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

Siliceous scales of filose-amoebae (Pompholyxophryidae, Rotosphaerida) from deep Southern Ocean sediments, including first records for the Southern Hemisphere
Siliceous scales of filose-amoebae (Pompholyxophryidae, Rotosphaerida) from deep Southern Ocean sediments, including first records for the Southern Hemisphere
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.
Antarctica, Biogeography, Heliozoa, Scale-bearing protists, South Sandwich Islands, Southern Hemisphere
0722-4060
945-950
Esteban, G.F.
b2d2d115-4fd0-469b-b565-a2bcefa6a8eb
Gooday, A.J.
d9331d67-d518-4cfb-baed-9df3333b05b9
Clarke, K.J.
8f1c5964-0af1-42f4-bfa9-78fc89702914
Esteban, G.F.
b2d2d115-4fd0-469b-b565-a2bcefa6a8eb
Gooday, A.J.
d9331d67-d518-4cfb-baed-9df3333b05b9
Clarke, K.J.
8f1c5964-0af1-42f4-bfa9-78fc89702914

Esteban, G.F., Gooday, A.J. and 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. (doi:10.1007/s00300-007-0280-4).

Record type: Article

Abstract

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.

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More information

Published date: June 2007
Keywords: Antarctica, Biogeography, Heliozoa, Scale-bearing protists, South Sandwich Islands, Southern Hemisphere

Identifiers

Local EPrints ID: 49681
URI: http://eprints.soton.ac.uk/id/eprint/49681
ISSN: 0722-4060
PURE UUID: 5a038c71-7fe6-4e6f-a1ce-cb1a438d5742

Catalogue record

Date deposited: 22 Nov 2007
Last modified: 15 Mar 2024 09:57

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Contributors

Author: G.F. Esteban
Author: A.J. Gooday
Author: K.J. Clarke

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