The interaction between the entomopathogenic fungus Beauveria bassiana (Balsamo) and the parasitoid Coptera haywardi (Oglobin), as potential biological control agents for Anastrepha obliqua (Macquart) fruit flies, was evaluated under laboratory and semi-protected field cage conditions. The effects of the parasitoids and fungus were individually and jointly assessed in Plexiglas cages. Application of B. bassiana dry conidia to soil produced 40% mortality in A. obliqua adults. However, mortality was lower (21.2%) on evaluation under field cage conditions. According to the multiple decrement life table analysis, the probability of death of A. obliqua was 88% when C. haywardi parasitoids and B. bassiana conidia were used in conjunction, 89% when only C. haywardi parasitoids were released and 23% when only B. bassiana conidia were applied. These results demonstrate that no synergistic, additive or antagonistic interaction took place with the simultaneous use of these natural enemies, since the presence of B. bassiana had no effect on the C. haywardi parasitism. These results indicate that the parasitoid is a better natural enemy for the control of A. obliqua, and show that, although the two biological control agents can be used simultaneously, their joint application will not produce increased control.

中文翻译：

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球孢白僵菌（Hypocreales：虫草科）和海藻鳞翅目（Hymenoptera：Diapriidae）之间的相互作用，用于管理斜An（Diptera：Tephritidae）。

在实验室和半保护性田间笼养条件下，评估了昆虫病原性球孢白僵菌（Balsamo）和寄生性拟翅目鳞翅目（Oglobin）之间的相互作用，作为对拟南芥（Macquart）果蝇的潜在生物防治剂。寄生虫和真菌的影响在有机玻璃笼子中单独或共同评估。B. bassiana干分生孢子在土壤中的应用使A. obliqua成虫死亡率达到40％。但是，在野外笼条件下进行评估时，死亡率较低（21.2％）。根据多次递减寿命表分析，斜when曲霉死亡的概率为88％。C. haywardi寄生虫和B. bassiana分生孢子一起使用，仅释放C. haywardi寄生虫时有89％，而仅应用B. bassiana分生孢子时为23％。这些结果表明，同时使用这些天敌不会发生协同，加性或拮抗作用，因为球孢杆菌的存在对海沃德寄生虫无影响。这些结果表明，寄生蜂是控制更好的天敌A.蠖，并表明，尽管这两个生物控制剂可同时使用，他们的联合应用不会产生增加的控制。