Integumentary uptake of volatile fatty acids by the freshwater oligochaete Tubifex

Hipp, Erich; Mustafa, Tariq; Hoffmann, Klaus H.

doi:10.1007/bf00490402

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…The natural concentration, however, is rarely high because it is rapidly consumed by numerous types of bacteria (Billen and Putman 1978, Ansbaek and Blackburn 1980, Nedwell 1984, Ward and Winfrey 1985. The same high concentrations have been found in the interstitial freshwater of a tubificid worm habitat (Hipp et al 1985). The same high concentrations have been found in the interstitial freshwater of a tubificid worm habitat (Hipp et al 1985).…”

Section: Introductionsupporting

confidence: 77%

Acetate uptake from ambient water by the free-living marine nematodeAdoncholaimus thalassophygas

Riemann

Ernst

1990

Mar. Biol.

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Nematodes belonging to the family Oncholaimidae are known to aggregate at sites of organic pollution. The oncholaimid Adoncholaimus thalassophygas (De Man, 1876), collected from the Weser Estuary, FRG, in 1989, has the capability to take up acetate at naturally occurring concentrations. Under almost axenic conditions, ca 2.3 to 3.0 ng sodium acetate was taken-up per worm within 24 h, when an ambient concentration of 0.33 mmol was offered. The concentration factor was ca 8.5 to 11.1. The results suggest that a highly motile oxybiotic nematode may benefit from the fermentation products of anoxic habitats.

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Section: Introductionsupporting

confidence: 77%

Acetate uptake from ambient water by the free-living marine nematodeAdoncholaimus thalassophygas

Riemann

Ernst

1990

Mar. Biol.

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“…Another foraging strategy may not involve ingestion via the oral cavity but diffusive uptake. T. tubifex can actively take up short-chain organic acids, such as acetate and propionate, through their body wall (Hipp et al, 1985;Sedlmeier and Hoffmann, 1989). The subsequent respiration of these organic acids can account for up to 40 % of T. tubifex energy turnover (Hipp et al, 1986).…”

Section: Potential Diet and Host-microorganism Interactions In Tubificid Wormsmentioning

confidence: 99%

Carbon sources of benthic fauna in temperate lakes across multiple trophic states

et al. 2021

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Abstract. Previous studies have shown that microbially produced methane can be a dominant carbon source of lacustrine sedimentary macrofauna in eutrophic lakes, most likely through grazing on methane-oxidizing bacteria. Here we investigate the contributions of different carbon sources to macrofaunal biomass across five lakes in central Switzerland that range from oligotrophic to highly eutrophic. Macrofaunal communities change with trophic state, with chironomid larvae dominating oligotrophic and tubificid oligochaetes dominating eutrophic lake sediments. The 13C-isotopic data suggest that the average contribution of methane-derived carbon to the biomass of both macrofaunal groups is similar but consistently remains minor, ranging from only ∼1 % in the oligotrophic lake to at most 12 % in the eutrophic lakes. The remaining biomass can be explained by the assimilation of detritus-derived organic carbon. Low abundances of methane-cycling microorganisms in macrofaunal specimens, burrows, and surrounding sediment based on 16S ribosomal RNA (rRNA) gene sequences and copy numbers of genes involved in anaerobic and aerobic methane cycling (mcrA, pmoA) support the interpretation of isotopic data. Notably, 16S rRNA gene sequences of macrofauna, including macrofaunal guts, are highly divergent from those in tubes or sediments. Many macrofaunal specimens are dominated by a single 16S rRNA phylotype of Fusobacteria, α-, β-, γ-, or ε-Proteobacteria, Bacteroidetes, or Parcubacteria. This raises the question of whether dominant lake macrofauna live in so far uncharacterized relationships with detrital organic-matter-degrading bacterial endosymbionts.

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“…Another foraging strategy may not involve ingestion through the oral cavity. T. tubifex actively take up short-chain organic acids, such as acetate and propionate, from their surroundings through their body wall (Hipp et al, 1985;Sedlmeier and Hoffmann, 1989). The subsequent respiration of these organic acids can account for up to 40% of T. tubifex energy turnover 40 (Hipp et al, 1986).…”

Section: Potential Diet and Host-microorganism Interactions In Tubifimentioning

confidence: 99%

Carbon sources of benthic fauna in temperate lakes across multiple trophic states

Fiskal¹,

Anthamatten²,

Deng³

et al. 2020

Preprint

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Abstract. Previous studies have shown that microbially produced methane can be a dominant carbon source of lacustrine sedimentary macrofauna in eutrophic lakes, most likely through grazing on methane-oxidizing bacteria. Here we investigate the contributions of different carbon sources to macrofaunal biomass across five lakes in central Switzerland that range from oligotrophic to highly eutrophic. Macrofaunal communities change with trophic state, with chironomid larvae dominating oligotrophic and tubificid oligochaetes dominating eutrophic lake sediments. 13C-isotopic data suggest that the average contribution of methane-derived carbon to the biomass of both macrofaunal groups is similar, but consistently remains minor, ranging from only ~ 1 % in the oligotrophic lake to at most 12 % in the eutrophic lakes. The remaining biomass can be explained with assimilation of detritus-derived organic carbon. Low abundances of methane cycling microorganisms in macrofaunal specimens, burrows, and surrounding sediment based on 16S ribosomal RNA (rRNA) gene sequences and copy numbers of genes involved in anaerobic and aerobic methane cycling (mcrA, pmoA) support the interpretation of isotopic data. Notably, 16S rRNA gene sequences of macrofauna, including macrofaunal guts, are highly divergent from those in tubes or sediments. Many macrofaunal specimens are dominated by a single 16S rRNA phylotype of Fusobacteria, α-, β-, γ-, or ε-Proteobacteria, Bacteroidetes, or Parcubacteria. This raises the question whether dominant lake macrofauna live in so far uncharacterized relationships with detrital organic matter-degrading bacterial endosymbionts.

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Integumentary uptake of volatile fatty acids by the freshwater oligochaete Tubifex

Cited by 7 publications

References 6 publications

Acetate uptake from ambient water by the free-living marine nematodeAdoncholaimus thalassophygas

Acetate uptake from ambient water by the free-living marine nematodeAdoncholaimus thalassophygas

Carbon sources of benthic fauna in temperate lakes across multiple trophic states

Carbon sources of benthic fauna in temperate lakes across multiple trophic states

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