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Effects of cold storage on life‐history traits of Aphidius matricariae
Entomologia Experimentalis et Applicata ( IF 1.4 ) Pub Date : 2020-08-26 , DOI: 10.1111/eea.12958
Mehran Rezaei 1 , Ali A. Talebi 1 , Yaghoub Fathipour 1 , Javad Karimzadeh 2 , Mohammad Mehrabadi 1 , Gadi V.P. Reddy 3
Affiliation  

Aphidius matricariae Haliday (Hymenoptera: Braconidae) is a polyphagous solitary endoparasitoid, attacking more than 40 species of aphids. This parasitoid is an important commercial product of many companies that produce biological control agents. Storage at low temperature increases the shelf life of many biocontrol agents, allowing companies to provide a steady and sufficient supply of insects for biocontrol programs. In the current study, the effects of cold storage of 1‐day‐old host mummies with A. matricariae for various time periods (5, 10, 15, 20, and 30 days) at 5 °C on the parasitoid’s key life‐history traits were investigated. Parameters assessed after storage included adult emergence rate, offspring sex ratio, adult longevity, oviposition period, fecundity, and life‐table parameters (R0, r, λ, T, and DT). Our results showed that the mummies of A. matricariae could be stored at 5 °C for 5 days without loss of quality and for 10–15 days with minimal reduction in quality (e.g., some reduction in adult longevity and R0). If parasitoids were stored for >15 days, quality was more strongly affected. In conclusion, A. matricariae pupae could be stored at 5 °C for up to 15 days without significant negative post‐storage effects on fitness of the parasitoid. These results could be used to improve the planning of mass rearing and mass release of A. matricariae in augmentative biological control programs.

中文翻译:

冷藏对母蚜生活史性状的影响

Aphidius matricariae Haliday(膜翅目:茧蜂科)是一种多食性单行内寄生蜂,攻击 40 多种蚜虫。这种寄生蜂是许多生产生物防治剂的公司的重要商业产品。低温储存可延长许多生物防治剂的保质期,使公司能够为生物防治计划提供稳定和充足的昆虫供应。在目前的研究中,1 日龄寄主木乃伊与母蝇不同时间段(5、10、15、20 和 30 天)在 5°C 下冷藏对寄生物关键生活史的影响性状进行了调查。储存后评估的参数包括成虫羽化率、后代性别比、成虫寿命、产卵期、繁殖力和生命表参数(R0、r、λ、T 和 DT)。我们的结果表明,A. matricariae 的木乃伊可以在 5 °C 下储存 5 天而不会降低质量,并且可以储存 10-15 天而质量降低最小(例如,成虫寿命和 R0 有所降低)。如果寄生物被储存 > 15 天,质量会受到更强烈的影响。总之,A. matricariae 蛹可以在 5°C 下储存长达 15 天,而不会对寄生物的适应性产生显着的负面影响。这些结果可用于改进在增强生物控制计划中大规模饲养和大规模释放 A. matricariae 的计划。质量受到的影响更大。总之,A. matricariae 蛹可以在 5°C 下储存长达 15 天,而不会对寄生物的适应性产生显着的负面影响。这些结果可用于改进在增强生物控制计划中大规模饲养和大规模释放 A. matricariae 的计划。质量受到的影响更大。总之,A. matricariae 蛹可以在 5°C 下储存长达 15 天,而不会对寄生物的适应性产生显着的负面影响。这些结果可用于改进在增强生物控制计划中大规模饲养和大规模释放 A. matricariae 的计划。
更新日期:2020-08-26
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