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The Efficiency With Which Caenorhabditis Briggsae (Rhabditidae) Feeds On the Bacterium, Escherichia Coli

The Efficiency With Which Caenorhabditis Briggsae (Rhabditidae) Feeds On the Bacterium,... THE EFFICIENCY WITH WHICH CAENORHABDITIS BRIGGSAE (RHABDITIDAE) FEEDS ON THE BACTERIUM, ESCHERICHIA COLI BY W. L. NICHOLAS1, A. GRASSIA2 and S. VISWANATHAN1 1) Department of Zoology, Australian National University, Canberra, and 2) Division of Mathematical Statistics, CSIRO, Canberra, Australia The rate of removal of the bacterium E. coli from aqueous suspensions by C. briggsae in feeding has been studied. The decrease in bacteria with time follows a negative exponential equation when bacterial multiplication was restricted and nematode growth was minimal. It was inferred that the feeding activity of the nematodes is maintained at a constant level over a wide range of bacterial concentrations. Other experiments supported the contention that C. briggsae requires dense suspen- sions of bacteria for the maintenance of cultures and gave estimates of the efficiency of conversion of bacterial protoplasm to worm protoplasm. Caenorhabditis briggsae, like many other Rhabditidae, feeds on bacteria. When feeding the oesophagus pumps a suspension of bacteria, ingested with the surrounding medium, through the alimentary canal. The pumping action is too fast to follow clearly by eye and observations of feeding are made more difficult by the mobility of the head. Nonetheless, very detailed studies have been made on the structure http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

The Efficiency With Which Caenorhabditis Briggsae (Rhabditidae) Feeds On the Bacterium, Escherichia Coli

Nicholas, W.L.; Grassia, A.; Viswanathan, S.
Nematologica , Volume 19 (4): 10 – Jan 1, 1973
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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529273X00385
Publisher site
See Article on Publisher Site

Abstract

THE EFFICIENCY WITH WHICH CAENORHABDITIS BRIGGSAE (RHABDITIDAE) FEEDS ON THE BACTERIUM, ESCHERICHIA COLI BY W. L. NICHOLAS1, A. GRASSIA2 and S. VISWANATHAN1 1) Department of Zoology, Australian National University, Canberra, and 2) Division of Mathematical Statistics, CSIRO, Canberra, Australia The rate of removal of the bacterium E. coli from aqueous suspensions by C. briggsae in feeding has been studied. The decrease in bacteria with time follows a negative exponential equation when bacterial multiplication was restricted and nematode growth was minimal. It was inferred that the feeding activity of the nematodes is maintained at a constant level over a wide range of bacterial concentrations. Other experiments supported the contention that C. briggsae requires dense suspen- sions of bacteria for the maintenance of cultures and gave estimates of the efficiency of conversion of bacterial protoplasm to worm protoplasm. Caenorhabditis briggsae, like many other Rhabditidae, feeds on bacteria. When feeding the oesophagus pumps a suspension of bacteria, ingested with the surrounding medium, through the alimentary canal. The pumping action is too fast to follow clearly by eye and observations of feeding are made more difficult by the mobility of the head. Nonetheless, very detailed studies have been made on the structure

Journal

Nematologica – Brill

Published: Jan 1, 1973

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