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Updated: Jun 4, 2025

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昼间温度变化加剧了南对Trochus pyramis的影响 诞生在温暖的海洋中
Jingying Ren1, Yongliang Liu2, Xin Liu3
1Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264117, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
Journal of hazardous materials
|January 5, 2025
概括
昼间温度变化 (DTV) 对热带类动物的表素 (PHE) 毒性产生影响. 在28°C时,DTV减轻了PHE效应,但在31°C时则使其恶化,突显了对珊瑚礁的风险.
科学领域:
- 海洋生物学 海洋生物学
- 生态毒理学 生态毒理学
- 气候变化科学 气候变化科学
背景情况:
- 海水温度上升和日间温度变化 (DTV) 是影响海洋生态系统的全球变化的关键方面.
- 热带沿海物种,如脚 (Trochus pyramis),特别容易受到温度波动的影响.
- DTV和化学污染物,如 (PHE) 对海洋生物的综合影响尚未得到充分了解.
研究的目的:
- 为了研究4°C的DTV对珊瑚礁虫Trochus pyramis的PHE毒性的影响.
- 评估DTV在控制 (28°C) 和升温 (31°C) 条件下如何改变PHE毒性.
- 评估T. pyramis的生理反应,包括PHE生物积累,耐热性,抗氧化能力和能源预算.
主要方法:
- 在受控 (28°C) 和升高 (31°C) 的温度调节下,暴露Trochus pyramis在14天内4°C的日间温度变化下,暴露于 (1和10μg/L).
- 测量PHE在组织中的生物积累.
- 评估生理参数:耐热性,抗氧化酶活性 (例如,SOD,CAT) 和能量储备 (例如,糖原,脂质).
主要成果:
- 在28°C的DTV下,PHE对T. pyramis的不良影响很小,可能是由于增强的抗氧化防御和适应性能量分配.
- 在DTV的31°C时,PHE毒性显著加剧,特别是在10μg/L时,导致耐热性降低和抗氧化剂反应抑制.
- 高温与DTV相结合,在暴露于PHE的T. pyramis中扰乱了能量代谢,表明生理状态受损.
结论:
- 昼间的温度变化在调节氨酸对热带海洋类动物的毒性方面起着至关重要的作用.
- 高温和DTV的协同效应可以放大PHE的负面影响,威胁到珊瑚礁的草食种群.
- 在逐渐变暖的珊瑚礁环境中对的风险评估必须纳入日间温度变化的影响,以便准确的生态预测.
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