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Overwintering populations of Mesodinium rubrum (Ciliophora: Haptorida) in lakes of the Vestfold Hills, East Antarctica

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Gibson, JAE and Swadling, KM and Pitman, T and Burton, HR (1997) Overwintering populations of Mesodinium rubrum (Ciliophora: Haptorida) in lakes of the Vestfold Hills, East Antarctica. Polar Biology, 17. pp. 175-179.

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Abstract

The autotrophic ciliate Mesodinium rubrum
Lohmann was observed during winter and spring in
saline lakes ranging in salinity from 2 to 78& in the
Vestfold Hills, Antarctica. The ciliate remained active
during winter, and contained chlorophyll even though
the level of light available for photosynthesis was
minimal. No evidence of encystment as a means of
survival during winter was observed. A seasonal study
in one of the lakes, Ace Lake, revealed that M. rubrum
was present throughout the year at abundances
ranging from 1]104 to 3.5]105 cells l~1. During the
winter period, when little light penetrated the lakeÕs
ice cover, cells were most common immediately under
the ice at 2 m, where cell numbers were typically
8]104 cells l~1.

Item Type: Article
Keywords: Mesodinium rubrum, Vestfold Hills, Antarctica, lakes, biogeography, winter
Journal or Publication Title: Polar Biology
Page Range: pp. 175-179
Identification Number - DOI: 10.1007/s003000050119
Additional Information:

The original publication is available at www.springerlink.com

Date Deposited: 21 Feb 2007
Last Modified: 18 Nov 2014 03:13
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