Mycopathologia

, Volume 72, Issue 3, pp 131–134 | Cite as

The effect of fungicides on survival of the crayfish plague fungus, Aphanomyces astaci, Oomycetes, growing on fish scales

  • Lena Häll
  • Torgny Unestam
Article

Abstract

Zoospores from the crayfish plague fungusAphanomyces astaci could germinate and growin vitro on scales ofSalmo salar.

The fungicidal activity of different compounds was tested against the fungus growing on fish scales as well as in lake water. Malachite green was the most effective fungicide, but scale mucus protected the fungus from this compound to some extent. For complete inhibition of spore germination in scale mucus 2 mg 1−1 was required compared to 1 mg 1−1 in lake water.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Abrahams, D. & W.D. Brown. 1977. Evaluation of fungicides for Haliphthores milfordensis and their toxicity to juvenile European lobsters. Aquaculture 12: 31–40.Google Scholar
  2. 2.
    Cline, T. & G. Post. 1972. Therapy for trout eggs infected with Saprolegnia. Prog. Fish. Cult. 34: 148–151.Google Scholar
  3. 3.
    Roberts, R.J. & C.J. Shepard, 1974. Prevention and treatment of disease. In: Handbook of Trout and Salmon diseases, pp. 144–159. Fishing News (Books) Ltd., London and Tonbridge.Google Scholar
  4. 4.
    Srivastava, G.C. & R.C. Srivastava. 1978. A note on the potential applicability of malchite green oxalate in combating fishmycosis. Mycopathologia 64: 169–171.Google Scholar
  5. 5.
    Svensson, E. & T. Unestam. 1975. Differential induction of zoospore encystment and germination in Aphanomyces astaci, Oomycetes. Physiol. Plant. 35: 210–216.Google Scholar
  6. 6.
    Söderhäll, K., E. Svensson & T. Unestam. 1978. Chitinase and protease activities in germinating zoospore cysts of a parasitic fungus, Aphanomyces astaci, Oomycetes. Mycopathologia 64: 9–11.Google Scholar
  7. 7.
    Unestam, T. 1965. Studies on the crayfish plague fungus Aphanomyces astaci. I. Some factors affecting growth in vitro. Physiol. Plant. 18: 483–505.Google Scholar
  8. 8.
    Willoughby, L.G. & A.D. Pickering. 1977. Viable Saprolegniaceae spores on the epidermis of the salmoid fish Salmo trutta and Salvelinus alpinus. Trans. Br. mycol. Soc. 68: 91–95.Google Scholar

Copyright information

© Dr. W. Junk B.V. Publishers 1980

Authors and Affiliations

  • Lena Häll
    • 1
  • Torgny Unestam
    • 1
  1. 1.Institute of Physiological BotanyUniversity of UppsalaUppsalaSweden

Personalised recommendations