Nitrogen Flow in a Chemostat Culture of the Rotifer <i>Brachionus plicatilis</i>
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- Aoki Shigeru
- Fisheries Laboratory, Faculty of Agriculture, The University of Tokyo
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- Hino Akinori
- Fisheries Laboratory, Faculty of Agriculture, The University of Tokyo
Bibliographic Information
- Other Title
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- Nitrogen Flow in a Chemostat Culture of the Rotifer Brachionus plicatilis
- Nitrogen Flow in a Chemostat Culture of
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Abstract
Nitrogen flow in a chemostat culture of the rotifer Brachionus plicatilis was measured. It was found that a chemostat could keep the rotifer in a stable condition and were suitable for studying the effect of algal density. The rotifer egested 70-80% of the ingested nitrogen as particulate organic nitrogen (PON) and about 80% of the remaining assimilated nitrogen was utilized for reproduction. Low net growth efficiency (K2) at high algal densities proved “superfluous feeding”. 20% of PON egested was incorporated in the rotifer again by bacteriovory, and 13% of that was remineralized to NH+4 by bacteria. The PON was accumulated as a suspended or attached form in the culture vessel, which might cause an unstable environment. For a safety culture of the rotifer, removal of PON is an effective counter plan.
Journal
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- Fisheries science
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Fisheries science 62 (1), 8-14, 1996
The Japanese Society of Fisheries Science
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Details
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- CRID
- 1390001204429492608
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- NII Article ID
- 130003902838
- 10004864608
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- NII Book ID
- AA10993718
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- NDL BIB ID
- 3929037
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- ISSN
- 09199268
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed