Critics argue that these economic
evaluations are based on oversimplified assumptions (Fisher and
Naidoo, 2011), where for example spatial heterogeneity in commodity,
pest, and predator populations have not been taken into
account. In the only study from a staple crop, Leelapaibul et al.
(2005) shows the predation of the wrinkle lipped bat (Tadarida plicata)
on WBP in rice in Thailand.