Journal
GRASS AND FORAGE SCIENCE
Volume 71, Issue 4, Pages 659-666Publisher
WILEY-BLACKWELL
DOI: 10.1111/gfs.12203
Keywords
Avanex((R)); bird strike; ergovaline; Epichloe coenophiala; wildlife control
Categories
Funding
- Foundation for Arable Research (FAR)
- Grasslanz Technology Ltd.
- PGG Wrightson Seeds Ltd.
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Bird strike is a significant problem for the aviation industry, caused in part by the attractiveness of the grass surrounding airports to birds. Endophyte-infected grasses such as Avanex((R)) have been shown to reduce bird populations at airports through the production of secondary metabolites. These metabolites are unpalatable to herbivorous, omnivorous and granivorous birds and are known to reduce insect densities, thereby making the sown areas less attractive to insectivorous birds. Raptors also provide a bird-strike threat which could be reduced by controlling mouse populations around airports. In this study, the effect of endophyte-infected seed on mouse feeding behaviour has been investigated. By performing a choice trial offering diets containing endophyte-infected and endophyte-free tall fescue seed, it was shown that endophyte-infected seed was less palatable to mice (P<0001 in a 14-d trial). Furthermore, when diet positions were reversed, mouse feeding behaviour was modified to again select endophyte-free material (P<0001 over a further 14d). This result shows that endophyte-infected grasses could not only be used in the control of bird populations but they also have the potential to control mouse populations which in turn would decrease the number of raptors. This use of endophyte-infected grasses in areas surrounding airport runways shows great promise for the aviation industry.
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