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【环球网综合报道】据英国《每日邮报》8月22日报道,近日,科学家们在美国佛罗里达州一片海滩上的一个红海龟窝里,发现了一只罕见的双头小海龟。据估计,该小海龟外形之所以如此奇特,很有可能是由于基因突变所致。
据悉,每年都会有大量爬行动物迁徙至这片海滩上,因此,中佛罗里达大学的专家们一直都在密切关注着这片海滩。该海龟被发现时,正努力从窝里爬出,追赶其他刚孵化出来的小海龟。
该大学海龟研究小组的组长凯特·曼斯菲尔德博士(Dr. Kate Mansfield)在接受美国《国家地理》杂志采访时表示, 先天变异的海龟并不难找,难的是找到一只尚且存活的变异海龟。穷其职业生涯,她一共也只见过两只双头海龟。随后,她的团队将其放归大海。
红海龟受《美国濒危物种法》保护,而世界自然保护联盟更是将其列为濒危灭绝物种。美国海龟保护协会的数据显示,刚孵化的红海龟的存活率极低,在0.01%至0.1%之间。小海龟需要躲过渔网的威胁,承受气候变化带来的不良后果,还要克服海滩附近人类发展所带来的影响才能存活下来,实属不易。
据悉,曼斯菲尔德博士发现的这只畸形双头海龟并不是今年首例。今年四月,中国山西省在网上上传了一则视频,视频拍摄的便是一只有六条腿的双头小海龟,它的四只眼睛都能眨动,六条腿均能正常爬行。山西省的研究人员称,其外形怪异的原因也是由基因突变导致的。(实习编译:曹月 审稿:朱盈库)
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