In the choice test, treated and untreated fruits were placed
in the same 9 L plastic cage, 5 cm apart, to provide a choice
for oviposition. Cages were effectively split into two, with a
‘treated’ half and a ‘control’ half. The individual oils were
assigned at random to the 32 cages (equivalent to main plots)
so that there were four replicates each. In the no-choice test,
the treated and untreated fruits were placed in different cages,
each containing 20 B. tryoni females. The experiment was
arranged according to a randomised complete block design.