Girguis Peter R, Lee Raymond W
Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138, USA.
Science. 2006 Apr 14;312(5771):231. doi: 10.1126/science.1125286.
The highest oceanic temperatures are found at hydrothermal vents, where the polychaete Paralvinella sulfincola lives on vent sulfides within steep and dynamic thermal gradients. To determine P. sulfincola thermotolerance and preference, we developed a high-pressure aquarium that mimics in situ thermal gradients and permits P. sulfincola to move within the gradient. These polychaetes were thermotaxic, preferring temperatures of 40 degrees to 50 degrees C. Some individuals remained at 50 degrees C for 7 hours (the duration of the experiment), whereas others endured exposure to 55 degrees C for over 15 minutes, demonstrating that alvinellids prefer high temperatures and are among the most thermotolerant of marine organisms.
海洋温度最高的区域位于热液喷口，多毛纲动物硫化叶蜗生活在那里陡峭且动态变化的热梯度中的喷口硫化物上。为了确定硫化叶蜗的耐热性和偏好，我们开发了一种高压水族箱，它能模拟原位热梯度，并允许硫化叶蜗在梯度内移动。这些多毛纲动物具有趋温性，更喜欢40摄氏度至50摄氏度的温度。一些个体在50摄氏度下停留了7小时（实验持续时间），而另一些个体则在55摄氏度下耐受了超过15分钟，这表明阿尔文虫类更喜欢高温，并且是海洋生物中耐热性最强的之一。
