Action: Control invasive predators
- We found no evidence for the effects of controlling invasive species that are predators to bats.
'No evidence' for an action means we have not yet found any studies that directly and quantitatively tested this action during our systematic journal and report searches. Therefore we have been unable to assess whether or not the action is effective or has any harmful impacts. Please get in touch if you know of such a study for this action.
Introduced predators such as rats, feral cats and snakes can threaten bat populations. The brown tree snake Boiga irregularis which invaded Guam in the 1950s, was responsible for the extermination of two bat species. Eradication programmes have been successful, for example with rats Rattus spp. on the San Jorge Islands, Mexico (Donlan et al. 2003) but we found no evidence for the subsequent effects on local bat populations.
Donlan C.J., Howald G.R., Tershy B.R. & Croll D.A. (2003) Evaluating alternative rodenticides for island conservation: roof rat eradication from the San Jorge Islands, Mexico. Biological Conservation, 29–34.