Success of an invasive organism depends on the level of biotic resistance from native species. Understanding the mechanism of biotic resistance is critical to the management of invasive species, but such case studies are sparse. Native to parts of Asia and Russia, the red-necked longhorn beetle Aromia bungii (Faldermann) (Coleoptera: Cerambycidae) recently invaded Germany, Italy, and Japan, causing serious damage to Rosaceae trees. To identify any specific mechanism of biotic resistance to A. bungii, we investigated whether Japanese native ants play a role in the biotic resistance through predation, because ants can impact many arthropods as generalist predators. In laboratory experiments, A. bungii eggs or hatchlings were offered to four ant species. Three species exhibited predatory behaviors toward the eggs within 30 min, and obvious damage was confirmed on the eggs within 2 days. Two ant species fatally damaged hatchlings within 30 min. In field surveys, we found a negative correlation between the number of A. bungii frass-ejection holes and the number of collected ants on tree trunks. These results suggested that Japanese native ant fauna can play a certain role in biotic resistance to A. bungii.

中文翻译：

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日本本土蚂蚁捕食侵入性红颈长角甲虫 Aromia bungii（鞘翅目：天牛科）卵和幼龟

入侵生物的成功取决于本地物种的生物抗性水平。了解生物抗性的机制对于入侵物种的管理至关重要，但此类案例研究很少。原产于亚洲和俄罗斯部分地区的红颈长角牛甲虫 Aromia bungii (Faldermann)（鞘翅目：天牛科）最近入侵德国、意大利和日本，对蔷薇科树木造成严重破坏。为了确定对 A. bungii 的生物抗性的任何特定机制，我们调查了日本本土蚂蚁是否通过捕食在生物抗性中发挥作用，因为蚂蚁可以作为多面手捕食者影响许多节肢动物。在实验室实验中，将 A. bungii 的卵或幼龟提供给四种蚂蚁。三个物种在 30 分钟内表现出对卵的捕食行为，并在 2 天内确认鸡蛋有明显损坏。两种蚂蚁在 30 分钟内对幼龟造成致命伤害。在实地调查中，我们发现 A. bungii frass-ejection 孔的数量与树干上收集的蚂蚁数量之间呈负相关。这些结果表明日本本土蚂蚁动物群在对 A. bungii 的生物抗性中可以发挥一定的作用。