Research Information System
AFRICA 8th INTERNATIONAL CONFERENCE ON SCIENTIFIC RESEARCHES, Cairo, Egypt, 8 August - 10 September 2025, pp.61, (Summary Text)
Cage fish farming carried out on the Black Sea
coasts is of great importance for the region's economy and the aquaculture
sector. However, high stocking density and environmental stress factors
increase the frequency of bacterial diseases and cause production losses. This
study aimed to monitor bacterial fish diseases in cage aquaculture enterprises
operating in the Southeastern Black Sea Region. A total of 20 bacteria were
isolated from rainbow trout and bass samples collected from various businesses
in the region during the 2020–2024 production season. The species-level
identification of the isolates was performed using classical bacteriological
methods and molecular analysis. According to the results obtained, six isolates
were classified as Aeromonas species (A.
hydrophila, A. sobria, A. sp.), Five isolates were identified as Vibrio
species (V. anguillarum, V.
alginolyticus, V. vulnificus, V. sp.), four isolates as Pseudomonas species
(P. fluorescens, P. luteola, P. sp.),
two isolates as Photobacterium (P.
damselae), and two isolates as cocci species (Lactococcus garvieae) based on the results obtained. It has been
observed that the frequency of infection is positively affected, especially at
the beginning of the summer months when water temperatures start to rise, and
during the autumn months when fish are transferred to the sea. The findings
revealed deficiencies in biosecurity and disease monitoring practices among
businesses in the region. Therefore, regular health screenings, the application
of early detection techniques, and effective preventive measures are of great
importance for regional disease control.