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Bioecology of Anagyrus saccharicola (Hymenoptera: Encyrtidae), a parasitoid of the pink sugarcane mealybug Saccharicoccus sacchari (Hemiptera: Pseudococcidae)
Bulletin of Entomological Research ( IF 1.9 ) Pub Date : 2020-12-21 , DOI: 10.1017/s0007485320000723
Ivana Lemos Souza , Hágabo Honorato de Paulo , Érica Ayumi Taguti , Nilza Maria Martinelli

Parasitoids can be used as biological agents of pest control. Anagyrus saccharicola Timberlake (Hymenoptera: Encyrtidae) is a parasitoid of the pink sugarcane mealybug Saccharicoccus sacchari (Cockerell) (Hemiptera: Pseudococcidae). Although this mealybug is present in all sugarcane-producing countries, there is limited information regarding this pest and its parasitoid. Aiming to elucidate information on bioecological parameters of A. saccharicola, were evaluated the survival of parasitoid females and males at three temperatures, the host preference of the parasitoid, and the fecundity and longevity of the host. In addition, the parasitism rate of A. saccharicola was estimated based on three factors, feeding, mating, and time. Survival was evaluated at 20, 25, and 30°C. Host preference was conducted on 15-, 20-, and 30-day-old mealybugs. And the parasitism rate was evaluated in fed and unfed, mated and unmated parasitoids and with 24 h and newly emerged. The temperature of 20°C was the most favorable for parasitoid survival. Parasitism occurred at all evaluated ages of the mealybug; however, the preference was for those that were 30-days-old. The parasitized mealybugs longevity was approximately 8 additional days after parasitization, and non-parasitized mealybugs lived for an additional 20 days for mealybugs aged 30 and 20 days at the outset of the tests, and a further 13 days for the 15 days. Feeding and mating after 24 h of emergence resulted in a higher parasitism rate. These findings can contribute to more efficient rearing of A. saccharicola and in the planning of the biological control of S. sacchari in the integrated pest management programs.

中文翻译:

Anagyrus saccharicola(膜翅目:Encyrtidae)的生物生态学,粉红色甘蔗粉蚧 Saccharicoccus sacchari(半翅目:Pseudococcidae)的寄生蜂

寄生蜂可用作害虫防治的生物制剂。糖葫芦Timberlake (膜翅目: Encyrtidae) 是粉红色甘蔗粉蚧的寄生蜂糖酵母(Cockerell)(半翅目:Pseudococcidae)。尽管这种粉蚧存在于所有甘蔗生产国,但关于这种害虫及其寄生蜂的信息有限。旨在阐明生物生态学参数的信息一种.糖精, 分别评估了寄生蜂雌性和雄性在三个温度下的存活率、寄生蜂的寄主偏好以及寄主的繁殖力和寿命。此外,寄生率一种.糖精估计是基于三个因素,喂养,交配和时间。在 20、25 和 30°C 下评估存活率。对 15 天、20 天和 30 天大的粉蚧进行宿主偏好。对摄食和未摄食、交配和未交配的寄生蜂以及24 h和新出寄生蜂的寄生率进行了评价。20°C的温度最有利于寄生蜂的生存。在粉蚧的所有评估年龄都发生了寄生现象;但是,偏好是那些 30 天大的。被寄生的粉蚧在寄生后的寿命大约增加了 8 天,而在测试开始时,30 天和 20 天的粉蚧的非寄生粉蚧寿命增加了 20 天,15 天的寿命又延长了 13 天。出苗24小时后取食和交配导致较高的寄生率。一种.糖精并在生物防治规划中S. sacchari在综合虫害管理计划中。
更新日期:2020-12-21
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