Farmers warned as invasive fruit fly hits Yasawas

The Biosecurity Authority of Fiji (BAF) has officially confirmed the detection of the Fruit Fly species Bactrocera facialis in Fiji, marking the first recorded presence of this pest in the country.

Native to Tonga, this species is considered exotic and poses a serious threat to Fiji’s agriculture.

According to BAF, the fruit fly was first identified during routine surveillance on Nanuya Island in the Yasawa Group. Follow-up delimiting surveys and mass trapping have since confirmed its presence on three additional islands: Naukacuvu, Narara, and Vomo.

Bactrocera facialis is a polyphagous fruit fly, meaning it feeds on a wide range of host plants. Major crops at risk include breadfruit, mango, kavika, avocado, guava, chillies, capsicum and papaya.

The pest causes damage by laying eggs inside fruit. The larvae hatch and burrow into the flesh, leading to internal decay and mushiness. External signs include sting marks, discoloration, water-soaked patches, and premature fruit drop, making affected fruit inedible and unmarketable.

Although Fiji already has native fruit fly species that cause similar damage, the introduction of Bactrocera facialis adds to the biosecurity challenge, a BAF statement read.

BAF, in collaboration with the Ministry of Agriculture and Waterways has activated its Plant Pest Emergency Response Action Plan.

The authority urges all travelers not to carry fruits from the infested islands to other parts of Fiji.

Farmers and the public are advised to remain vigilant and report any suspected fruit fly activity.

Reports can be made via the BAF hotline at 5994, or through the nearest BAF or Ministry of Agriculture & Waterways office. For more information, visit http://www.baf.com.fj or follow BAF’s official social media pages.