is a strategy to enhance the kill achieved by aerial baiting,
when using bait stations, or when
traps for possum control.
may comprise either carrot
or cereal baits, or a flour-based
introduces naive possums to a novel food and primes their
interest in the subsequent toxic baiting.
generally gives better possum kills and thus a longer period
of protection before possum numbers increase to and exceed
Tb threshold densities.
consumption of bait, but robust comparisons are only now
being evaluated on
the costs, benefits, and risks (to non-target species) of
of prefeed in bait stations shortens the time taken by
possums to find toxic bait.
- Prefeed bait is by necessity the same
as the following toxic bait, except that it is free of toxin
and dye (used to indicate the bait is toxic).
appears to increase the kill of possums surviving previous
control and exhibiting bait shyness,
and overcomes cautious feeding behaviour.
effect of prefeed on bird deaths is equivocal, but prefeed
reduces the time toxic bait is out in the
environment, and hence the length of time non-target species
are at risk.
rates vary, but prefeed is typically sown at or just below
the sowing rate of the subsequent toxic bait.
for aerial operations should ideally be sown within 2
weeks of the toxic drop.
prefeed is used for ground baiting, the toxic application
should ideally be applied less than 4 days following the
prefeed is used for ground baiting not all prefeed baits
need to be replaced with toxic ones or traps (i.e. more
prefeed baits can be used than toxic baits or traps).
pre-feeding bait stations, allow possums access to bait for
at least a week before applying toxic bait.
bait stations are pre-fed, only apply toxic bait in those
stations with prefeed bait removed.
all prefeed bait is in good condition and palatable.
some ground-based baits operations there are prefeed pastes available
(e.g. from Connovation
or Pest Management Services).