The intention of this study was to identify the bacterial pathogens infecting Oreochromis niloticus (Nile tilapia) and Clarias gariepinus (African catfish), and to establish the antibiotic susceptibility of fish bacteria in Uganda. A total of 288 fish samples from 40 fish farms (ponds, cages, and tanks) and 8 wild water sites were aseptically collected and bacteria isolated from the head kidney...

ABSTRACT: In recent decades, Aeromonas hydrophila has emerged as a foodborne bacterial pathogen of public health concern, especially it exhibits resistance to the major chemical sanitizers commonly used in food industry. Meanwhile, this may be spread from diseased fish flesh through contamination equipment contact surfaces during processing, thus posing safety risk. Thise determined susceptibil...

An acute infectious disease of northern sheatfish (Silurus soldatovi) was found in a commercial aquaculture pond Tianjin, China. Herein, two dominant bacterial strains were isolated from naturally diseased and identified as Aeromonas veronii Vibrio cholerae. Seven healthy seven fish that collected the used for gut microbiota analysis by high-throughput 16S rRNA gene sequencing. The α-diversity ...

This study was conducted to examine in vitro antibacterialpotential from seed methanol extract of Peganum harmala (L) against some fish pathogenic bacteria including Lactococcus garvieae, Aeromonas hydrophila, Yersinia ruckeri and Pseuodomonas putida isolated from diseased rainbow trout (Oncorhynchus mykiss). The antibacterial activity of extracts was evaluated using disc diffusion assay, m...

Streptococcus iniae causes severe septicemia and meningitis in farmed fish and is also occasionally zoonotic. Vaccination against S. iniae is problematic, with frequent breakdown of protection in vaccinated fish. The major protective antigens in S. iniae are the polysaccharides of the capsule, which are essential for virulence. Capsular biosynthesis is driven and regulated by a 21-kb operon com...

A nested reverse transcriptase (RT) PCR assay detected mRNA of the salmonid pathogen Renibacterium salmoninarum in samples of RNA extracts of between 1 and 10 cells. Total RNA was extracted from cultured bacteria, Atlantic salmon (Salmo salar L.) kidney tissue and ovarian fluid seeded with the pathogen, and kidney tissue from both experimentally challenged and commercially raised fish. Followin...

Species of the genus Aeromonas, which inhabit aquatic environments, can produce septicaemia and ulcerative and hemorrhagic fish diseases, including furunculosis, which result in mass death and important economic losses in the aquaculture sector (Austin & Austin, 2007; Beaz-Hidalgo et al., 2010; Bernoth et al., 1997; Gudmundsdóttir & Björnsdóttir, 2007; Noga, 2010; Wiklund & Dalsgaard, 1998). Th...

Skln ulcer disease of flounder Platichthys flesus (L.) was investigated a t 7 sampling sites in the northern Baltic Sea, SW Finland, dunng 1987-1989. Disease prevalences ranged from 1 8 to 11.1 % in different areas. A significant correlation was established between sex, fish length and disease prevalence. h4ales were more affected (10 7%) than females (3.1%) and larger flsh showed higher diseas...