Abstract

The results reported in this paper represent work from two separate experiments, namely a plot trial using cattle feces conducted at Kungsangen in Uppsala, Sweden and a plot trial using sheep feces undertaken at Tastrup in Copenhagen, Denmark. In both trials, a technique was used to monitor the level of Duddingtonia flagrans propagules in soil surrounding feces. The feces were from animals fed or not fed D. flagrans fungal chlamydospores. Also presented are the numbers of soil nematodes in soil surrounding sheep feces. The results indicate that D. flagrans has little growth beyond the fecal environment into surrounding soil when chlamydospores are fed to either sheep or cattle. This is substantiated by the soil nematode data. No statistical differences in the number of nematode taxa identified, Shannon Weiner H', proportion of various feeding groups, and B/B + F (B and F are the proportions of bacterial and fungal-feeding nematodes) were found when soil surrounding sheep feces containing chlamydospores and parasitic nematode eggs was compared to soil surrounding feces containing parasitic nematode eggs alone. It is unlikely that the application of D. flagrans as a biological control agent against the free-living stages of nematode parasites of these livestock will negatively affect populations of nontarget soil nematodes. (C) 2002 Elsevier Science.

Keywords

nematophagous fungi; biological control; sheep; cattle; Duddingtonia flagrans

Published in

Biological Control
2002, Volume: 23, number: 1, pages: 64-70
Publisher: ACADEMIC PRESS INC ELSEVIER SCIENCE

SLU Authors

• Höglund, Johan

  • Department of Veterinary Microbiology, Swedish University of Agricultural Sciences
    
  • National Veterinary Institute (SVA)

UKÄ Subject classification

Pathobiology


Publication identifier

DOI: https://doi.org/10.1006/bcon.2001.0987

Permanent link to this page (URI)

https://res.slu.se/id/publ/40889