|LI, FEI - University Of Maryland|
|WANG, XIAO-YI - Chinese Academy Of Forestry|
|CAO, LING-MING - Chinese Academy Of Forestry|
|YANG, ZHONG-QI - Chinese Academy Of Forestry|
|GOULD, JULI - Animal And Plant Health Inspection Service (APHIS)|
Submitted to: Journal of Economic Entomology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 3/15/2020
Publication Date: 5/12/2020
Citation: Li, F., Wang, X., Cao, L., Yang, Z., Gould, J.R., Duan, J.J. 2020. Discovery of parasitoids of Anoplophora glabripennis (Coleoptera: Cerambycidae) and their seasonal abundance in China using sentinel host eggs and larvae. Journal of Economic Entomology. 2020: 1–10. https://doi.org/10.1093/jee/toaa068.
Interpretive Summary: The Asian longhorned beetle (ALB) is a high-risk invasive wood-boring insect pest native to China. Since it was first detected North America in the 1990s, ALB has been the target of quarantines and eradication programs because of its potential to damage many species of hardwood trees. With Chinese Academy of Forestry and APHIS cooperators, we surveyed the natural enemies of ALB eggs and larvae at several locations in China from 2015-2018. Using ALB egg- and larvae-infested willow logs as sentinels, we discovered twelve species of natural enemies (parasitic wasps) attacking ALB eggs or larvae. These natural enemies contributed to mortality of ALB eggs or larvae at several sites in northern (Beijing and Jilin province) and southern (Shanghai) areas of China. Some of these natural enemies could be considered for potential introduction for biocontrol of ALB in the U.S.
Technical Abstract: Asian longhorned beetle (ALB), Anoplophora glabripennis Motschulsky (Coleoptera: Cerambycidae), is a high-risk invasive forest pest worldwide. Biological control is a promising strategy against ALB, but few studies have reported the natural enemies of ALB eggs and early instar larvae in its native range in Asia. We deployed sentinel logs infested with ALB eggs or newly hatched (early instar) larvae during the growing season in willow and poplar plantations in Beijing, Shanghai, and Hunchun (Jilin Province), China from 2015 to 2018 and then observed the ALB egg and larval parasitism. Twelve species of hymenopteran parasitoids were recovered from the ALB infesting sentinel logs. In Beijing, the total parasitism rates were 11.1%, 5.8%, 13.5% and 11.5% from 2015 to 2018. In Shanghai, these rates ranged from 3.3% to 9.5% during the same years. Oxysychus sp. and Bracon plamitibiae were the most and second most abundant parasitoid species, which should be studied further for their potential use in ALB biocontrol.