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Regeneration of phosphorus and nitrogen by four species of heterotrophic nanoflagellates feeding on three nutritional states of a single bacterial strain.

Eccleston-Parry, Jacqueline and Leadbeater, B. S. C. (1995) Regeneration of phosphorus and nitrogen by four species of heterotrophic nanoflagellates feeding on three nutritional states of a single bacterial strain. Applied and Environmental Microbiology, 61 (3). pp. 1033-1038. ISSN 0099-2240

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Abstract

Three physiological states of a single bacterial strain, namely, balanced, phosphorus-rich, and nitrogen-rich bacteria, were obtained by culturing a bacterial strain in chemostats under three different nutrient regimens. Each was shown to be distinctly different in elemental composition with respect to C/N/P ratio. These bacteria were fed to four species of heterotrophic nanoflagellates in batch culture grazing experiments, and the percent regeneration efficiencies of bacterium-bound nitrogen and phosphorus by the flagellates were compared. All flagellate species regenerated comparable amounts of nitrogen, which was thought to be due to their similar internal C/N ratios. There was, however, interspecies variation with regard to phosphorus regeneration: the two faster-growing species (Paraphysomonas imperforata and Bodo designis) released significantly more phosphorus than the two slower-growing species (Stephanoeca diplocostata and Jakoba libera). The observed differences were thought to have been influenced by a combination of life cycle strategies and internal C/P ratios.

Item Type: Article
Journal or Publication Title: Applied and Environmental Microbiology
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Departments: Faculty of Health and Medicine > Biomedical & Life Sciences
ID Code: 22256
Deposited By: ep_ss_importer
Deposited On: 06 Feb 2009 16:32
Refereed?: No
Published?: Published
Last Modified: 09 Apr 2014 20:26
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/22256

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