Fruit flies (Tephritidae) have been reported to be a serious pest worldwide. In Mauritius, the major fruit fly species of economic and quarantine importance in agricultural production are Bactrocera zonata (Saunders), Zeugodacus cucurbitae (Coquillett) and Bactrocera dorsalis (Hendel). In line with the government's policy for sustainable and organic agriculture under the challenge of climate change, the Sterile Insect Technique (SIT) is being investigated as an alternative to chemical control. For successful cost-effective SIT programme island-wide, the production of competitive and sterile individuals for release is a key requirement. The aim of this study was to investigate the life cycle parameters of B. zonata to evaluate the feasibility of optimum mass rearing of this species. It was observed that B. zonata has a pre-oviposition period of 8 days, an oviposition duration of 51 days, the number of eggs per female along the complete oviposition period was 705 eggs and the peak egg hatchability varied from 88.5 to 91.5 %. The study showed that egg collection could be started as from day 13. The findings demonstrated that 5 weeks of egg collection is optimal for a rearing facility of B. zonata and production cages should be discarded on day 41. It was found that B. zonata has a net reproductive rate of 300.04 females and a mean generation time of 28.73 days. Given a positive Ro and a short T, it can be concluded that mass rearing of B. zonata is economically viable. Within a short period a laboratory population of this species for mass rearing can be established.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 29 • No. 2