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Energy budgets for Stentor coeruleus Ehrenberg (Ciliophora)

Citation

Laybourn-Parry, J, Energy budgets for Stentor coeruleus Ehrenberg (Ciliophora), Oecologia, 22, (4) pp. 431-437. ISSN 0029-8549 (1976) [Refereed Article]

DOI: doi:10.1007/BF00345319

Abstract

Growth and feeding rates in Stentor coeruleus fed on Tetrahymena are described in relation to prey concentrations ranging from 10:1-50:1 at 15°C and 20°C. Feeding rate was independent of temperature, but governed by prey concentration. Stentor decreased in size where less than 1,000 μJ were consumed in 24 hrs. A maximum level of growth was attained at 15°C, but not at 20°C within the range of prey concentration offered. Energy budgets, constructed using respiratory data published elsewhere (Laybourn, 1975), are presented. Assimilation efficiencies ranged from 74.4-76.4% at 20°C and 65.1-83.2% at 15°C. Gross growth efficiencies were between 70.9-73.6% at 20°C and 63.7-81.6% at 15°C. Net growth efficiencies were very high, 95.6-96.3% at 20°C and 97.5-97.9% at 15°C. The results are explained and discussed in relation to other Protozoa. © 1976 Springer-Verlag.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and Estuarine Ecology (incl. Marine Ichthyology)
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Philosophy and Religious Studies
Author:Laybourn-Parry, J (Professor Johanna Laybourn-Parry)
ID Code:49394
Year Published:1976
Web of Science® Times Cited:25
Deposited By:Research Division
Deposited On:2007-12-08
Last Modified:2011-08-30
Downloads:0

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