Hi!

All are Gram-negative bacteria species responsible for causing the diseases.

Brucella ovis- ovine brucellosis

Brucella canis- brucellosis in dogs and other canids.

Brucella melitensis- ovine brucellosis, along with Brucella ovis.

Check the following article, all the three spp. are isolated from aquatic animals.

Genomic fingerprinting and development of a dendrogram for Brucella spp. isolated from seals, porpoises, and dolphins

(http://journals.sagepub.com/doi/pdf/10.1177/104063879901100208)

Genomic fingerprinting and development of a dendrogram for Brucella spp. isolated from seals, porpoises, and dolphins

(http://journals.sagepub.com/doi/pdf/10.1177/104063879901100208)

Dear, 

https://www.ncbi.nlm.nih.gov/books/NBK8572/

Dear Dr. Khetam

this link may help you

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3187128/

• http://journals.sagepub.com/doi/pdf/10.1177/104063879901100208

hello 

(http://journals.sagepub.com/doi/pdf/10.1177/104063879901100208)