Nematode-trapping fungi in biological control of Dictyocaulus viviparus.
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%.
Henriksen
S A
SA
Danish Veterinary Laboratory, Copenhagen, Denmark. saah@svs.dk
Larsen
M
M
Grønvold
J
J
Nansen
P
P
Wolstrup
J
J
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology / Q000503:physiopathology / Q000517:prevention & control*; D004021:Dictyocaulus / Q000302:isolation & purification / Q000502:physiology*; D004022:Dictyocaulus Infections / Q000453:epidemiology / Q000503:physiopathology / Q000517:prevention & control*; D005243:Feces / Q000469:parasitology; D015994:Incidence; D003904:Mitosporic Fungi / Q000502:physiology*; D009090:Mucorales / Q000502:physiology; D010270:Parasite Egg Count / Q000662:veterinary; D010572:Pest Control, Biological; D013172:Spores, Fungal