Bacterial residence time in the intestine of Caenorhabditis elegans

in Nematology
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Abstract

We fed adult Caenorhabditis elegans fluorescent microspheres mixed with their Escherichia coli food and then measured the total fluorescence of expelled faeces as a function of time after transfer to unlabelled bacteria. Intestinal clearance obeys a simple first-order decay or dilution curve: we estimate that 43 ± 10% of the maximum intestinal volume is expelled in each defecation and the average residence time of a bead (by inference, a bacterium) is less than 2 min. Our results raise questions how bacteria can be sufficiently digested in this brief period to provide energy and material to sustain the high rate of C. elegans oocyte production.

Bacterial residence time in the intestine of Caenorhabditis elegans

in Nematology

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