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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, Swadling, KM, Pitman, T and Burton, HR 1997 , 'Overwintering populations of Mesodinium rubrum (Ciliophora: Haptorida) in lakes of the Vestfold Hills, East Antarctica' , Polar Biology, vol. 17 , pp. 175-179 , doi: 10.1007/s003000050119.

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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
Authors/Creators:Gibson, JAE and Swadling, KM and Pitman, T and Burton, HR
Keywords: Mesodinium rubrum, Vestfold Hills, Antarctica, lakes, biogeography, winter
Journal or Publication Title: Polar Biology
DOI / ID Number: 10.1007/s003000050119
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