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海洋热浪和变暖对海藻微生物群的影响影响了食用相互作用

Louise C Castro^1,2,3, Adriana Vergés^1,2,4, Sandra C Straub⁵

¹Centre for Marine Science and Innovation, School of Biological, Earth and Environmental Sciences, The University of New South Wales, Sydney, New South Wales, Australia.

Molecular ecology

|January 17, 2024

概括

海洋变暖改变了海藻微生物群,影响了草食动物的牧场. 这项研究揭示了物种特异性对鱼和鱼对变化海洋条件的反应的影响.

科学领域:

海洋生态海洋生态学
微生物生态学微生物生态学
气候变化生物学气候变化生物学

背景情况:

海洋变暖和海洋热浪 (MHWs) 推动热带草食动物范围的扩大,威胁到温带珊瑚礁社区.
海藻森林是重要的息地,它们的减少影响了珊瑚礁的生物多样性.
在变暖下,海藻相关微生物群的变化可能会调解草食动物和海藻的相互作用,但经验数据很少.

研究的目的:

实验评估模拟海洋变暖和MHWs对主导的温带海藻及其相关微生物群的影响.
量化这些环境变化对一个关键的热带草食动物牧场的影响.
为了确定改变的微生物群是否会改变草食动物的食行为.

主要方法:

实验模拟持续的海洋变暖和MHWs.
在两个主要的温带海藻物种 (Ecklonia radiata和Sargassum linearifolium) 中分析微生物群组成.
热带海Tripneustes gratilla对经过处理的海藻进行了草食率的量化.

主要成果:

加热处理使Ecklonia radiata的微生物群富含与疾病相关的微生物.
萨尔加索姆线性的微生物群不受温度变化的影响.
当其微生物群因变暖而改变时,观察到Tripneustes gratilla对Ecklonia radiata的消费增加.

结论:

海藻全生物对变暖和MHW的反应是特定于物种的.
在变暖的条件下,Ecklonia radiata中变化的微生物群可以增加草食动物的放牧压力.
海藻微生物群的变化可能是推动海洋变暖中藻-草食动物相互作用变化的关键机制.

关键词:

这是Ecklonia radiata的原始植物.萨尔加索姆 (Sargassum linearifolium) 是一种天然天然气,可以在水中发现.气候变化气候变化气候变化宏观藻类是一种宏观藻类.微生物组是一个微生物组.热带化热带化

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