Role of Nematode-Bacterial Interactions in Heterotrophic Systems with Emphasis on Sewage Sludge Decomposition

Abrams, B. I.; Mitchell, Myron J.

doi:10.2307/3544657

Cited by 62 publications

(38 citation statements)

References 23 publications

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“…This pattern was observed by several authors after incubating micro-organisms in a microcosm (Abrams & Mitchell 1980, Anderson et al 1981, Findlay & Tenore 1982. In the beginning of the Arrow indicates the beginning of the steady state period experiment, the high bacterial activity is probably a result of the large quantity of dissolved organic matter (DOM) released from the detritus after wetting the sediment.…”

Section: Discussionmentioning

confidence: 78%

“…CO2 production and O2 consumption were measured regularly during the course of the experiment using gas chromatography (Mitchell 1973, Abrams & Mitchell 1980). The petri dishes were incubated at 20 "C, in the dark, in an air-tight chamber (20 ml) for l to 4 h (dependent on the CO2 production in the dish).…”

Section: Methodsmentioning

confidence: 99%

“…Firstly, removal of senescent bacterial cells by grazers might stimulate bacterial growth by keeping the bacterial population active (Abrams & Mitchell 1980). Secondly, Riemann & Schrage (1978) suggested that mucus produced by nematodes provides a rich food source for bacteria resulting in increased bacterial growth.…”

Section: Introductionmentioning

confidence: 99%

“…Secondly, Riemann & Schrage (1978) suggested that mucus produced by nematodes provides a rich food source for bacteria resulting in increased bacterial growth. Bioturbation has been suggested as a third mechanism by which nematodes stimulate bacterial activity (Abrams & Mitchell 1980, Herrnan & Vranken 1988. Bioturbation is the process resulting from the mixing activities of benthic organisms (Berner 1980).…”

Section: Introductionmentioning

confidence: 99%

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Experimental evidence for the role of bioturbation by the marine nematode Diplolaimella dievengatensis in stimulating the mineralization of Spartina anglica detritus

Alkemade¹,

Wielemaker²,

Jong³

et al. 1992

Mar. Ecol. Prog. Ser.

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The effect of the bacterivorous nematode Diplolaimella dievengatensis on the diffusion of oxygen into sediment and the CO, production of Spartina anglica detritus was examined in a laboratory experiment. Diffusion coefficients were calculated from measurements of both 0, consumption, using gas chromatography, and O2 micro-gradients, using micro-electrodes. After a transient state of about 10 d the diffusion and consumption of oxygen stabihzed and approach.ed steady state. In treatments with nematodes O2 consumption and CO2 production were 74 % higher than in controls. In treatments with nematodes the apparent d~ffusion coefficient of oxygen was 40 to 70 % higher than the molecular diffusion coefficient due to nematode activity. Since the increases of CO, production and of the diffusion of oxygen in the presence of nematodes were of the same magnitude, we conclude that the enhanced turnover time of Spartina detritus was largely dependent on the bioturbation activity of the nematodes.

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Section: Discussionmentioning

confidence: 78%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Experimental evidence for the role of bioturbation by the marine nematode Diplolaimella dievengatensis in stimulating the mineralization of Spartina anglica detritus

Alkemade¹,

Wielemaker²,

Jong³

et al. 1992

Mar. Ecol. Prog. Ser.

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“…Experimental studies point to an important contribution of nematodes in stimulating the breakdown of detritus (Abrams and Mitchell 1980;Findlay and Tenore 1982;Tietjen 1980). However, more recent observations seem to question this aspect too, at least for conditions of high detritus stocks (Alongi 1985a, b).…”

mentioning

confidence: 99%

Studies of the life-history and energetics of marine and brackish-water nematodes

1988

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Summary. Aspects of the demography of Monhystera disjuncta were investigated at different temperatures (in agnotobiotic cultures) and in different feeding conditions (monoxenic cultures with different bacterial strains, and different densities in the feeding suspension with one strain). Embryonic development time, minimum generation time, egg deposition rate and adult longevity depend on temperature, quality and quantity of food offered. Body mass at maturity is an allometric function of food density. It is shown that a previously inferred selectivity in food uptake is an artifact of culture conditions, pH buffering and addition of sterols permit culture of the species on a wide variety of bacterial strains. M. disjuncta is less well adapted to take advantage of high food density than are nematodes from polysaprobic environments. The animals channel surplus energy intake into a larger body mass, without being able to increase their rate of population growth accordingly.

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Advances in Microbial Ecology

1982

Advances in Microbial Ecology

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Role of Nematode-Bacterial Interactions in Heterotrophic Systems with Emphasis on Sewage Sludge Decomposition

Cited by 62 publications

References 23 publications

Experimental evidence for the role of bioturbation by the marine nematode Diplolaimella dievengatensis in stimulating the mineralization of Spartina anglica detritus

Experimental evidence for the role of bioturbation by the marine nematode Diplolaimella dievengatensis in stimulating the mineralization of Spartina anglica detritus

Studies of the life-history and energetics of marine and brackish-water nematodes

Advances in Microbial Ecology

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