A large range of general predators including flatworms, ants, beetles and cane toads assist in reducing banana weevil borer numbers. Research is being undertaken to determine the effectiveness of insect parasitic nematodes, which could prove suitable as biological control agents for banana weevil borer control.
Some international research, and research in NSW have shown some success using laboratory assays of entomopathogenic nematodes, Steinernema spp. and Heterorhabditis spp. However, to date, Queensland-based research has been unable to replicate positive results in the field, instead showing no difference between treated plants and untreated (control) plants, indicating that more in-field research is still needed.
Initial research in Australia shows that some insect diseases (entomopathogens) such as the fungus, Beauveria bassiana, have the capacity to reduce banana weevil borer populations, but more research is still needed.