Journal article
Ingestion and assimilation of carbon from cellulolytic bacteria and heterotrophic flagellates by the mussels Geukensia demissa and Mytilus edulis (Bivalvia, Mollusca)
Aquatic microbial ecology : international journal, v 11(3)
01 Dec 1996
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We super(14)C-labeled cellulolytic bacteria and 3 species of bacterivorous nanoflagellates and fed these cultured organisms to 2 species of intertidal mussels, Geukensia demissa and Mytilus edulis, using a pulse-chase experimental design under controlled laboratory conditions. Ingestion and assimilation of C from these microheterotrophs by mussels were calculated from measured rates of defecation, respiration, excretion, and tissue incorporation. The proportion of available C ingested by G. demissa did not differ significantly among bacteria (39%), heterotrophic flagellates (58%), or the unicellular algae Isochrysis galbana (66%), which was used as a reference diet. In contrast, M. edulis ingested a significantly lower proportion (19%) of the small bacteria (<1 mu m in diameter) than the larger (3 to 5 mu m diameter) heterotrophic flagellates (58%). The efficiency with which G. demissa assimilated C from I. galbana (77%) was significantly greater than that from either bacteria (42%) or heterotrophic flagellates (44%). M. edulis assimilated bacterial C with significantly lower efficiency (21%) than C from heterotrophic flagellates (62%). These results indicate that heterotrophic flagellates can contribute to the C requirements of both G. demissa and M. edulis; however, only G. demissa is capable of assimilating a considerable amount of C from bacteria.
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Details
- Title
- Ingestion and assimilation of carbon from cellulolytic bacteria and heterotrophic flagellates by the mussels Geukensia demissa and Mytilus edulis (Bivalvia, Mollusca)
- Creators
- D A KreegerRIE Newell
- Publication Details
- Aquatic microbial ecology : international journal, v 11(3)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES)
- Web of Science ID
- WOS:A1996WD15000002
- Scopus ID
- 2-s2.0-0001615331
- Other Identifier
- 991019173776704721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Ecology
- Marine & Freshwater Biology
- Microbiology