|Bactrocera trilineola (Drew)|
|Monday, 21 January 2013 13:57|
DISTRIBUTION: Restricted to Vanuatu, where it is common over nearly every islands.
HOST PLANTS: Surveys by the Fruit Fly Project have identified 31 host plant species in 26 genera and 18 families. Published host records are compiled in the detailed host list.
BIOLOGY: Adults mate in the morning and tend to mate over a long period during the day, when light intensity is high. Development time, from egg to adult, takes 21-22 days on papaya-based diet at 25°C. Adults start mating about 11 days after their emergence. Population peaks occur in January-February and April-May, corresponding to mango and guava seasons, respectively.
This species is kept in laboratory colonies in Vanuatu, reared on papaya-based diet. Heat tolerance studies have nearly been completed.
ECONOMIC IMPORTANCE: In Vanuatu, it infests 95% of ripe guavas, 64% of ripe Malay apples and 11% of ripe mangos.
MALE LURE: Cue-lure.
QUARANTINE SURVEILLANCE: Cue-lure trapping and regular host fruit surveys of high risk species, especially breadfruit, guava, mango, Tahitian chestnut, Syzygium apples and tropical almond.
OPTIONS FOR RESPONSE (If newly discovered in a country): Increased trapping, increased host fruit sampling, restriction of fruit movement, protein bait spraying, male annihilation.