1887

Abstract

was isolated from more than 2300 non-domesticated vertebrate hosts living in Australia. was most prevalent in mammals, less prevalent in birds and uncommon in fish, frogs and reptiles. Mammals were unlikely to harbour if they lived in regions with a desert climate and less likely to have if they lived in the tropics than if they lived in semi-arid or temperate regions. In mammals, the likelihood of isolating from an individual depended on the diet of the host and was less prevalent in carnivores than in herbivores or omnivores. In both birds and mammals, the probability of isolating increased with the body mass of the host. Hosts living in close proximity to human habitation were more likely to harbour than hosts living away from people. The relative abundance of groups A, B1, B2 and D strains in mammals depended on climate, host diet and body mass. Group A strains were uncommon, but were isolated from both ectothermic and endothermic vertebrates. Group B1 strains could also be isolated from any vertebrate group, but were predominant in ectothermic vertebrates, birds and carnivorous mammals. Group B2 strains were unlikely to be isolated from ectotherms and were most abundant in omnivorous and herbivorous mammals. Group D strains were rare in ectotherms and uncommon in endotherms, but were equally abundant in birds and mammals. The results of this study suggest that, at the species level, the ecological niche of is mammals with hindgut modifications to enable microbial fermentation, or in the absence of a modified hindgut, can only establish a population in ‘large-bodied’ hosts. The non-random distribution of genotypes among the different host groups indicates that strains of the four groups may differ in their ecological niches and life-history characteristics.

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2003-12-01
2024-10-06
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References

  1. Ballyk M., Smith H. L. 1999; A model of microbial growth in a plug-flow reactor with wall attachment. Math Biosci 158:95–126
    [Google Scholar]
  2. Ballyk M., Le D., Jones D. A., Smith H. L. 2001; Microbial competition in reactors with wall attachment: a comparison of chemostat and plug flow models. Microb Ecol 41:210–221
    [Google Scholar]
  3. Baltzis B. C., Fredrickson A. G. 1983; Competition of two microbial populations for a single resource in a chemostat when one of them exhibits wall attachment. Biotechnol Bioeng 25:2419–2439
    [Google Scholar]
  4. Caugant D. A., Levin B. R., Selander R. K. 1981; Genetic diversity and temporal variation in the E. coli populations of a human host. Genetics 98:467–490
    [Google Scholar]
  5. Chivers D. J., Langer P. 1994 The Digestive System in Mammals: Food, Form and Function Cambridge: Cambridge University Press;
  6. Clermont O., Bonacorsi S., Bingen E. 2000; Rapid and simple determination of Escherichia coli phylogenetic group. Appl Environ Microbiol 66:4555–4558
    [Google Scholar]
  7. Cooger H. G. 1992 Reptiles and Amphibians of Australia Chatswood, NSW: Reed Books;
  8. Ewing W. H. 1986 Edwards and Ewing's Identification of Enterobacteriaceae , 4th edn. New York: Elsevier;
  9. Freter R., Brickner S., Temme S. 1986; An understanding of colonization resistance of the mammalian large intestine requires mathematical analysis. Microecol Ther 16:147–155
    [Google Scholar]
  10. Gordon D. M., FitzGibbon F. 1999; The distribution of enteric bacteria among Australian mammals. Microbiology 145:2663–2671
    [Google Scholar]
  11. Gordon D. M., Lee J. 1999; The genetic structure of enterica bacteria from Australian mammals. Microbiology 145:2673–2682
    [Google Scholar]
  12. Hartl D. L., Dykhuizen D. E. 1984; The population genetics of Escherichia coli . Annu Rev Genet 18:31–68
    [Google Scholar]
  13. Herzer P. J., Inouye S., Inouye M., Whittam T. S. 1990; Phylogenetic distribution of branched RNA-linked mulitcopy single-stranded DNA among natural isolates of Escherichia coli . J Bacteriol 172:6175–6181
    [Google Scholar]
  14. Hume I. D. 1999 Marsupial Nutrition Cambridge: Cambridge University Press;
  15. Johnson J. R., Delavari P., Kuskowski M., Stell A. L. 2001; Phylogenetic distribution of extraintestinal virulence-associated traits in Escherichia coli . J Infect Dis 183:78–88
    [Google Scholar]
  16. Jones D., Kojouharov H. V., Le D., Smith H. 2002; Bacterial wall attachment in a flow reactor. SIAM J Appl Math 62:1728–1771
    [Google Scholar]
  17. Leclerc H., Mossel A. A., Edberg S. C., Struijk C. B. 2001; Advances in the bacteriology of the coliform group: their suitability as markers of microbial water safety. Annu Rev Microbiol 55:201–234
    [Google Scholar]
  18. Murray B. R., Hume I. D., Dickman C. R. 1995; Digestive tract characteristics of the spinifex hopping-mouse, Notomys alexis and the sandy inland mouse, Pseudomys hermannsburgensis in relation to diet. Aust Mammal 18:93–97
    [Google Scholar]
  19. Ochman H., Selander R. K. 1984; Standard reference strains of Escherichia coli from natural populations. J Bacteriol 157:690–693
    [Google Scholar]
  20. Picard B., Sevali Garcia J., Gouriou S., Duriez P., Brahimi N., Bingen E., Elion J., Denamur E. 1999; The link between phylogeny and virulence in Escherichia coli extra-intestinal infection. Infect Immun 67:546–553
    [Google Scholar]
  21. Pupo G. M., Karaolis D. K. R., Lan R., Reeves P. R. 1997; Evolutionary relationships among pathogenic and nonpathogenic Escherichia coli inferred from multilocus enzyme electrophoresis and mdh sequence studies. Infect Immun 65:2685–2692
    [Google Scholar]
  22. Pupo G. M., Lan R., Reeves P. R. 2000a; Multiple independent origins of Shigella clones of Escherichia coli and convergent evolution of their many characteristics. Proc Natl Acad Sci U S A 97:10567–10572
    [Google Scholar]
  23. Pupo G. M., Lan R., Reeves P. R., Baverstock P. R. 2000b; Population genetics of Escherichia coli in a natural population of native Australian rats. Environ Microbiol 2:594–610
    [Google Scholar]
  24. Rolland K., Lambert-Zechovsky N., Picard B., Denamur E. 1998; Shigella and enteroinvasive Escherichia coli strains are derived from distinct ancestral strains of E. coli . Microbiology 144:2667–2672
    [Google Scholar]
  25. Sears H. J., Brownlee I. 1952; Further observations on the persistence of individual strains of Escherichia coli in the intestinal tract of man. J Bacteriol 63:47–57
    [Google Scholar]
  26. Sears H. J., Brownlee I., Uchiyama J. K. 1950; Persistence of individual strains of Escherichia coli in the intestinal tract of man. J Bacteriol 59:293–301
    [Google Scholar]
  27. Sears H. J., Janes H., Saloum R., Brownlee I., Lamoreaux L. F. 1956; Persistence of individual strains of Escherichia coli in man and dog under varying conditions. J Bacteriol 71:370–372
    [Google Scholar]
  28. Selander R. K., Caugant D. A., Whittam T. S. 1987; Genetic structure and variation in natural populations of Escherichia coli . In Escherichia coli and Salmonella typhimurium: Cellular and Molecular Biology pp 1625–1648 Edited by Neidhardt F. C., Ingraham J. L., Low K. Brooks, Magasanik B., Schaechter M., Umbarger H. E. Washington, DC: American Society for Microbiology;
    [Google Scholar]
  29. Shooter R. A., Bettelheim K. A., Lenox-King S. M. J., O'Farrell S. 1977; Escherichia coli serotypes in the faeces of healthy adults over a period of several months. J Hyg 78:95–98
    [Google Scholar]
  30. Simpson K., Day N. 1996 Field Guide to the Birds of Australia Ringwood, VIC: Viking Penguin Books Australia;
  31. Smith H. L., Waltman P. 1995 The Theory of the Chemostat Cambridge: Cambridge University Press;
  32. Stemmons E. D., Smith H. L. 2000; Competition in a chemostat with wall attachment. SIAM J Appl Math 61:567–595
    [Google Scholar]
  33. Stevens C. E. 1988 Comparative Physiology of the Vertebrate Digestive System Cambridge: Cambridge University Press;
  34. Strahan R. 1995 The Mammals of Australia Chatswood, NSW: Reed Books;
  35. Topiwala H., Hamer G. 1971; Effect of wall growth in steady state continuous culture. Biotechnol Bioeng 13:919–922
    [Google Scholar]
  36. Woodall P. F., Skinner J. D. 1993; Dimensions of the intestine, diet and faecal water loss in some African antelope. J Zool Lond 229:457–471
    [Google Scholar]
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