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An unusual spine-bearing Pinnularia species from the Antarctic Livingston Island (South Shetland Islands)


Van de Vijver, B and Agius, JT and Gibson, JAE and Quesada, A, An unusual spine-bearing Pinnularia species from the Antarctic Livingston Island (South Shetland Islands), Diatom Research, 24, (2) pp. 431-441. ISSN 0269-249X (2009) [Refereed Article]

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Copyright Statement

Copyright 2009 International Society for Diatom Research

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DOI: doi:10.1080/0269249X.2009.9705812


A new spine-bearing Pinnularia species, Pinnularia gemella sp. nov., is described from a sediment core taken on the Antarctic Livingston Island (South Shetland Islands, southern Atlantic Ocean). The morphology of this species was examined using scanning electron microscopy. The species is easily recognizable by the presence of a continuous row of small, spathulate spines on one side of the valve. Using these interlocking spines, the species forms small colonies with the frustules lying in juxtaposition. The morphology and colonial form of the new species is compared to all other spine-bearing species such as P. sofia Van de Vijver & Le Cohu andlor colonial species such as P. cardinaliculus (A. Schmidt) Cleve. The ecology of the new species is derived from the ecological preferences of the associated flora.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Evolutionary Biology
Research Field:Animal Systematics and Taxonomy
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Antarctic and Sub-Antarctic Flora, Fauna and Biodiversity
UTAS Author:Agius, JT (Miss Janelle Agius)
UTAS Author:Gibson, JAE (Dr John Gibson)
ID Code:61003
Year Published:2009
Web of Science® Times Cited:11
Deposited By:TAFI - Marine Research Laboratory
Deposited On:2010-02-24
Last Modified:2010-05-25

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