The Biosecurity Authority of Fiji (BAF) has launched an emergency response following the discovery of the invasive Tongan fruit fly, Bactrocera facialis, on the Yasawa Islands. This pest poses a serious risk to local agriculture as it is known to infest various fruits including mangoes, papayas, guavas, and breadfruits, ultimately causing internal decay and premature loss of fruit.
Surendra Pratap, Chief Executive of BAF, confirmed that several islands, specifically Nanuya, Naukacuvu, Narara, and Vomo, are affected by this invasive species. To understand the severity of the problem, BAF is currently conducting an intensive delimiting survey, which involves mass trapping and field inspections. “We have deployed additional pheromone traps and initiated protein-based spraying to manage the pest,” he stated.
Pratap emphasized the urgency of the situation, explaining that the life cycle of the fruit fly, from egg to adult, can be as short as three months, depending on temperature conditions. To mitigate further spread, restrictions on the movement of fruit from the affected islands have been implemented, alongside a six-month emergency declaration aimed at facilitating the containment measures.
He noted that there is currently no known biological control for this pest. However, BAF is implementing integrated pest management techniques, including fruit bagging and the collection and disposal of fallen fruits, to limit breeding conditions for the fruit fly. Agriculture Minister Tomasi Tunabuna added that although Fiji has its own indigenous fruit fly species, the appearance of Bactrocera facialis presents a new and significant challenge that could jeopardize crops and trade.
This incident marks Fiji as the second Pacific Island nation after Tonga to report this pest. The proactive strategies being adopted by BAF, coupled with strong cooperation from local communities, reflect a unified effort to protect the agricultural integrity of the region. With ongoing vigilance and community collaboration, Fiji strives to reduce the potential impacts of this invasive threat, ensuring the preservation of its agricultural landscape and food security for the future.