利用美国东部非靶种对斑点灯笼蝇卵寄生蜂东方小夜蛾寄主范围的研究

Hannah J. Broadley, Steven J. Sipolski, D. Pitt, K. Hoelmer, Xiao-yi Wang, L. Cao, L. Tewksbury, Tyler J. Hagerty, C. Bartlett, Alana D. Russell, Yunke Wu, Shannon C. Davis, J. M. Kaser, J. Elkinton, J. Gould
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引用次数: 2

摘要

斑点灯笼蝇(Lycorma delicatula)是2014年在美国宾夕法尼亚州发现的一种入侵飞虱,尽管采取了隔离和控制措施,但它已蔓延到周边许多州,预计还会进一步蔓延。传统的(进口)生物防治方案将有助于美国东部地区的长时间管理,在其原产地中国,一种卵寄生蜂(膜翅目:姬蜂科)造成了严重的死亡率。东方Anastatus orientalis由多个单倍型组成,这些单倍型在重要的生物学参数上存在差异。为了确定东方沙蚕C单倍型寄主的生理范围,我们进行了无选择和选择测试。对18科6目36种昆虫的非靶卵进行无选择测试,结果表明,该单倍型在生理上可在多种寄主昆虫卵中发育,包括蛾科、蛾科、蝽科和蛾科。在无选择试验中受到攻击的16种物种中,有10种在选择试验中也受到攻击。在无选择和选择试验中,非目标卵块上的子代产量显著低于同时运行的对照组。对于被攻击并产生雌性后代的非目标物种,这些雌性黄蜂能够以与从L. delicatula卵饲养的对照雌性相同的速度产生自己的后代。较大的寄主卵对应于增加的雌性偏向性比例的后代,这表明怀孕的雌性选择它们作为受精卵。这些研究结果表明,单倍型C偏向于寄生于纤毛虫的卵群,但也能在一些非靶种中发育。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessing the host range of Anastatus orientalis, an egg parasitoid of spotted lanternfly (Lycorma delicatula) using Eastern U.S. non-target species
The spotted lanternfly, Lycorma delicatula (Hemiptera: Fulgoridae), an invasive planthopper discovered in Pennsylvania, U.S. in 2014, has spread to many surrounding states despite quarantines and control efforts, and further spread is anticipated. A classical (importation) biological control program would contribute to the long-term management of L. delicatula in the eastern U.S. In its native range of China, Anastatus orientalis (Hymenoptera: Eupelmidae), an egg parasitoid, causes significant mortality. Anastatus orientalis consists of multiple haplotypes that differ in important biological parameters. To delineate the physiological host range of A. orientalis Haplotype C, we completed no-choice and choice testing. No-choice testing of non-target eggs from 36 insect species spanning six orders and 18 families showed that physiologically this haplotype of A. orientalis can develop in a variety of host species eggs from the families Coreidae, Fulgoridae, Pentatomidae, and Saturniidae. Ten of the 16 species that were attacked in the no-choice tests were also attacked in the choice tests. The production of progeny on non-target egg masses was significantly lower than on the controls (L. delicatula egg masses run simultaneously) in the no-choice and choice tests. For the non-target species that were attacked and resulted in female wasp progeny, these females were able to produce their own progeny at the same rate as control females that were reared from the L. delicatula eggs. Larger host eggs corresponded to an increased female-biased sex ratio of the progeny, suggesting that gravid females select them for fertilized eggs. Results from these studies suggest that A. orientalis Haplotype C prefers to parasitize L. delicatula egg masses but is capable of developing in some non-target species.
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