The Biosecurity Authority of Fiji (BAF) has initiated an emergency operation following the detection of the invasive Tongan fruit fly, Bactrocera facialis, on the Yasawa Islands. This invasive species poses a significant threat to local agriculture, infesting fruits such as mangoes, papayas, guavas, and breadfruits, leading to internal decay and premature fruit drop.
Chief Executive of BAF, Surendra Pratap, confirmed that the islands affected include Nanuya, Naukacuvu, Narara, and Vomo. An intensive delimiting survey is currently underway, utilizing mass trapping and field inspections to determine the extent of the infestation. “We have deployed additional pheromone traps and initiated protein-based spraying to manage the pest,” said Pratap.
He highlighted the urgency of the situation, noting that the life cycle of the fruit fly, from egg to adult, can take up to three months and is heavily influenced by temperature. As a precautionary measure, restrictions on the movement of fruit from affected islands have been enacted, and a six-month emergency declaration is in effect to facilitate containment efforts.
Pratap also commented on the lack of a known biological control for this pest, but assured that BAF is employing integrated pest management techniques such as fruit bagging and the collection and destruction of fallen fruits to prevent the fly from breeding. Agriculture Minister Tomasi Tunabuna emphasized that while Fiji has indigenous fruit fly species, the presence of Bactrocera facialis represents a new challenge that could seriously damage crops and negatively affect trade.
Fiji’s encounter with this invasive species marks its position as the second Pacific Island country after Tonga to report this pest. The proactive measures being taken by BAF and collaboration with local communities signify a collective commitment to safeguard the region’s agricultural health. Through continuous vigilance and community engagement, Fiji aims to mitigate the impacts of this invasive threat, thereby preserving its agricultural landscape and food security for the future.