Department for the Study of Territory and its Resources, University of Genoa, Genoa, Italy.
ISME J. 2012 Jan;6(1):21-30. doi: 10.1038/ismej.2011.89. Epub 2011 Jul 14.
The long-term effects of ocean warming on prokaryotic communities are unknown because of lack of historical data. We overcame this gap by applying a retrospective molecular analysis to the bacterial community on formalin-fixed samples from the historical Continuous Plankton Recorder archive, which is one of the longest and most geographically extensive collections of marine biological samples in the world. We showed that during the last half century, ubiquitous marine bacteria of the Vibrio genus, including Vibrio cholerae, increased in dominance within the plankton-associated bacterial community of the North Sea, where an unprecedented increase in bathing infections related to these bacteria was recently reported. Among environmental variables, increased sea surface temperature explained 45% of the variance in Vibrio data, supporting the view that ocean warming is favouring the spread of vibrios and may be the cause of the globally increasing trend in their associated diseases.
由于缺乏历史数据，海洋变暖对原核生物群落的长期影响尚不清楚。我们通过对历史连续浮游生物记录器档案中的福尔马林固定样本的细菌群落进行回溯分子分析，克服了这一空白，该档案是世界上历史最悠久、地域最广泛的海洋生物样本收藏之一。我们表明，在过去的半个世纪中，包括霍乱弧菌在内的普遍存在于海洋中的弧菌属细菌在北海浮游生物相关细菌群落中的优势地位增加了，最近有报道称，与这些细菌有关的沐浴感染病例空前增加。在环境变量中，海面温度升高解释了弧菌数据方差的 45%，这支持了海洋变暖有利于弧菌传播的观点，并且可能是其相关疾病在全球范围内呈上升趋势的原因。
