世界最长寿的鱼竟逾500岁 从16世纪活到现在

世界最长寿的鱼竟逾500岁从16世纪活到现在（示意图／达志影像）

众所周知，乌龟是象征长寿的代表性动物，不过近年来却有专家学者发现，有远比乌龟还要长寿的鱼类，寿命甚至超过500岁，早在16世纪就已存活至今。

 

 

 

 

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The story behind the story... ???? This is the footage of a giant #Greenlandshark of 4.4 m that was caught and released with satellite tags in 2017. Back then, I shared a screen shot from the video which since has been widely shared, reposted and retweetet hundred of times. Often, when this picture has been shown, it is with a caption reading that this is a 400 yr or even 500 yr old Greenland shark. The shark was big yes, but we cant say anything that precise about its age. My guess is that this particular shark was older than 150 yr but it is obviously a guess. Besides, we have previously estimated the Greenland shark to have a lifespan of at least 272 yr, which was obtained from marine radiocarbon dating of the eye lens nucleus. That is an estimate and it needs verfication one day in the future using another independant method. Mean while, a new marine calibration curve (Marine20) was published last month and running that calibration might affect the current estimates. We will see ???? #greenlandsharkproject

Julius ????????????????（@juniel85）分享的貼文 於 PDT 2020 年 9月 月 11 日 上午 9:16 張貼

日本媒体《DIAMOND ONLINE》报导指出，人们普遍认为，寿命约为50至80岁的锦鲤相当长寿，但事实上，「格陵兰鲨」（Greenland shark）的寿命和其他鱼类不在同一个层次，动辄200岁以上的寿命，往往让人瞠目结舌。

尤其是丹麦学家2017年在北大西洋发现了其中一只格陵兰鲨的寿命竟然高达512岁，出生时甚至还是16世纪，是目前已知最长寿的有脊髓动物。

据悉，格陵兰鲨分布在格陵兰和冰岛一带，它的长寿秘诀来自于缓慢的生长和行动力，1年仅成长一厘米，要长到150多岁，才达到性成熟的阶段，平均寿命为272岁。

此外，它的游速相当缓慢，每3秒才能游1公尺，同时不需要太多食物，新陈代谢很低。即便如此，格陵兰鲨性格异常凶猛，过去曾被发现体内有着驯鹿、马及北极熊的尸骸。