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In juicy fruits, fluid exudes from the oviposition puncture in the form of a droplet that later dries up and appears as a brown, resinous deposit. On hatching, maggots bore their way into the interior of the host. The activity of first instar larvae is restricted in the area below the oviposition puncture. Second- and third-instar larvae are voracious feeders, go deeper in the host and are mainly responsible for complete deterioration of the host.
Infested host fruits should be plucked or those that fall on the ground should be collected and buried deep in the soil. Proper sanitation in fields and orchards is essential. After harvest no fruit should be left unpicked because they become the source of later infestation.
Wrapping or bagging individual fruit to prevent oviposition by females is also effective.
Due to the variable regulations around (de-)registration of pesticides, we are for the moment not including any specific chemical control recommendations. For further information, we recommend you visit the following resources:
B. zonata is polyphagous. In India, Pakistan and now Egypt, it is an important fruit fly pest and causes severe damage to peach [Prunus persica], guava [Psidium guajava] and mango [Mangifera indica]. Many other fruit and vegetables are also infested by this fly. In certain areas of north India and Pakistan it has been more notorious than Bactrocera dorsalis (Qureshi et al., 1991; Kapoor, 1993). It has a great preference for fruits including peaches and guavas and sometimes the crop is severely damaged. Infestations are often mixed with B. dorsalis. The present status of this fly is quite contrary to earlier reports when dorsalis was mentioned as more aggressive and serious. However, in Sri Lanka B. zonata does not appear to be an important pest (Tsuruta et al., 1997).