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  Methane-derived carbon flows through methane-oxidizing bacteria to higher trophic levels in aquatic systems

Deines, P., Bodelier, P. L. E., & Eller, G. (2007). Methane-derived carbon flows through methane-oxidizing bacteria to higher trophic levels in aquatic systems. Environmental Microbiology, 9(5), 1126-1134. doi:10.1111/j.1462-2920.2006.01235.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D7B6-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D7B7-C
Genre: Journal Article

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deines2_2007.pdf (Publisher version), 262KB
 
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 Creators:
Deines, Peter1, Author              
Bodelier, Paul L. E., Author
Eller, Gundula1, Author              
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1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

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 Abstract: Recent investigations have shown that biogenic methane can be a carbon source for macro invertebrates in freshwater food webs. Stable carbon isotopic signatures, used to infer an organism's food source, indicated that methane can play a major role in the nutrition of chironomid larvae. However, the pathway of methane-derived carbon into invertebrate biomass is still not confirmed. It has been proposed that chironomid larvae ingest methane-oxidizing bacteria (MOB), but this has not been experimentally demonstrated to date. Using C-13-labelled methane we could show for the first time that chironomid larvae assimilate methane-derived carbon through MOB. Chironomid larval biomass was significantly C-13-enriched after dwelling for 10 days in lake sediment enriched with labelled methane. Moreover, phospholipid fatty acids diagnostic for MOB were detected in larval tissue and were significantly C-13-enriched, which encompasses the C-13-Uptake predicted for a methane-based nutrition. Additionally, chironomid larvae fed on sediment and water-column derived MOB biomass.

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Language(s): eng - English
 Dates: 2007-05
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: eDoc: 317318
DOI: 10.1111/j.1462-2920.2006.01235.x
Other: 2543/S 38691
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Title: Environmental Microbiology
Source Genre: Journal
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Pages: - Volume / Issue: 9 (5) Sequence Number: - Start / End Page: 1126 - 1134 Identifier: ISSN: 1462-2912