| Range |
wild animals 30%: farm animals 14%: zoo animals 11 %
|
| Organism |
Bacteria Escherichia coli |
| Reference |
Tenaillon O, Skurnik D, Picard B, Denamur E. The population genetics of commensal Escherichia coli. Nat Rev Microbiol. 2010 Mar8(3):207-17. doi: 10.1038/nrmicro2298 p.212 right column 3rd paragraphPubMed ID20157339
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| Primary Source |
[7] Gordon DM, Cowling A. The distribution and genetic structure of Escherichia coli in Australian vertebrates: host and geographic effects. Microbiology. 2003 Dec149(Pt 12):3575-86 DOI: 10.1099/mic.0.26486-0 [39] Ochman H, Selander RK. Standard reference strains of Escherichia coli from natural populations. J Bacteriol. 1984 Feb157(2):690-3 [85] Escobar-Páramo P et al., Identification of forces shaping the commensal Escherichia coli genetic structure by comparing animal and human isolates. Environ Microbiol. 2006 Nov8(11):1975-84 DOI: 10.1111/j.1462-2920.2006.01077.x [102] Baldy-Chudzik K, Mackiewicz P, Stosik M. Phylogenetic background, virulence gene profiles, and genomic diversity in commensal Escherichia coli isolated from ten mammal species living in one zoo. Vet Microbiol. 2008 Sep 18 131(1-2):173-84. doi: 10.1016/j.vetmic.2008.02.019PubMed ID14663089, 6363394, 17014496, 18423907
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| Method |
Primary source [7] abstract: "Escherichia coli was isolated from more than 2300 non-domesticated vertebrate hosts living in Australia." Primary source [39] abstract: "A set of 72 reference strains of Escherichia coli isolated from a variety of hosts and geographical locations has been established for use in studies of variation and genetic structure in natural populations. The strains, which have been characterized by multilocus enzyme electrophoresis, are representative of the range of genotypic variation in the species as a whole." Primary source [85] abstract: "To identify forces shaping the Escherichia coli intraspecies ecological structure, [investigators] have characterized in terms of phylogenetic group (A, B1, D and B2) belonging, presence/absence of extraintestinal virulence genes (pap, sfa, hly and aer) and intra-host phylotype diversity a collection of 1898 commensal isolates originating from 387 animals (birds and mammals) sampled in the 1980s and the 2000s. These data have been compared with 760 human commensal isolates, sampled from 152 healthy subjects in the 2000s, and analysed with the same approach." Primary source [102] abstract: "Three hundred commensal Escherichia coli recovered from healthy herbivorous, carnivorous, and omnivorous mammals from one zoo were characterized for their phylogenetic origin, intestinal virulence gene (VG) prevalence, and genomic diversity… Similarity analysis of pulsed-field gel electrophoresis (PFGE) patterns revealed closer relatedness between the isolates from carnivores and omnivores than those from herbivores." |
| Comments |
P.212 right column 3rd paragraph: "However, greater variability arises from the environment in which a given animal or human population lives. In animals, the main environmental force shaping the genetic structure of the E. coli gut population is the domestication status of the host [primary source 85]. Domesticated animals have a decreased proportion of B2 strains than their wild counterparts (from 30% in wild animals to 14% and 11% in farm and zoo animals, respectively) and an increased proportion of A strains (from 14% in wild animals to 27% and 26% in farm and zoo animals, respectively) (these data were compiled from 1,154 animals, primary sources)." |
| Entered by |
Uri M |
| ID |
116918 |