Draft Genome Sequences of Flavobacterium covae Strains LSU-066-04 and LV-359-01

Abstract

Flavobacterium covae is one of four Flavobacterium spp. that cause columnaris disease in teleost fish. Here, we report the draft genomes of two isolates, LSU-066-04 and LV-359-01, and their predicted virulence factors.

Varying Flavobacterium psychrophilum shedding dynamics in three bacterial coldwater disease-susceptible salmonid (Family Salmonidae ) species

“…Nevertheless, dead F. psychrophilum -infected fish clearly pose a significant risk for disease perpetuation within fish farms and hatcheries, underscoring the importance of implementing management strategies that aim to remove dead fish from rearing units quickly. Like F. psychrophilum , higher shedding rates in dead vs live salmonids have been noted in other fish pathogenic Flavobacterium species (e.g., F. columnare , a cause of columnaris disease) ( 43 , 44 ) as well as Aeromonas salmonicida subspecies salmonicida (e.g., the cause of furunculosis) ( 45 ), highlighting dead fish as potential transmission risks for multiple bacterial fish pathogens.…”

Gene expression profiles of white bass (Morone chrysops) and hybrid striped bass (M. chrysops x M. saxatilis) gill tissue following Flavobacterium covae infection

“…WB and HSB in the control group (0 h) were first given a mock treatment of 10 mL sterile culture media and gill tissues were sampled from WB and HSB individuals ( n = 6 WB and n = 6 HSB). The remaining fish were challenged by the addition of 10 mL culture of F. covae isolate LSU-066–04 [9] (0.70 absorbance at 550 nm; 6.3 × 10 ^ 6 CFU/mL) to each aquaria. Water was provided through an ultra-low-flow water delivery system at a temperature of 21–22ºC and a flow rate of 30 mL/min for 24 h and then flow was increased to 200 mL/min for the duration of the study [ 8 , 10 ].…”