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在临界前:考虑气候变化对无刺蜂飞行性能造成的次致命影响

Carmen Rose Burke da Silva¹, Lachlan David Macnaughtan², Oliver William Griffith²

¹Pollinator Futures Research Centre, School of Natural Sciences, Macquarie University, North Ryde, New South Wales, Australia; School of Natural Sciences, Macquarie University, North Ryde, New South Wales, Australia.

Journal of thermal biology

|October 15, 2025

概括

在达到临界热极限之前,气候变化对蜜蜂产生影响. 热性能曲线显示,虽然澳大利亚在高温下飞行更好,但由于暴露于热量,其范围可能会更多地缩小.

科学领域:

生态生态学生态生态学
气候变化生物学气候变化生物学
动物生理学动物生理学

背景情况:

种类对气候变化的脆弱性通常使用临界热极限 (CTMAX) 来评估.
然而,气候变化在达到临界热极限之前就影响了生态相关的特征.
热性能曲线 (TPC) 提供了一种评估温度对飞行性能等特征的影响的方法.

研究的目的:

评估温度如何影响两个重要的农业本土无刺蜂种的飞行表现:澳大利亚北方蜂 (Austroplebeia australis) 和碳化蜂 (Tetragonula carbonaria).
将这些物种的TPC与它们的地理范围进行比较,以预测气候变化脆弱性.
了解不同的热公差和环境条件如何影响潜在范围的变化.

主要方法:

在七个温度 (1842°C) 上测试了澳大利亚和碳化四角的热飞行性能.
对比了每个物种的热性能曲线 (TPC).
分析了物种的热最佳值与其地理范围内的温度之间的重叠.

主要成果:

澳大利亚人表现出更广泛的TPC和更高的热最佳值,而不是碳化四角.
这反映了A. australis.所经历的更广泛的环境温度范围和更高的平均条件.
与T. carbonaria相比,在A. australis的范围中,更大的比例超过了它的热最佳值.

结论:

澳大利亚,尽管更高的耐热性,可能面临范围收缩,由于超过其热量最佳在其范围的更热的部分.
碳化四角的范围较窄和热性能表明其对气候变化的脆弱性不同.
TPC提供了对物种脆弱性和气候变化下的潜在范围转移的关键见解,超出了关键热极限.

关键词:

气候变化气候变化气候变化逃跑反应的逃跑反应飞行性能飞行性能地理范围范围地理范围范围没有刺的蜜蜂.热性能曲线的热性能曲线

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