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Experimental intra-ovum infection of salmonid eggs with Renibacterium salmoninarum and vertical transmission of the pathogen with such eggs despite their treatment with erythromycin



Experimental intra-ovum infection of salmonid eggs with Renibacterium salmoninarum and vertical transmission of the pathogen with such eggs despite their treatment with erythromycin



Diseases of Aquatic Organisms 1(3): 197-202



Studies with eggs of steelhead trout Salmo gairdneri and coho salmon Oncorhynchus kisutch showed that the eggs can be infected internally with R. salmoninarum by immersing them before fertilization and water-hardening in coelomic fluid containing high numbers of R. salmoninarum cells. These results suggest that, in vivo, salmonid eggs acquire their intra-ovum R. salmoninarum infections from heavily infected coelomic fluid that surrounds them following their release to the body cavity.

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Accession: 001364134

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