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交生虫的多样性因宿主和环境而异,在不同热量的珊瑚礁中变化很大

Magena R Marzonie^1,2,3, Matthew R Nitschke^2,4, Line K Bay^2,3

¹College of Science and Engineering, James Cook University, Townsville, Queensland, Australia.

Molecular ecology

|April 8, 2024

概括

珊瑚共生群体因宿主遗传和环境而有所不同. 波西洛波拉共生体表现出更强大的宿主遗传影响,而阿克罗波拉共生体则更适应当地条件和热应激.

科学领域:

海洋生物学海洋生物学
生态生态学生态生态学
遗传学遗传学是一个

背景情况:

内交生态的藻类 (Symbiodiniaceae) 对珊瑚的热耐受性至关重要.
主体遗传学,环境和热干扰对共生动物群体的综合影响尚未完全理解.

研究的目的:

研究宿主遗传学和环境对大型地理区域内的Symbiodiniaceae社区的相互作用影响.
在三种珊瑚物种中确定物种级别的Symbiodiniaceae识别.
评估2020年漂白事件对共生动物社区的影响.

主要方法:

测序两种共生生物遗传标记 (ITS2和psbA) 和珊瑚宿主基因定型 (DArT-seq).
在澳大利亚的珊瑚海海洋公园 (Coral Sea Marine Park) 进行1300公里的采样.
多变量分析以评估共生动物社区结构的驱动因素.

主要成果:

Symbiodiniaceae 群体主要来自 Cladocopium 属.
阿克罗波拉共生体受到当地环境和热干扰的强烈影响.
波西洛波拉共生动物群体受到宿主遗传的影响比环境的影响多2.5倍.
环境和宿主遗传影响解释了P. meandrina共生体的变异率是P. verrucosa的四倍.
2020年的漂白事件对珊瑚物种产生了不同的影响.

结论:

对环境梯度的共生体社区结构反应是特定于物种的,并取决于宿主群体结构.
整合宿主,共生体和环境数据对于预测珊瑚的适应潜力至关重要.
了解这些相互作用对于在气候变化中保护珊瑚礁至关重要.

关键词:

克拉多科皮亚姆 (Cladocopium) 是一种有毒的药物.珊瑚海是珊瑚海的一部分.这就是ITS2的意义.生物地质学生物地质学珊瑚礁中的珊瑚礁这种共生是共生.

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