Related Experiment Video
Updated: Feb 15, 2026

Environmental Screening of Aeromonas hydrophila, Mycobacterium spp., and Pseudocapillaria tomentosa in Zebrafish Systems
Published on: December 8, 2017
Histopathological studies of experimental Aeromonas hydrophila infection in blue tilapia, Oreochromis aureus
Sami A AlYahya1, Fuad Ameen2, Khalidah S Al-Niaeem3
1National Center for Biotechnology, King Abdulaziz City for Science and Technology, Saudi Arabia.
Abstract:
Blue tilapia, Oreochromis aureus, was experimentally infected with Aeromonas hydrophila, a bacterium that damages the gills, liver, and intestine, resulting in histopathological changes in the infected organs. Our histopathological study showed an aggregation of hemocytes with cell necrosis in gills; a massive aggregation of hemocytes and pyknotic nuclei in the hepatopancreas; and a lower rate of hemocyte aggregation in the digestive system of the infected fish.
Related Concept Videos
Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care
Experimental Determination of Chemical Formula
Experimental RNAi
Experimental Designs
Infection
The chain begins with pathogens: bacteria, viruses, fungi, prions, or parasites such as protozoa helminths. These can be present on the skin as transient or resident flora, or they can be acquired from the environment. Identifying and treating the type of infection and...

