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Shinji Sugiura¹, Masakazu Hayashi²

¹Graduate School of Agricultural Science, Kobe University, Kobe, Hyogo, Japan.

|April 22, 2024

概括

本地旋转虫可以抵御本地青,但不能抵御入侵的美国公. 这表明牛对日本本土的昆虫种群构成重大掠食风险.

科学领域:

生态生态学生态生态学
侵入性物种生物学生物学
化学生态化学生态学

背景情况:

本地昆虫进化了对本地捕食者的防御,但这些可能会对入侵物种失败.
美国公牛青 (Aquarana catesbeiana) 是一种入侵性掠食者,在全球范围内影响着本土动物群.
旋转虫 (Coleoptera:Gyrinidae) 拥有化学防御,但它们对虫的有效性尚不清楚.

研究的目的:

调查日本本土旋转虫对本土和入侵青的防御效果.
为了确定旋转虫的化学防御能否保护它们免受虫的掠食.

主要方法:

基于实验室的养试验比较本地旋转甲虫 (Gyrinus japonicus,Dineutus orientalis) 与本地青 (Pelophylax nigromaculatus) 和入侵性美国公 (A. catesbeiana).
对青捕食尝试和甲虫排斥率的行为观察.

主要成果:

皮洛菲拉克斯 (Pelophylax nigromaculatus) 拒绝了40%的本地旋转甲虫,这表明部分防御有效性.
Aquarana catesbeiana消耗了所有测试的旋转甲虫,没有甲虫化学物质的防御作用.
本地旋转虫的防御对入侵的牛无效.

结论:

侵入性美国公牛青对日本本土的旋转虫构成重大掠食威胁.
对雄鹿青缺乏防御,凸显了引入的掠食者对本地昆虫种群的生态影响.

关键词:

水生昆虫水生昆虫雄牛青雄牛青化学防御的化学防御方法青青青青这种动物叫Gyrinidae.引入的掠食者是引入的掠食者.利索巴特类的猫科动物catesbeianus.本地物种是本地物种.

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