Evidence map›Paper›PMID 27484343›Full record

ArticleMicrobial ecology2016

The Interplay Between Predation, Competition, and Nutrient Levels Influences the Survival of Escherichia coli in Aquatic Environments.

P Wanjugi, G A Fox, V J Harwood

Abstract read
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In one paragraph

Article in Microbial ecology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Microorganisms · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Difficulties in the Modeling ofMolecules (Basel, Switzerland) · 2022
    Article
  10. Article
  11. Selective survival ofApplied and environmental microbiology · 2021
    Article
  12. Persistence and Decay of Fecal Microbiota in Aquatic Habitats.Microbiology and molecular biology reviews : MMBR · 2019
    Review
  13. Article
  14. Relationships between Microbial Indicators and Pathogens in Recreational Water Settings.International journal of environmental research and public health · 2018
    Review
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

P WanjugiDepartment of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, SCA 110, Tampa, FL, 33620, USA.
G A FoxDepartment of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, SCA 110, Tampa, FL, 33620, USA.
V J HarwoodDepartment of Integrative Biology, University of South Florida, 4202 East Fowler Avenue, SCA 110, Tampa, FL, 33620, USA. vharwood@usf.edu.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nutrient levels, competition from autochthonous microorganisms, and protozoan predation may all influence survival of fecal microorganisms as they transition from the gastrointestinal tract to aquatic habitats. Although Escherichia coli is an important indicator of waterborne pathogens, the effects of environmental stressors on its survival in aquatic environments remain poorly understood. We manipulated organic nutrient, predation, and competition levels in outdoor microcosms containing natural river water, sediments, and microbial populations to determine their relative contribution to E. coli survival. The activities of predator (protozoa) and competitor (indigenous bacteria) populations were inhibited by adding cycloheximide or kanamycin. We developed a statistical model of E. coli density over time that fits with the data under all experimental conditions. Predation and competition had significant negative effects on E. coli survival, while higher nutrient levels increased survival. Among the main effects, predation accounted for the greatest variation (40 %) compared with nutrients (25 %) or competition (15 %). The highest nutrient level mitigated the effect of predation on E. coli survival. Thus, elevated organic nutrients may disproportionately enhance the survival of E. coli, and potentially that of other enteric bacteria, in aquatic habitats.

Indexed as

Microbial InteractionsNutritional Physiological PhenomenaPredatory BehaviorAnimalsAnti-Bacterial AgentsBacteriaBiotaCycloheximideEcosystemEnvironmental MicrobiologyEnvironmental MonitoringEscherichia coliFecesFresh WaterGeologic SedimentsKanamycinAnti-Bacterial AgentsCycloheximideKanamycinBiotic interactionsDecayE. coliFecal indicator bacteriaPredator–prey

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.