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Siliceous scales of filose-amoebae (Pompholyxophryidae, Rotosphaerida) from deep Southern Ocean sediments, including first records for the Southern Hemisphere

Esteban, G.F.; Gooday, A.J.; Clarke, K.J.. 2007 Siliceous scales of filose-amoebae (Pompholyxophryidae, Rotosphaerida) from deep Southern Ocean sediments, including first records for the Southern Hemisphere. Polar Biology, 30 (7). 945-950. 10.1007/s00300-007-0280-4

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Abstract/Summary

The world of protists remains largely unexplored. A thorough electron-microscopic investigation of a few microlitres of deep-sea sediment from 2,964 m water depth near the South Sandwich Islands (Southern Ocean) revealed siliceous scales of filose-amoeba protist species, two of which have not been reported previously from Antarctica or from elsewhere in the Southern Hemisphere. However, all the species are known from other oceans and, in one case, from freshwater habitats. The Antarctic protistan scales belong to four species of filose amoebae: Pinaciophora fluviatilis Greef 1869, Pinaciophora denticulata Thomsen 1978, Pinaciophora multicosta Thomsen 1978 and Rabdiaster reticulata (Thomsen 1979) Mikrjukov 1999 nov. comb. Our study shows that (1) none of the species has been recorded from the Australasian biogeograpical region, (2) Pinaciophora multicosta and Rabdiaster reticulata are new records for the Southern Ocean and for the Southern Hemisphere as a whole, (3) prior to this investigation, Pinaciophora multicosta had been reported once only, from the Baltic Sea (Europe). These results highlight the problem of undersampling in the study of the global distribution of protists.

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1007/s00300-007-0280-4
Programmes: CEH Programmes pre-2009 publications > Biodiversity
NOC Programmes
CEH Sections: Pywell
ISSN: 0722-4060
Format Availability: Electronic, Print
Additional Information. Not used in RCUK Gateway to Research.: The original publication is available at www.springerlink.com
Additional Keywords: Antarctica, biogeography, Heliozoa, scale-bearing protists, South Sandwich Islands, Southern Hemisphere
NORA Subject Terms: Marine Sciences
Biology and Microbiology
Ecology and Environment
Date made live: 09 Aug 2007 10:52
URI: http://nora.nerc.ac.uk/id/eprint/701

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