The University of Sydney, School of Life and Environmental Sciences, Camperdown, New South Wales 2006, Australia.
The University of New South Wales, School of Biological, Earth and Environmental Sciences, Kensington, New South Wales 2052, Australia.
Mar Pollut Bull. 2021 Mar;164:111991. doi: 10.1016/j.marpolbul.2021.111991. Epub 2021 Jan 20.
The wellbeing of marine organisms is connected to their microbiome. Oysters are a vital food source and provide ecological services, yet little is known about how climate change such as ocean acidification and warming will affect their microbiome. We exposed the Sydney rock oyster, Saccostrea glomerata, to orthogonal combinations of temperature (24, 28 °C) and pCO (400 and 1000 μatm) for eight weeks and used amplicon sequencing of the 16S rRNA (V3-V4) gene to characterise the bacterial community in haemolymph. Overall, elevated pCO and temperature interacted to alter the microbiome of oysters, with a clear partitioning of treatments in CAP ordinations. Elevated pCO was the strongest driver of species diversity and richness and elevated temperature also increased species richness. Climate change, both ocean acidification and warming, will alter the microbiome of S. glomerata which may increase the susceptibility of oysters to disease.
海洋生物的健康与其微生物组有关。牡蛎是一种重要的食物来源，并提供生态服务，但人们对气候变化（如海洋酸化和变暖）将如何影响其微生物组知之甚少。我们将悉尼岩牡蛎（Saccostrea glomerata）暴露于温度（24、28°C）和 pCO（400 和 1000 μatm）的正交组合中 8 周，并使用 16S rRNA（V3-V4）基因的扩增子测序来描述血淋巴中的细菌群落。总的来说，升高的 pCO 和温度相互作用改变了牡蛎的微生物组，在 CAP 排序中清楚地划分了处理。升高的 pCO 是物种多样性和丰富度的最强驱动因素，而升高的温度也增加了物种丰富度。海洋酸化和变暖的气候变化将改变 S. glomerata 的微生物组，这可能会增加牡蛎对疾病的易感性。
