Prevalence and Impacts of Vibrio alginolyticus infections in Red Sea Fishes from the Coastal Waters of Hurghada, Egypt

Document Type : Research article

Authors

1 Fish diseases Lab., Aquaculture division, National institute of Oceanography and Fisheries, Hurghada branch

2 Fish Diseases and Management Department, Faculty of Veterinary Medicine, Sohag University, Sohag, Egypt

3 Fish Diseases Dept., Faculty of Veterinary Medicine, New Valley University, Egypt

4 Fish Diseases Lab., National Institute of Oceanography and Fisheries, Egypt

Abstract

This study investigated the prevalence of V. alginolyticus infections in two marine fish species, Siganus rivulatus and Rhabdosargus haffara. The overall prevalence was 18.84% among the examined sample. A significant difference in infection rates was observed between the two species, with R. haffara exhibiting a higher infection rate of 61.54% compared to a lower rate of 38.46% in S. rivulatus. The results highlight V. alginolyticus as an important pathogen for both species, with R. haffara being more susceptible. The pathogen was identified through morpho-chemical tests, and experimental infection trials confirmed its pathogenicity in both species with 40, 60% mortality rates in S. rivulatus and R. haffara. Additionally, V. alginolyticus was highly sensitive to Tetracycline, Ofloxacin, and Chloramphenicol. Histopathological examination of infected S. rivulatus showed significant inflammatory and degenerative changes. These findings emphasize the importance of monitoring and controlling Vibrio infections to protect marine fish health and support sustainable aquaculture practices.

Keywords

Main Subjects

Files

Share

How to cite

Statistics