An isometric ventricular preparation was used to investigate the effect of changes in temperature (10, 15, 20, 25 and 30 °C) on the cardiac contractility produced by increasing of frequency in the catfish heart. The ability of the ventricular preparation to develop the cardiac force at 10 °C continued regularly until a frequency of 1.0 Hz, whereas at 15, 20, ... إقراء المزيد

_EDWARDSIELLA TARDA_ IS A COMMON FISH PATHOGEN, IT CAUSES ONE OF THE MOST SIGNIFICANT SEPTICEMIC DISEASES RESPONSIBLE FOR MASS MORTALITY IN FRESHWATER FISHES AND CONSEQUENTLY HIGH ECONOMIC LOSSES. THIS STUDY WAS CARRIED OUT TO INVESTIGATE PREVALENCE OF _E. TARDA_ AMONG _O. NILOTICUS_ (_EDWARDSIELLA TARDA_ IS A COMMON FISH PATHOGEN, IT CAUSES ONE OF THE MOST SIGNIFICANT SEPTICEMIC DISEASES RESPONSIBLE FOR ... إقراء المزيد