Document Detail


Survival of Campylobacter jejuni in water: effect of grazing by the freshwater crustacean Daphnia carinata (Cladocera).
MedLine Citation:
PMID:  16151090     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Environmental studies of the human-pathogenic bacterium Campylobacter jejuni have focused on linking distributions with potential sources. However, in aquatic ecosystems, the abundance of C. jejuni may also be regulated by predation. We examine the potential for grazing by the freshwater planktonic crustacean Daphnia carinata to reduce the survival of C. jejuni. We use a system for measuring grazing and clearance rates of D. carinata on bacteria and demonstrate that D. carinata can graze C. jejuni cells at a rate of 7% individual(-1) h(-1) under simulated natural conditions in the presence of an algal food source. We show that passage of C. jejuni through the Daphnia gut and incorporation into fecal material effectively reduces survival of C. jejuni. This is the first evidence to suggest that grazing by planktonic organisms can reduce the abundance of C. jejuni in natural waters. Biomanipulation of planktonic food webs to enhance Daphnia densities offers potential for reducing microbial pathogen densities in drinking water reservoirs and recreational water bodies, thereby reducing the risk of contracting water-borne disease.
Authors:
M Schallenberg; P J Bremer; S Henkel; A Launhardt; C W Burns
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Applied and environmental microbiology     Volume:  71     ISSN:  0099-2240     ISO Abbreviation:  Appl. Environ. Microbiol.     Publication Date:  2005 Sep 
Date Detail:
Created Date:  2005-09-09     Completed Date:  2005-11-01     Revised Date:  2013-06-07    
Medline Journal Info:
Nlm Unique ID:  7605801     Medline TA:  Appl Environ Microbiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5085-8     Citation Subset:  IM    
Affiliation:
Department of Zoology, University of Otago, P.O. Box 56, Dunedin, New Zealand. marc.schallenberg@stonebow.otago.ac.nz
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MeSH Terms
Descriptor/Qualifier:
Animals
Behavior, Animal
Campylobacter jejuni / growth & development*
Colony Count, Microbial
Culture Media
Daphnia / growth & development,  physiology*
Feces / microbiology
Feeding Behavior*
Fresh Water / microbiology*
Chemical
Reg. No./Substance:
0/Culture Media
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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