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化地南极物种对海洋酸化和变暖的脂肪酸反应

Natalia Servetto¹, Marleen De Troch², Frédéric Gazeau³

¹Universidad Nacional de Córdoba, Facultad de Ciencias Exactas, Físicas y Naturales, Cátedra de Ecología Marina, Av. Vélez Sarsfield 299 (X5000JJC), Córdoba, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Diversidad y Ecología Animal (IDEA), Ecosistemas Marinos Polares, Av. Vélez Sarsfield 299 (X5000JJC), Córdoba, Argentina.

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概括

海洋酸化和海洋变暖并没有显著改变南极双鱼和珊瑚的脂肪酸概况. 这些海洋生物表现出强大的生化成分,尽管预测环境变化.

科学领域:

海洋生物学海洋生物学
海洋学海洋学海洋学
生物化学生物化学

背景情况:

海洋酸化 (OA) 和海洋变暖 (OW) 是影响海洋生态系统的重大环境变化.
脂肪酸 (FA) 对于海洋食物网中的能量转移至关重要.
化生物体可能表现出改变的生化成分,以应对不断变化的海洋条件.

研究的目的:

为了研究预测的海洋酸化和变暖对两种南极化物种的脂肪酸概况的影响.
为了评估Aequiyoldia eightsii (双) 和Malacobelemnon daytoni (珊瑚) 对模拟未来海洋条件的生理反应.

主要方法:

两个月的实验室研究.
暴露A. eightsii和M. daytoni在受控的OA和OW条件下.
脂肪酸组成的分析,重点关注与免疫功能,细胞膜流动性和炎症反应相关的比率.

主要成果:

在OA或OW下的任何物种中,没有观察到免疫功能或细胞膜流动性的FA比率的显著变化.
与炎症反应相关的FA组成在很大程度上没有受到影响.
在高温条件下,在A. eightsii中注意到对20:5n-3FA的负面影响.

结论:

而A. eightsii和M. daytoni的脂肪酸成分似乎能够抵御近期的海洋酸化和变暖.
虽然一些特定的FA在一种物种中受到影响,但整体的生化特征表明对预测的环境变化具有强度.

关键词:

班托斯 (英语:Benthos) 是一种植物.双类动物双类动物珊瑚珊瑚是一种珊瑚海洋压力因素海洋压力因素南大洋南大洋是南大洋.

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