MARA-CABI Joint Laboratory for Bio-safety, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China.
School of Agriculture, Sun Yat-Sen University, Shenzhen, China.
Pest Manag Sci. 2022 Nov;78(11):4679-4688. doi: 10.1002/ps.7088. Epub 2022 Aug 6.
Anastatus japonicus Ashmead (Hymenoptera: Eupelmidae) is a solitary egg endoparasitoid that has been studied for inundative biological control of Halyomorpha halys Stål (Hemiptera: Pentatomidae) in China. In this study, we assessed the reproductive attributes and functional response of Anastatus japonicus on a factitious host, Antheraea pernyi (Guérin-Méneville) (Lepidoptera: Anthelidae) at 25 ± 1 °C, 70 ± 5% relative humidity and 16 h:8 h light/dark photoperiod.
The mean lifetime fecundity of Anastatus japonicus females was 404.3 progeny produced over an average oviposition period of 42.3 days. The sex ratio of adult progeny was slightly male biased (51.2%), whereas more female progeny were produced before day 20 of a female's life. Single 1-day-old mated Anastatus japonicus females exhibited a type II functional response to increasing host densities (1-50 eggs), with an inverse host density-dependent pattern of percent parasitism. The upper limit to the daily attack rate was estimated as 7.6 Antheraea pernyi eggs. Furthermore, mutual interference among Anastatus japonicus females occurred when increasing densities of parasitoids (1, 2, 4, 8, 16) were exposed to 30 host eggs.
Laboratory functional response result revealed that individual Anastatus japonicus might be unable to respond effectively to increasing host density in the field, which could be compensated by releasing larger numbers of wasps. Strong mutual interference among foraging Anastatus japonicus females should be considered in any future inundative biological control programs for the sustainable management of Halyomorpha halys or other host insect pests. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
日本方头甲（膜翅目：扁甲科）是一种单寄生性的卵内寄生蜂，在中国被用于稻绿蝽（半翅目：蝽科）的大量生物防治。本研究在 25±1°C、70±5%相对湿度和 16：8 h 光照/黑暗光周期下，评估了日本方头甲在人工饲养的柞蚕（鳞翅目：大蚕蛾科）上的繁殖特性和功能反应。
日本方头甲雌蜂的平均终生产卵量为 404.3 头，平均产卵期为 42.3 天。成虫后代的性别比例略偏向雄性（51.2%），但在雌蜂生命的第 20 天之前，会产生更多的雌性后代。单独 1 天大的交配日本方头甲雌蜂对增加的宿主密度（1-50 个卵）表现出 II 型功能反应，表现出一种逆宿主密度的寄生率模式。每日攻击率的上限估计为 7.6 个柞蚕卵。此外，当增加的寄生蜂密度（1、2、4、8、16）暴露在 30 个宿主卵中时，日本方头甲雌蜂之间会发生相互干扰。
实验室功能反应结果表明，单个日本方头甲可能无法对田间增加的宿主密度做出有效反应，这可以通过释放更多的黄蜂来弥补。在稻绿蝽或其他宿主害虫的可持续管理的未来大量生物防治计划中，应考虑觅食日本方头甲雌蜂之间的强烈相互干扰。© 2022 作者。害虫管理科学由 John Wiley & Sons Ltd 代表化学工业协会出版。
