Abstract
Larvae of the cattle lungworm Dictyocaulus viviparus were cultured in experimental units of 200 g cattle faeces placed in semi-transparent trays in the laboratory. In each of 4 experimental series using this experimental unit, chlamydospores (chl) of the nematode-trapping fungus Duddingtonia flagrans were admixed to half of the faecal cultures in a concentration of 50.000 chl/g. In all 4 series there was a significant reduction in the development and subsequent release of infective lungworm larvae from faecal cultures containing chlamydospores. The average reduction in larval release, caused by fungal spores, was 86%.
Keywords: parasites, lungworm, cattle.
Sammendrag
Larver af kvregets lungeorm, Dictyocaulus vivi-parus, blev dyrket i enheder af 200 g kvæggødning placeret i semi-transparente kasser i laboratoriet. I hver af 4 eksperimentelle serier, hvor ovennævnte opstilling blev anvendt, blev chlamydosporer (chi) af den nematode-fangende svamp Duddingtonia flagrans tilblandet halvdelen af opstillingeme i en koncentration på 50.000 chl/g. I alle 4 serier var der en signifikant reduktion i spredningen af infektive lungeormlarver fra kulturer tilblandet chlamydosporer. Den gennemsnitlige reduktion i spredningen, forårsaget af chlamydosporer, var 86%.
Full Text
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Acknowledgments
The authors highly appreciate the technical assistance of Leif Eiersted, and the financial support of Danish National Research Foundation and Chr. Hansen’s Bio Systems.
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