在甲虫中被动的碎片遮蔽提供了对掠夺性的非视觉伪装
K Greig1,2, T R Buckley1, R A B Leschen1
1Manaaki Whenua Landcare Research, 231 Morrin Road, St. Johns, Auckland 1072, New Zealand.
概括
被动碎片遮蔽,一种非视觉伪装,有助于虫在低光下避开捕食者. 这种防御机制减少了检测和攻击的可能性,特别是在自然背景.
科学领域:
- 生态生态学 生态生态学
- 动物行为 动物行为
- 进化生物学 进化生物学
背景情况:
- 视觉伪装得到了很好的研究,但使用非视觉感官的反掠食者防御却不太了解.
- 低光息地经常有捕食者依赖化学,触觉和其他非视觉线索.
- 在低光环境中,可以观察到被动碎片覆盖,即节肢动物在环境碎片中覆盖自己.
研究的目的:
- 调查被动碎片掩饰作为一种非视觉伪装形式.
- 实验测试被动碎片遮蔽对捕食者的有效性.
主要方法:
- 来自新西兰的Zopherid甲虫,以其废物遮蔽而闻名,被用作模型.
- 杂物含量不同的甲虫暴露在寻食物的掠食性身上.
- 分析了检测率,攻击概率和背景相互作用.
主要成果:
- 通过被动的碎片遮蔽,可以显著降低虫甲虫对虫甲虫的检测.
- 碎片的存在降低了攻击的可能性.
- 当碰撞发生在自然基板上时,碎片遮蔽最有效.
结论:
- 被动碎片遮蔽是一种非常有效的非视觉伪装策略.
- 非视觉伪装在低光息地可能比以前想象的更普遍.
- 这项研究强调了非视觉反捕食者适应的重要性.
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