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Consumption Rates of Six Species of Marine Benthic Naked Amoebae (Gymnamoebia) From Sediments in The Clyde Sea Area

Published online by Cambridge University Press:  11 May 2009

Helen Butler  and
Andrew Rogerson
Helen Butler
Affiliation:
University Marine Biological Station Millport, Isle of Cumbrae, KA28 OEG, Scotland.
Andrew Rogerson
Affiliation:
Department of Chemistry and Chemical Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA.
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Extract

Six species of naked amoebae, ranging in size from 45 to 3258 μm3, were isolated from benthic sediments of the Clyde Sea area. The number of fluorescently labelled bacteria (FLB) consumed by these amoebae was determined at 5, 10, 15 and 20°C. Consumption rates varied markedly, ranging from 0·2 to 194·7 bacteria h−1 (equivalent to 0·16–155·8 μim3 bacterial biomass). However, only some of these values were considered to be optimal; several of the uptake values were too low to account for the measured growth rates of amoebae. Using the optimal consumption rate data, the mean specific rates increased from 0·042 bacteria h−1 μm3 at 5°C to 0·131 bacteria h−1 μm−3 at 20°C. This is the first study to detail the ingestion rates of a range of bacterivorous marine gymnamoebae.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 77 , Issue 4 , November 1997 , pp. 989 - 997
Copyright
Copyright © Marine Biological Association of the United Kingdom 1997

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