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Assessing the risks of non-target feeding by the accidentally introduced ragweed leaf beetle, Ophraella communa, to native European plant species
Biological Control ( IF 4.2 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.biocontrol.2020.104356
Benno Andreas Augustinus , Rodolfo Gentili , David Horvath , Ruhollah Naderi , Yan Sun , Anne-Marth Truce Eleonoor Tournet , Urs Schaffner , Heinz Müller-Schärer

Abstract In 2013, the North American oligophagous leaf beetle, Ophraella communa LeSage (Coleoptera: Chrysomelidae), was found in Europe for the first time. Recent studies in Northern Italy and Southern Switzerland record extensive defoliation by O. communa on its preferred host, common ragweed, Ambrosia artemisiifolia L. (Asteraceae, Tribe Heliantheae), and reductions in its flowering and seeding. In some regions in Northern Italy, this has reportedly led to a > 80% depletion in airborne A. artemisiifolia pollen concentrations. The potential for non-target damage by O. communa to closely related native European plant species was previously unknown. During extensive field surveys covering 18 populations of nine potential non-target species, we found adult O. communa on a single plant individual. In a common garden field experiment in Northern Italy in an area with high O. communa densities, leaf damage was highest on two other Asteraceae species, Dittrichia graveolens (L.) Greuter and Pentanema helveticum (Weber) D.Gut.Larr. (both in the Tribe Inuleae). While adult feeding was observed on most of the test plant species, only D. graveolens, which has recently extended its range and is now an invasive species in Western Europe, sustained all life stages of O. communa in the common garden and in laboratory experiments. We found no evidence of substantial non-target effects by O. communa that could potentially threaten populations of European native plant species that are taxonomically closely related to ragweed.

中文翻译:

评估意外引入的豚草叶甲虫 Ophraella commona 对欧洲本土植物物种的非目标喂养风险

摘要 2013年,首次在欧洲发现北美寡食叶甲虫Ophraella community LeSage(鞘翅目:Chrysomelidae)。最近在意大利北部和瑞士南部进行的研究记录了 O.communa 对其首选宿主、普通豚草、Ambrosia artemisiifolia L.(菊科、向日葵部落)的大量落叶,以及开花和播种的减少。据报道,在意大利北部的一些地区,这导致空气中的 A. artemisiifolia 花粉浓度下降了 80% 以上。O.communa 对密切相关的欧洲本土植物物种的非目标损害的可能性以前是未知的。在涵盖 9 个潜在非目标物种的 18 个种群的广泛实地调查中,我们在单个植物个体上发现了成年 O.communa。在意大利北部的一个普通花园田间试验中,在 O.communa 密度高的地区,其他两种菊科植物 Dittrichia Grauter (L.) Greuter 和 Pentanema helveticum (Weber) D.Gut.Larr 的叶片损伤最高。(都在部落 Inuleae)。虽然在大多数测试植物物种上观察到成虫进食,但只有最近扩大其范围并且现在是西欧的入侵物种的 D.graveolens 在公共花园和实验室实验中维持了 O.communa 的所有生命阶段. 我们没有发现 O.communa 的实质性非目标效应的证据,这些效应可能会威胁在分类学上与豚草密切相关的欧洲本地植物物种的种群。) Greuter 和 Pentanema helveticum (Weber) D.Gut.Larr。(都在部落 Inuleae)。虽然在大多数测试植物物种上观察到成虫进食,但只有最近扩大其范围并且现在是西欧的入侵物种的 D.graveolens 在公共花园和实验室实验中维持了 O.communa 的所有生命阶段. 我们没有发现 O.communa 的实质性非目标效应的证据,这些效应可能威胁到在分类学上与豚草密切相关的欧洲本土植物物种的种群。) Greuter 和 Pentanema helveticum (Weber) D.Gut.Larr。(都在部落 Inuleae)。虽然在大多数测试植物物种上观察到成虫进食,但只有最近扩大其范围并且现在是西欧的入侵物种的 D.graveolens 在公共花园和实验室实验中维持了 O.communa 的所有生命阶段. 我们没有发现 O.communa 的实质性非目标效应的证据,这些效应可能会威胁在分类学上与豚草密切相关的欧洲本地植物物种的种群。公共花园和实验室实验中的社区。我们没有发现 O.communa 的实质性非目标效应的证据,这些效应可能会威胁在分类学上与豚草密切相关的欧洲本地植物物种的种群。公共花园和实验室实验中的社区。我们没有发现 O.communa 的实质性非目标效应的证据,这些效应可能会威胁在分类学上与豚草密切相关的欧洲本地植物物种的种群。
更新日期:2020-11-01
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