B.zonata, B.dorsalis, B. papayae, B. carambolae, B. invadens, B. correcta, B.tau etc.,
In general, the life cycle of Bactrocera species lasts from 21 to 179 days. There are 8 to 10 generations in a year. The egg incubation
period has been reported to be 1.0 to 5.1 days depends on the cucurbits. The larval period lasts for 3 to 21 days, depending on temperature
and the host. The full-grown larvae come out of the fruit by making one or two exit holes for pupation in the soil. Eggs are laid below the
skin of the host fruit. These hatch within 1-3 days and the larvae feed for another 9-35 days. Pupation is in
the soil under the host plant and adults emerge after 1-2 weeks and adults occur throughout the year. Oriental fruit flies are fast
growing (the life cycle takes about 16 days in summer). females typically lay 1500 eggs in their lives, but can lay up to 3000.
Bactrocera dorsalis has a wide host range on over 150 fruit and vegetable crops like Cashew, Mango, Plum, Pear, Papaya, Almond, Avocado,
Apple, Guava, Peach, Orange, Lemon, Grapefruit, Sweet orange, Kumquat, Custard apple, Pomegranate, Fig, Jujube, and Cucurbit crops like
Watermelon, Pumpkin, Ivy gourd, Cucumber and Bottle Gourd and Solanaceae crops like Pepper, Tomato, Eggplant etc.,
Females lay eggs under ripe fruit’s skin (although they also will lay in green fruit) and larvae destroy the fruit by feeding on it as
they develop. The females lay the eggs 2 to 4 mm deep in the fruit pulp, and the maggots feed inside the developing fruits. At times,
the eggs are also laid in the corolla of the flower, and the maggots feed on the flowers. The fruits attacked in early stages fail to develop
properly, and drop or rot on the plant. Since, the maggots damage the fruits internally.
Larval feeding in fruits is the most damaging. Damage usually consists of breakdown of tissues and internal rotting associated with maggot
infestation, but this varies with the type of fruit attacked. Infested young fruit becomes distorted, callused and usually drop; mature attacked
fruits develop a water soaked appearance. The larval tunnels provide entry points for bacteria and fungi that cause the fruit to rot.
When only a few larvae develop, damage consists of an unsightly appearance and reduced marketability because of the egg laying punctures
or tissue break down due to the decay.
ETL for Bactrocera species is 10-15 No’s of flies per trap per day.
Use 8 No’s Catch-a-fly Traps per acre at 1-week before flowering for best results.
Recommended trap model: Catch-A-Fly™ Fruit fly trap.
Recommended for: Horticulture fruit crops i.e, Mango, Guava, Papaya, Citrus, Orange, pomegranate…etc and
Cucurbit crops like Watermelon, Pumpkin, Ivy gourd, Cucumber and ridge gourd…etc.,