Investigation of Haemogregarina in Sawrow fish (Trachurus mediterraneus) in Zliten ‎coastal area, Libya

Abstract

This study was conducted to estimate the prevalence, mean abundance, and mean ‎intensity of Haemogregarina infection on Sawrow fish (Trachurus mediterraneus) from ‎Zliten coast, Libya. A total of 12 specimens of Sawrow fish species were collected ‎randomly, the length (19.23 ± 0.72cm) and the weight (110.25 ± 7.88 g). The fish were ‎transported immediately alive to the laboratory in the Department of Fish Biology and ‎Fish Culture, College of Marine Resources, Asmarya University, where they were ‎maintained alive in well aerated glass aquaria (1x2x4 m). The gills, fins, and skin were ‎examined for ectoparasitic protozoa using a light microscope. The results showed ‎positive effect of haemogregarina in the Sawrow. Blood recorded the highest prevalence ‎and abundance among all the other organs in Sawrow fish followed by kideny, liver and ‎spleen respectively. The results provide a significant difference at (p<0.01), and the ‎results were discussed with other studies in the haemogregarinidae.‎