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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Brucella ovis
Category: Zoonotic
Etymology: Genus name: named after Sir David Bruce, who first identified the organism, which causes brucellosis.
Species epithet: of sheep.
Significance:  [Important]   
Alternative Species Name(s):Brucella melitensis biovar Ovis
Taxonomy:
Phylum
Proteobacteria
Class
Alphaproteobacteria
Order
Rhizobiales
Family
Brucellaceae 
Genus
Brucella
Type Strain:
Macromorphology (smell): Pale honey coloured transparant colonies, which do not give hemolysis on blood agar.
Micromorphology: Nonmotile
Gram +/Gram -:G-
Metabolism: Aerobic
Catalase/Oxidase:+/+
Other Enzymes: Tryptophanase -, Urease -
Biochemical Tests: H2S -, Voges-Proskauer -
Fermentation of carbohydrates: Most Brucella spp. do not produce acid by fermentation of carbohydrates.
Spec. Char.:
Disease:
HostsDiseaseClinical picture
SheepBrucellosisAbortion, still birth, birth of weak lambs and vaginitis (ewes). Primary affects rams, epididymitis, orchitis and infertility.
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_009505 and NC0095054 ATCC 25840T 3 275 590 2c + 0 
Chrom. I (2 111 370 bp) and chrom. II (1 164 220 bp), respectively.

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
L26168 ATCC 25840T 1 412 
Two rRNA genes in chrom. I and one in chrom. II.

Taxonomy/phylogeny:
 
Eleven species have been described within genus Brucella and this genus is closely related to genus Bartonella. From a phylogenetic point of view, B. abortus, B. canis, B. ceti, B. melitensis, B. neotome, B. ovis, B. pinnipedialis and B. suis represent the same species (B. melitensis), but due to different host specificities, they have been affiliated with different species.
Updated:2022-08-18

News

New names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

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