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热效应对侵袭性和本地盆地食淡水鱼的养效率和身体状况

Christophe Benjamin^1,2, Jaclyn Hill^2,1, Anthony Ricciardi^1,3

¹Department of Biology, McGill University, Montreal, QC Canada.

Biological invasions

|February 16, 2026

概括

气候变暖影响入侵物种. 鱼 (Tinca tinca) 比本地白鱼 (Catostomus commersonii) 耐热度更高,这表明在更温暖的水域中竞争动态发生了变化.

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
气候变化生态学生态学

背景情况:

预测气候变暖下的入侵物种影响对于生态风险评估至关重要.
比较功能响应方法量化了捕食者养效率,以预测生态影响.

研究的目的:

为了比较侵袭性 (Tinca tinca) 与本地白 (Catostomus commersonii) 和棕色牛头 (Ameiurus nebulosus) 的养效率和耐热性.
评估预计的变暖温度如何影响这些食鱼类物种的竞争动态和热带影响.

主要方法:

在不同的猎物密度和温度 (18°C和25°C) 中,实验测量了幼虫的食率.
评估鱼的身体状况作为长期健康的衡量标准.
功能响应比率 (FRR) 和相对影响潜力 (RIP) 的计算,以量化热带影响.

主要成果:

白吸的养效率很高,但它们的身体状况在25°C下降,而则尽管最大养率较低,但身体状况稳定.
表现出比棕牛头更高的养效率,尽管两种物种的效率在25°C下降.
与白吸水器相比,显示出更大的热补偿能力.

结论:

气候变暖可能会使侵袭性比本地物种更受欢迎,因为具有优越的耐热性.
生态预测必须包括热适应,以准确预测入侵物种的影响.
温度升温可能会改变竞争互动和生态系统影响,超出直接消费范围.

关键词:

生物入侵生物入侵身体状况身体状况淡水鱼是什么意思?功能性的反应反应.影响预测影响预测.丁卡丁卡丁 (Tinca Tinca) 是一个有趣的小镇.

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