1*Showkat Aziz Lone, 1Rekha Chauhan and 2Susan Manohar

1Department of Zoology and Applied Aquaculture Barkatullah University Bhopal-462026 (India) 2Department of Zoology, Govt. MGM, PG College Itarsi-461111 (India) Corresponding Author Email: - showkataziz964@gmail.com

ABSTRACT

Water moulds (oomycetes) of the order Saprolegniales, such as Achlya, Saprolegnia and Aphanomyces species, are accountable for overwhelming infections on fish in aquaculture, fish farms and hobby fish tanks. Present study was conducted to isolate, identify and to determine the pathogenecity of some species of Genus Achlya on some fresh water fishes of Bhopal. The study has been conducted for six months i.e., December 2013 to May 2014. During the course of study six species of Achlya viz., A. americana, A. apiculata A. flagellata, A. hypogyana, A. klebsiana and A. prolifera were isolated from 15 locally available species of fresh water fishes. Among fungal isolates from these fishes, 40% were found prone to Achlya prolifera and minimum (5%) were found to be affected by Achlya apiculata. All the six fungi were found to be pathogenic to fish and caused mortality except Achlya apiculata and Achlya klebsiana, these two only presented signs of infection but no mortality. Total 126 infected fishes were examined for the isolation of different species of Achlya. Among them 42 fishes were found infected with Achlya species. Maximum percentage of infection was observed in Mystus spp. M. cavasius (21%) and M. seenghala (12%).

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