外来物种蛇鳄龟在甘肃省庆阳市的发现与鉴别

蛇鳄龟原分布于美洲,1997年引入中国大陆人工养殖,目前在中国野生环境有扩大蔓延态势。蛇鳄龟体形较大、生态适应性幅度较广、抗耐性大、可在多种生态系统生存,有较大的入侵潜力,可能破坏区域生态平衡,威胁国家生态经济安全。对甘肃省庆阳市野外环境发现的蛇鳄龟进行特征鉴别,描述其形态与生活习性,并对其入侵潜力、潜在危害和预防措施进行了阐述。

Finding and Identificat ion of Chelydra serpentina in Qingyang City of Gansu Province

Chelydra serpentina, originally distributed in America Continent , was brought into China in 1997 and has been taken into artificial breeding ever since.At present, it tends to spread and multiply in a large scale in wild environment .Chelydra serpentina is often large in size and can adapt to various existing circumstances.Therefore,it has great potential in invading China ’ s wild environment and may destroy ecological balance, which in turn, will threaten ecological and economic security in China .The features,morphology and life habit of Chelydra serpentina found in wild environment of Qingyang City in Gansu Province were described , the invasion potential, potential hazard and preventive measured were elaborated.