The performance of the tiger-fly Coenosia attenuata Stein was examined when fed on larvae of the buzzer midge, Chironomus plumosus (Linnaeus), and combination of buzzer midge and fungus gnat, Bradysia impatiens (Johannsen). Significant differences were observed in the developmental time of larvae, body length, and body weight of pupae and adults of C. attenuata in response to species and preservation status of prey but not in response to instar and prey number of C. plumosus. Most biological characteristics except for developmental time of pupae, length of female pupae, survival rate from the 5th day to pupation, and adult emergence improved for tiger-fly larvae fed on live B. impatiens larvae in the first four days and live C. plumosus larvae from the fifth day to pupation compared to those fed on live C. plumosus larvae in all larval stages. When live alternative prey were replaced with the frozen prey, the developmental time of larvae was prolonged, and adult male body length, survival rate from the fifth day to pupation, and the percentages of pupation and adult emergence decreased. The survival rate of larvae in the first 4 days and percentage of pupation improved with decreased alternative prey instar and increased alternative prey number. These results indicate live C. plumosus larvae can serve as an alternative food source for mass rearing of C. attenuata. As an alternative food source, C. plumosus larvae provide significant advancements for the application of tiger-fly in banker media system and/or open rearing.

中文翻译：

---

虎蝇 Coenosia attenuata Stein 在椰壳基质中的替代猎物 Chironomusplomosus (L.) 幼虫上饲养的性能

当以蜂鸣蠓幼虫 Chironomus plumosus (Linnaeus) 以及蜂鸣蠓和真菌蚱蜢 (Johannsen) 的组合为食时，研究了虎蝇 Coenosia attenuata Stein 的表现。C. attenuata 幼虫的发育时间、体长和蛹和成虫的体重随猎物的种类和保存状况的不同而存在显着差异，但与幼虫的龄期和猎物数量无关。除了蛹的发育时间、雌性蛹的长度、从第 5 天到化蛹的存活率和成虫羽化以外的大多数生物学特征在前四天以活凤仙花幼虫和活凤仙花为食的虎蝇幼虫得到改善从第五天到化蛹的幼虫与所有幼虫阶段以活的 C.pumosus 幼虫为食的幼虫相比。用冷冻猎物代替活体替代猎物后，幼虫的发育时间延长，成年雄性体长、第5天至化蛹的存活率、化蛹和成虫羽化的百分比降低。随着替代猎物龄的减少和替代猎物数量的增加，前4天幼虫的存活率和化蛹百分比得到提高。这些结果表明活的 C.pumosus 幼虫可以作为大量饲养 C. attenuata 的替代食物来源。作为一种替代食物来源，C. plumosus 幼虫为虎蝇在银行家媒体系统和/或开放式饲养中的应用提供了重大进步。从第5天到化蛹的存活率，化蛹和成虫羽化的百分比下降。随着替代猎物龄的减少和替代猎物数量的增加，前4天幼虫的存活率和化蛹百分比得到提高。这些结果表明活的 C.pumosus 幼虫可以作为大量饲养 C. attenuata 的替代食物来源。作为一种替代食物来源，C. plumosus 幼虫为虎蝇在银行家媒体系统和/或开放式饲养中的应用提供了重大进步。从第5天到化蛹的存活率，化蛹和成虫羽化的百分比下降。随着替代猎物龄的减少和替代猎物数量的增加，前4天幼虫的存活率和化蛹百分比得到提高。这些结果表明活的 C.pumosus 幼虫可以作为大量饲养 C. attenuata 的替代食物来源。作为一种替代食物来源，C. plumosus 幼虫为虎蝇在银行家媒体系统和/或开放式饲养中的应用提供了重大进步。羽扇豆幼虫可作为大量饲养 C. attenuata 的替代食物来源。作为一种替代食物来源，C. plumosus 幼虫为虎蝇在银行家媒体系统和/或开放式饲养中的应用提供了重大进步。羽扇豆幼虫可作为大量饲养 C. attenuata 的替代食物来源。作为一种替代食物来源，C. plumosus 幼虫为虎蝇在银行家媒体系统和/或开放式饲养中的应用提供了重大进步。