Development of methods for the field evaluation of Oobius agrili (Hymenoptera: Encyrtidae) in North America, a newly introduced egg parasitoid of the emerald ash borer (Coleoptera: Buprestidae)

被引:29
作者
Duan, Jian J. [1 ]
Bauer, Leah S. [2 ]
Ulyshen, Michael D. [3 ]
Gould, Juli R. [4 ]
Van Driesche, Roy [5 ]
机构
[1] USDA ARS, Beneficial Insects Intro Res Unit, Newark, DE 19713 USA
[2] US Forest Serv, USDA, No Res Stn, E Lansing, MI 48823 USA
[3] Michigan State Univ, Dept Entomol, E Lansing, MI 48824 USA
[4] USDA, APHIS PPQ, Buzzards Bay, MA 02542 USA
[5] Univ Massachusetts, Dept Plant Soil & Insect Sci, Amherst, MA 01003 USA
关键词
Classical biological control; Invasive; Exotic; Forest insect pests; Wood borers; NATURAL ENEMIES; PLANIPENNIS COLEOPTERA; CHINA;
D O I
10.1016/j.biocontrol.2010.11.009
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
A field study was conducted in forested plots near Lansing, Michigan in 2008 and 2009 to evaluate the newly introduced egg parasitoid Oobius agrili Zhang and Huang (Hymenoptera: Encyrtidae) for control of the invasive emerald ash borer (EAB), Agrilus planipennis Fairmaire (Coleoptera: Buprestidae). To measure parasitism by O. agrili, laboratory-reared "sentinel EAB eggs" were deployed under bark flaps on trunks of selected ash trees in both parasitoid-release and non-release control plots. In addition, naturally occurring EAB eggs were collected in both parasitoid-release and control plots to measure parasitism. While no parasitism was detected with either sentinel or naturally occurring EAB eggs in control plots in either 2008 or 2009, a low level of parasitism by O. agrili was detected in the parasitoid-release plots in both artificially deployed sentinel eggs (<= 1%) and field-collected, naturally occurring eggs (1.1-4.2%) in both years. In addition to losses due to parasitism by O. agrili, a large proportion (37-52%) of the field-deployed sentinel eggs disappeared, possibly due to predators such as ants, in both parasitoid-release and control plots. While no statistical differences in parasitism by O. agrili were detected between parasitoid release and control plots, other sources of egg mortality such as disappearance due to predation on eggs, varied significantly across study sites in both 2008 and 2009. The relevance of these findings to future release and evaluation strategies for O. agrili for biological control of the invasive emerald ash borer in the US is discussed. Published by Elsevier Inc.
引用
收藏
页码:170 / 174
页数:5
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