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Predacious activity of the nematode-trapping fungus Duddingtonia flagrans against cyathostome larvae in faeces after passage through the gastrointestinal tract of horses |
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| Authors: | Michael Larsen, Peter Nansen, Svend Aage Henriksen, Jens Wolstrup, J rn Gr nvold, Anders Zorn,Erik Wed |
| Affiliation: | a Danish Centre for Experimental Parasitology, Department of Veterinary Microbiology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870, Frederiksberg C, Denmark b National Veterinary Laboratory, 27 Bülowsvej, DK-1790, Copenhagen V, Denmark c Microbiology Section, Department of Ecology and Molecular Biology, Royal Veterinary and Agricultural University, 21 Rolighedsvej, DK-1958, Frederiksberg C, Denmark d Section of Zoology, Department of Ecology and Molecular Biology, Royal Veterinary and Agricultural University, 13 Bülowsvej, DK-1870, Frederiksberg C, Denmark e Statens Seruminstitut, Animal Department, 71 Frederiksborgvej, DK-3450, Allerød, Denmark |
| Abstract: | This study was undertaken to examine the potential of the nematode-trapping microfungus Duddingtonia flagrans to survive passage through the gastrointestinal tract of horses and subsequently to destroy free-living stages of cyathostomes in faecal cultures. Three different oral dose levels were tested, two horses being used for each level. Faeces were collected twice daily and the number of parasite eggs per gram of faeces were determined. The numbers of infective third stage larvae which developed in faecal cultures were determined after the cultures had been incubated for 2 weeks at 24°C. Results showed a positive relationship between dose level and reduction in the number of infective larvae. Fungi were recovered in faeces at times which corresponded to high larval reduction. |
| Keywords: | Horse Cyathostominae-general Duddingtonia flagrans Fungi Control methods-Nematoda |
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