Advances in Animal and Veterinary Sciences
The Study on Effect of Temperature Stress on Occurrence of Clinical Signs Caused by Aeromonas hydrophila in Capoeta damascina in In Vitro Condition
Laleh Yazdanpanah Goharrizi1*, Mohammad Ebrahim Jalil Zorriehzahra2, Milad Adel3
1Animal Sciences Dept., Kerman Agricultural and Natural Resources Research Center, Agricultural Research Education and Extension Organization (AREEO), Kerman; 2Aquatic Animal Health & Diseases Dept., Iranian Fisheries Sciences Research Institute (IFSRI); 3Aquatic Animal Health and Diseases Dept., Caspian Sea Ecology Research Center, Iranian Fisheries Science Research Institute (IFSRI), Agricultural Research Education and Extension Organization (AREEO),Tehran, I.R. Iran.
*Correspondence | Mohammad Ebrahim Jalil Zorriehzahra, Aquatic Animal Health & Diseases Dept., Iranian Fisheries Sciences Research Institute (IFSRI), Iran; Email: zorrieh@yahoo.com
Abstract
Aeromonas hydrophila is one of the most important microbial pathogens affecting several fish species worldwide and economical loss of related mortality should be considered in world aquaculture industry. In this study, the effects of temperature stress on occurrence of clinical signs caused A. hydrophila on Capoeta damascina was carried out For this purpose, 240 C. damascina were captured from Baft’s rivers in Kerman province in spring season of 2014 and transported to central laboratory. After adaptation period in first stage, 0.1 ml of 3× 108 cfu/ml of A. hydrophila was injected intraperitoneal to each fish. Then, fish were divided into 4 groups (0-10, 10 - 20, 20 - 30 and to over 30oC). After 2 weeks, clinical signs and mortality of each group were recorded. The results revealed that water temperatures can play an important role to pathogenicity of A.hydrophila on C. damascina. Most clinical signs and mortality were observed in 20-30oC and above groups, although, at 10-20oC and below 10oC only 40% and 1% of fish revealed typical clinical signs, respectively.
Keywords | Iran, Aeromonas hydrophila, Capoeta damascina, Temperature stress
