Emerging Threat: The Spread and Management of the Invasive Black Fig Fly
Posted by Rigo on 17 Aug 2023The black fig fly (Silba adipata) is an invasive pest that originated in the Mediterranean and has recently been found damaging fig crops in South Africa (2007), Mexico (2020), and southern California (2021).
First discovery was posted on Ourfigs forum and a thread titled "Wow! Jumping worms inside my figs !?!". Then came another thread whch has now become a large following of on Ourfigs forum by fig enthusiast Eric Durtschi titled "URGENT PSA For All California Growers".
The fly's life cycle involves females laying eggs in figs' small openings, followed by larvae feeding within the fruit. This can lead to premature fruit drop. Monitoring methods like traps with specific baits help track adult fly populations. However, natural enemies and effective biological controls remain unclear.
Controlling the pest is challenging and unfortunately at the moment, impossible due to the larvae's location within the fruit. Chemical control methods are being explored, including insecticide baits. Orchards need to maintain good sanitation practices to minimize infestation risks.
Black Fig Fly Damage Identification video by Eric Durtschi.
Researchers are actively studying the fly's behavior, spread, and impact. They are working on models to predict its range and evaluating monitoring and control strategies. Timely detection and effective management are crucial to prevent further damage to fig production.
As of now, fig enthusiasts such as Brian Melton from Profig are working with San Bernardino County Deputy Ag Commissioner Sarah Mellor. Here is a pamphlet with BFF info and how to report the Black Fig Fly.
