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Brucella Infection in Asian Sea Otters (Enhydra lutris lutris) on Bering Island, Russia.
J Wildl Dis. 2017 10; 53(4):864-868
Publication Type
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't
Tristan L Burgess
Christine Kreuder Johnson
Alexander Burdin
Verena A Gill
Angela M Doroff
Pamela Tuomi
Woutrina A Smith
Tracey Goldstein
Author Affiliation
1 Karen C. Drayer Wildlife Health Center, University of California Davis School of Veterinary Medicine, 1089 Veterinary Medicine Drive, Davis, California 95965, USA.
J Wildl Dis. 2017 10; 53(4):864-868
Publication Type
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't
Bayes Theorem
Brucella - classification - genetics - isolation & purification
Brucellosis - epidemiology - microbiology - veterinary
DNA, Bacterial - isolation & purification
Islands - epidemiology
Markov Chains
Monte Carlo Method
Otters - microbiology
Polymerase Chain Reaction - veterinary
Rectum - microbiology
Russia - epidemiology
Seroepidemiologic Studies
Infection with Brucella spp., long known as a cause of abortion, infertility, and reproductive loss in domestic livestock, has increasingly been documented in marine mammals over the past two decades. We report molecular evidence of Brucella infection in Asian sea otters (Enhydra lutris lutris). Brucella DNA was detected in 3 of 78 (4%) rectal swab samples collected between 2004 and 2006 on Bering Island, Russia. These 78 animals had previously been documented to have a Brucella seroprevalence of 28%, markedly higher than the prevalence documented in sea otters (Enhydra lutris) in North America. All of the DNA sequences amplified were identical to one or more previously isolated Brucella spp. including strains from both terrestrial and marine hosts. Phylogenetic analysis of this sequence suggested that one animal was shedding Brucella spp. DNA with a sequence matching a Brucella abortus strain, whereas two animals yielded a sequence matching a group of strains including isolates classified as Brucella pinnipedialis and Brucella melitensis. Our results highlight the diversity of Brucella spp. within a single sea otter population.
PubMed ID
28715292 View in PubMed
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