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João Almeida¹, André R A Lima¹, Ana Margarida Faria²

¹MARE-Marine and Environmental Sciences Centre/ARNET-Aquatic Research Network, ISPA-Instituto Universitário, 1149 Lisbon, Portugal.

The Science of the total environment

|August 8, 2024

概括

阿特里娜长老的海洋幼虫能够在低氧中生存,但会降低新陈代谢. 低氧气可用性显著降低了它们的耐热性,影响了它们在不断变化的海洋条件下生存.

科学领域:

海洋生物学海洋生物学
生态生态学生态生态学
环境科学环境科学

背景情况:

海洋脱氧正在增加,威胁到海洋生态系统和物种生存.
海洋生物的早期生命阶段特别容易受到环境压力因素的影响,例如缺氧.
了解缺氧对生命早期影响对于预测人口和生态系统反应至关重要.

研究的目的:

为了评估低氧 (低氧) 对健身特征,新陈代谢和热耐受性的影响,在早期的Atherina牧师阶段.
为了确定Atherina长老幼虫能否应对氧气水平降低和相关的环境变化.
评估低氧和温度压力对幼鱼的综合影响.

主要方法:

实验设置使Atherina牧师幼虫暴露在两种氧气水平:正常氧 (6.5-7.2毫克L-1) 和低氧 (2-2.5毫克L-1).
两周的暴露期用于评估死亡率,生长,身体状况 (富尔顿K),常规代谢率 (RMR) 和临界热最大值 (CTmax).
在正常和缺氧条件之间对生理和健康相关特征的比较分析.

主要成果:

缺氧没有显著影响Atherina presbyter幼虫的死亡率,生长,体重或身体状况.
暴露于缺氧的幼虫表现出代谢抑郁,表明一种节能策略.
在低氧条件下,临界热最大值 (CTmax) 显著降低,从而降低了热耐受性.

结论:

阿特里娜长老的早期生命阶段可以通过代谢调整生存低氧条件.
减少氧气的可用性影响了Atherina presbyter幼虫的耐热性.
低氧和温度升高的综合压力因素对Atherina牧师群体构成重大威胁.

关键词:

阿特里娜·普雷斯比特的牧师气候变化气候变化气候变化鱼的幼虫鱼的幼虫鱼类生理学鱼类生理学有氧气的可用性.

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