Seyed Aliakbar Saadpour - Department of Life Sciences, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran

The genus Saprolegnia is one of the most important pathogenic aquatic fungi in farmed and wild fish. In this paper, ۱۰۰ samples were prepared from ۱۰ fish ponds in Sari, Neka and Behshahr. After cultivation, purification and macroscopic and microscopic examinations, we were able to isolate the fungi Saprolegnia parasitka, Saprolegnia and Aclia. Their prevalence was ۴۸% Parasitica, ۳۸% Saprolegnia, ۳۶% Aclias and ۱۵% other fungi, respectively. Their frequencies are ۴۸ Parasitica, ۳۸ Saprolegnia, ۳۶ Aclias and ۱۵ other fungi, respectively. Also, in the study of other parameters and their effect on the presence of Saprolegnia, it was observed that the ambient temperature of the water was suitable for the growth of this fungus and also the pH and salinity of the water also affected the presence of Saprolegnia.

Aquatic fungi, Contamination rate, Fish farms, cutaneous infections