In:
Antarctic Science, Cambridge University Press (CUP), Vol. 22, No. 3 ( 2010-06), 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.
Type of Medium:
Online Resource
ISSN:
0954-1020
,
1365-2079
DOI:
10.1017/S0954102010000106
Language:
English
Publisher:
Cambridge University Press (CUP)
Publication Date:
2010
detail.hit.zdb_id:
2104104-0
detail.hit.zdb_id:
1009128-2
SSG:
12
SSG:
13
SSG:
14
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