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Host range of Achlya orion Coker & Couch on certain freshwater fishes

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Abstract

By the present investigations the host range of Achlya orion Coker and Couch has been extended to, Puntius sophore, Puntius ticto, Puntius conchonius, Puntius sarana, Chanda ranga, Channa marulius, Channa punctatus, Notopterus notopterus, Labeo rohita, Colisa lalia and Anabas testudineus; 11 freshwater fishes.

The ability of certain Saprolegniaceous fungi to parasitise fish has been reported by several investigators viz., Clinton (2), Tiffney (21, 22), Tiffney & Wolf (23), Gopalakrishnan (3), Vishniac & Nigrelli (24), Scott & O'Bier (7), Bhargava et al (1) and Srivastava & Srivastava (10.20) etc. These fungi are known to attack fish eggs, fry, fingerling and adult fishes and as a general rule the fungal infection starts when the host gets injured either mechanically or as result of infections other than fungal which often result in epidemics causing 100% mortality of the infected hosts (Scott & O'Bier 7).

During the course of an investigation on fungi associated with fish diseases, author observed the severe fungal infections of Colisa fasciatus (Bl.) and Anabas testudineus (Bl.) in the waters of Ramgarh Lake, Gorakhpur, causing heavy mortality of the infected hosts. The fungus was identified as Achlya orion Coker Couch and its pathogenicity was also established by conducting laboratory inoculation experiments on the lines of Scott & O'Warren (8); (Srivastava & Srivastava, 14).

In view of the above observations, it seemed desirable to investigate the host range of this mould on accurately identified hosts in order to asses the extent of damage done to such fishes.

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Author notes

  1. R. C. Srivastava

    Present address: Botany Dept., S.M.M. Town (P.G.) College, Ballia, India

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  1. Department of Botany, St. Andrew's College, Gorakhpur, India

    R. C. Srivastava

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Srivastava, R.C. Host range of Achlya orion Coker & Couch on certain freshwater fishes. Mycopathologia 64, 49–51 (1978). https://doi.org/10.1007/BF00443089

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