Publications by authors named "J F Bernardet"
sp. nov., sp. nov. and sp. nov. isolated from batfish () in Tahiti Island, French Polynesia.
Int J Syst Evol Microbiol
January 2025
Ten novel Gram-negative, aerobic, non-sporulating, yellow-pigmented rod-shaped bacterial strains motile by gliding were isolated from marine organisms/environments in French Polynesia. Three of them designated as 190524A05c, 190524A02b and 190130A14a were retrieved from orbicular batfish () mucus. Online database comparisons using 16S rRNA amplicons resulted in over 95% similarity to the genus .
View Article and Find Full Text PDFInfectious diseases are a major constraint on aquaculture. Genetic lines with different susceptibilities to diseases are useful models to identify resistance mechanisms to pathogens and to improve prophylaxis. Bacterial cold-water disease (BCWD) caused by Flavobacterium psychrophilum represents a major threat for freshwater salmonid farming worldwide.
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- Bacteria of the genus Flavobacterium exist in various environments, with some species like Flavobacterium psychrophilum and Flavobacterium columnare significantly harming fish farms.
- A specific isolate, Flavobacterium collinsii (TRV642), was found in rainbow trout spleen and is genetically closely related to other known fish pathogens.
- Despite low virulence in tests, TRV642 can survive in fish and may lead to disease under stressful conditions, highlighting the potential for opportunistic infections in aquaculture settings.
Bacterial pathogens have a critical impact on aquaculture, a sector that accounts for half of the human fish consumption. (phylum ) is responsible for bacterial cold-water disease in salmonids worldwide. The molecular factors involved in host invasion, colonization and haemorrhagic septicaemia are mostly unknown.
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- * Researchers combined serotyping and genome analysis to identify genetic factors in O-antigen production, leading to a more effective multiplex PCR-based serotyping method that outperforms traditional serotyping.
- * This new method allows for better analysis of fish isolates without clear links to species or geographic origin, and it could aid in disease monitoring, vaccine developments, and understanding fish populations.