绿灰螟虫的幼虫发育与寄生:生物防治的意义。

IF 1.5 3区 农林科学 Q2 ENTOMOLOGY
Heather L Callahan, Jian J Duan, Douglas W Tallamy
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引用次数: 0

摘要

绿灰螟(Agrilus planipennis Fairmaire)是一种侵入性的蛀木甲虫,它已经杀死了北美数百万棵灰树(蜡树属)。2014年,在俄亥俄州发现了祖母绿灰螟虫攻击白色条纹树(Chionanthus virginicus L.),表明寄主范围扩大。从那时起,在其他州也发现了白叶缘树的翠绿灰螟虫活动,这对自然和管理生态系统中的这种本土树木构成了潜在威胁。虽然绿灰螟虫可以在白树中完成完整的生命周期,但关于绿灰螟虫在这种新型寄主中与灰螟的比较成功,或引入的生物防治剂如何反应的研究很少。我们在美国特拉华州进行了实验室和田间侵染,比较了翠绿灰螟幼虫的发育时间和幼虫的相关寄生蜂的反应。在实验室侵染的白桦尺蠖中,祖母绿白桦尺蠖幼虫发育缓慢,在14周的实验室研究中,没有幼虫达到成熟的j形幼虫期(JL),而在白桦尺蠖中,所有存活的幼虫都发育到j形幼虫期。田间试验结果表明,白叶树的绿灰螟虫发育迟缓,成活率降低,在2个生长季节中,158只幼虫中只有1只达到JL期。在实验室和田间侵染的白树中,绿灰螟幼虫没有被寄生,这可能是因为这种寄主的幼虫很少到达适合幼虫寄生的龄期。总的来说,这项研究表明,白色条纹树的祖母绿灰螟虫种群不能自我维持,尽管应该使用更大的条纹树材料进行进一步的研究,因为小尺寸可能会对幼虫的生存产生负面影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Larval development and parasitism of emerald ash borer in Chionanthus virginicus (Oleaceae): Implications for biological control.

Emerald ash borer (Agrilus planipennis Fairmaire) is an invasive wood-boring beetle that has killed millions of ash trees (Fraxinus spp.) across North America. In 2014, emerald ash borer was discovered attacking white fringetrees (Chionanthus virginicus L.) in Ohio, indicating a host range expansion. Since then, emerald ash borer activity in white fringetree has been confirmed in additional states, posing a potential threat to this native tree in natural and managed ecosystems. Though emerald ash borer can complete a full life cycle in white fringetree, there has been little research into the comparative success with which emerald ash borer develops in this novel host versus ash, or how introduced biocontrol agents will respond. We conducted laboratory and field infestations of white fringetree and ash in Delaware to compare the timing of emerald ash borer larval development and the associated response of larval parasitoids. In lab-infested white fringetree bolts, emerald ash borer developed slowly, with no larvae reaching the mature J-shaped larval stage (JL) during the 14-wk lab study, compared with all surviving larvae developing to the J-shaped larval stage in ash. Field results showed delayed emerald ash borer development and reduced survival in white fringetree, with just 1 larva out of 158 reaching the JL stage over 2 growing seasons. There was no parasitism of emerald ash borer larvae in lab- or field-infested white fringetree, likely because few larvae in this host reached instars suitable for larval parasitism. Overall, this study suggests that emerald ash borer populations in white fringetree are not self-sustaining, though further studies should be conducted using larger fringetree material, as small sizes may negatively impact larval survival.

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来源期刊
Environmental Entomology
Environmental Entomology 生物-昆虫学
CiteScore
3.90
自引率
5.90%
发文量
97
审稿时长
3-8 weeks
期刊介绍: Environmental Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes reports on the interaction of insects with the biological, chemical, and physical aspects of their environment. In addition to research papers, Environmental Entomology publishes Reviews, interpretive articles in a Forum section, and Letters to the Editor.
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