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Open Access Publications from the University of California

Why do possums survive aerial poisoning operations?

  • Author(s): Morgan, D. R.
  • Batcheler, C. L.
  • Peters, J. A.
  • et al.

Major causes of failure of aerial poisoning operations against possums identified were: sublethal toxic loading, undersize sublethal baits, nonlearned behavioural aversion to 1080, and failure to encounter bait. Dislike of bait was not a major cause of failure. Progress has been made towards solving these problems, but failure to encounter bait remains a likely major reason for possums surviving aerial poisoning. Improvements in the aerial sowing of bait are essential if the full benefit of this progress is to be realised.

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