Pennatulacea: Stachytilidae) from the Antarctic Peninsula. Invertebr Syst 16:919–929. doi:10.1071/IT01027
López-González PJ, Gili JM, Williams GC (2001) New records of Pennatulacea (Anthozoa: Octocorallia) from the African Atlantic coast, with description of a new species and a zoogeographic analysis. Sci Mar 65(1):59–74. doi:10.3989/scimar.2001.65n159
López-González PJ, Gili JM, Williams GC (2000) On some veretillid pennatulaceans from the eastern Atlantic and western Pacific Oceans (Anthozoa: Octocorallia), with a review of the genus Cavernularia Valenciennes and descriptions of the new taxa. J Zool (Lond) 250:201–216
Sahade R, Tatián M, Kowalke J, Kühne S, Esnal GB (1998) Benthic faunal association on soft substrates at Potter Cove, King George Island, Antarctica. Polar Biol 19:85–91. doi:10.1007/s003000050218
Sahade R, Tarantelli S, Tatían M, Mercuri G (2008) Benthic community shifts: a possible linkage to climate change? Ber Polarforsch 571:331–337
Schloss IR, Ferreyra GA, Atencio A, González O, Fuentes V, Tosonotto G, Sahade R, Tatián M, Abele D (2008) Long-term hydrographic conditions and climate trends in Potter Cove. Ber Polarforsch 571:382–389
Soong K (2005) Reproduction and colony integration of the sea pen Virgularia juncea. Mar Biol (Berl) (146):1103–1109. doi:10.1007/s00227-004-1509-1
Tixier-Durivault A (1965) Quelques octocoralliaires australiens. Bull Mus natn Hist Nat Paris (2) 37(4):705–716
von Kölliker RA (1880) Report on the Pennatulida dredged by H.M.S. Challenger during the years 1873–1876. Rep Scient Res Voyage of HMS. Challenger 1873–76. Zoology 1(2):1–41
Williams GC (1989) The pennatulacean genus Cavernularia Valenciennes (Octocorallia: Veretillidae). Zool J Linn Soc Lond 95(4):285–310. doi:10.1111/j.1096-3642.1989.tb02313.x
Williams GC (1990) The Pennatulacea of southern Africa (Coelenterata, Anthozoa). Ann S Afr Mus 99(4):31–119
Williams GC (1993) Biotic diversity, biogeography, and phylogeny of pennatulacean octocorals associated with coral reefs in the Indo-Pacific. Proceedings of the 7th international coral reef symposium, vol 2, pp 729–735
Williams GC (1995) Living genera of sea pens (Coelenterata: Octocorallia: Pennatulacea): illustrated key and synopses. Zool J Linn Soc Lond 113:93–140. doi:10.1111/j.1096-3642.1995.tb00929.x
Williams GC (1997) Preliminary assessment of the phylogeny of Pennatulacea (Anthozoa: Octocorallia), with a reevaluation of Ediacaran frond-like fossils, and a synopsis of the history of evolutionary thought regarding the sea pens. Proceedings of the 6th international conference on coelenterate biology, pp 497–509
Acknowledgments
We thank the members of the Jubany Polar station, especially the divers who assisted with the collection of the material examined here. Special thanks are addressed to Ricardo Sahade and Marcos Tatián for their continuous support with material, information and direct observations of the benthic fauna at Potter Cove (King George Island). Guillermo Mercuri (Instituto Antártico Argentino) provided the underwater photograph of a living specimen in Fig. 2. The authors are also thankful for comments and suggestions given by the Editor, Dr. Gary Williams and the two anonymous referees. Mr. Tony Krupa is thanked for reviewing the English version.
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López-González, P.J., Gili, JM. & Fuentes, V. A new species of shallow-water sea pen (Octocorallia: Pennatulacea: Kophobelemnidae) from Antarctica. Polar Biol 32, 907–914 (2009). https://doi.org/10.1007/s00300-009-0591-8
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DOI: https://doi.org/10.1007/s00300-009-0591-8