A study from the Tasmanian Institute of Agriculture (TIA) warns that the establishment of Varroa mites in the state could severely disrupt crop pollination. The research was prompted by the mite's ongoing spread across mainland Australia, where it is already devastating European honeybee populations.
Managed colonies can be monitored and treated by beekeepers, but the study highlights a critical gap. Feral honeybee colonies — which are unmanaged and far more numerous in some regions — are likely to suffer significantly higher mortality if the parasite becomes prevalent.
Tasmania has so far remained free of the Varroa mite, but its arrival is considered a matter of time given the pest's trajectory on the mainland. The state's agricultural sector depends heavily on honeybee pollination for crops such as cherries, apples, and nuts.
The loss of feral colonies could force growers to rely more heavily on expensive managed pollination services, raising production costs and threatening yields. TIA researchers emphasize the need for surveillance and contingency planning ahead of any potential incursion.
The study does not quantify the economic impact but makes clear that the stakes are high for Tasmanian agriculture. No specific timeline for a potential Varroa arrival is provided in the research.