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Title

Morphologic and molecular diversity of the foraminiferal genus Globocassidulina in Admiralty Bay, King George Island

Authors
Majewski, Wojciech
Published in Antarctic Science. 2010, vol. 22, no. 3, p. 271-281
Abstract Four distinctive morphological types can be found among living Globocassidulina in surface sediments of Admiralty Bay (King George Island, South Shetland Islands). The molecular analysis of the SSU and ITS rDNA indicates that they are monospecific and belong to Globocassidulina biora, except for minute forms from deeper than 200 m water depth which probably represent G. subglobosa. The morphological types of G. biora that show doubled or branched apertures, varied test size and shape as well as colour of cytoplasm, represent populations at different stages of ontogenetic development. However, the variability among large G. biora from the same locations is difficult to comprehend. It seems probable that G. biora is the only recent, large, shallow water Globocassidulina represented throughout the Antarctica, while G. crassa is typical for the Magellan region.
Keywords AntarcticaBenthic foraminiferaGlobocassidulina bioraRDNA
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Research group Open Access - Licence nationale Oxford University Press
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MAJEWSKI, Wojciech, PAWLOWSKI, Jan Wojciech. Morphologic and molecular diversity of the foraminiferal genus Globocassidulina in Admiralty Bay, King George Island. In: Antarctic Science, 2010, vol. 22, n° 3, p. 271-281. https://archive-ouverte.unige.ch/unige:101727

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Deposited on : 2018-01-29

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