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Infection of plaice Pleuronectes platessa L. with Glugea (Nosema) stephani (Hagenmüller 1899) (Protozoa: Microsporidia) in a fish farm and under experimental conditions
Author(s) -
McVicar A. H.
Publication year - 1975
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1975.tb04634.x
Subject(s) - biology , microsporidia , pleuronectes , parasite hosting , fish <actinopterygii> , fishery , zoology , protozoa , fish farming , spore , aquaculture , veterinary medicine , microbiology and biotechnology , medicine , world wide web , computer science
One tank of plaice in the W.F.A. Fish Cultivation Unit at Hunterston, known to habour an infection with the microsporidian Glugea stephani , was sampled over a 2 year period and showed a mean level of infection of 49.4 % with an apparent trend towards a decrease. Experimental oral transmission was achieved, without the use of intermediate or carrier hosts, and the dependence of G. stephani on high temperatures was demonstrated. Most fish were able to tolerate the infection, but some mortalities in young fish were attributed to the parasite, particularly in the 2 months following the experimental infection. The parasite in the fish farm is believed to have been introduced with plaice stocks imported from more southern waters.