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汕头达濠惊现大水怪 原为保护动物棱皮龟

来源:潮人在线 时间:2012/2/16 13:36:07 字体:[ / ] 阅读:514241

刚出生不久棱皮龟

成年状棱皮龟体型庞大

图为:达濠渔民放生棱皮龟

昨日,汕头市达濠区渔政局从渔民获悉一条震惊达濠的消息,一只体型庞大,性情极其凶猛的大水怪出现在人们眼前,这只大水怪需要十位壮汉才能挪动它。一时之间引起群众围观,部分渔民议论从未见此类海洋生物。后经验证,该生物原为国家二级保护动物,棱皮龟。

棱皮龟,又称革龟,是龟鳖目中体型最大者,最大体长可达3米,龟壳长2米余;体重可述800-900公斤。棱皮龟主要分布在热带太平洋、大西洋和印度洋,偶尔也见于温带海洋,分布于热带至温带海域、北至西伯利亚海岸以及南中国海、东海、黄海沿海、海南沿岸、台湾沿岸等海域,多栖息于热带海域的中、上层,有时可进入近海和港湾中。据美国杜克大学研究小组发表的海龟调查报告表明,有可能在今后10-20年内灭绝。

人为环境因素导致棱皮龟数量锐减

棱皮龟数量锐减的一个重要原因是,由于人们在海洋中丢弃废塑料袋使棱皮龟误认为是水母而误食,造成肠道阻塞而死亡;加上过度捕捉和溺毙,所以数量日益减少。

过去20年里,由于厄尔尼诺现象造成海洋水温变化、渔民非法捕捞、海洋污染及当地旅游开发,棱皮龟数量锐减约95%。照此发展,棱皮龟很有可能在10年内灭绝。据估算,全世界雌性棱皮龟数量从1980年约11.5万只降至现在不到4.3万只。在哥斯达黎加的普拉亚格兰德海滩是棱皮龟在东太平洋第一大、世界第四大产卵地。上世纪90年代前,每个产卵季节(每年10月至次年3月)都有250只至1000只棱皮龟上岸筑窝产卵,但在2006年-2007年产卵季,只有58只棱皮龟这里产卵。

棱皮龟另一个锐减原因是作为医药成分被捕猎,中医传统理论认为棱皮龟龟板、掌、胶:有滋阴潜阳、柔肝补肾、清火明目的功效;肉、血、胆:治气管炎、哮喘,因此被利用。

太平洋棱皮龟濒临灭绝 美国拟开辟专属栖息地

2010年1月8日,美国动物保护者发起拯救太平洋棱皮龟的运动,美政府准备在美国西海岸设立七万平方英里海域作为此类大海龟的栖息地。

这是首次由美国国家海洋和大气管理局(the National Oceanographic and Atmospheric Administration)为濒临灭绝的棱皮龟开辟重要栖息地。如果获得批准,政府将会限制危害海龟或其食物的项目,比如调整加利福尼亚海岸的农业废料处理、石油泄漏净化、电厂排放物、石油钻探、雨水径流、水产养殖、潮汐能利用、波浪能发电和海水淡化等项目。

这项建议将通过一年的审查后才能最终获得批准,现在正举行为期60天的公众评议,政府届时将针对拟议的规例作出最后决定,根据国家海洋和大气管理局渔业服务部公布的文件。

海龟保护区,也就是觅食区和迁徙路线,包括加州门多西诺县和洛杉矶县的中心海岸,整个华盛顿海岸和俄勒冈州北部哥伦比亚和安夸河之间三分之二的海域也将包括在内,总之,70600平方英里的海洋将被划为海龟的栖息地。目前唯一的保护区是美属维尔京群岛和附近海域。

作者: 责任编辑:zhangwenxian 分享:收蒧 | 复制网址
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