摘要
海南岛是我国淡水龟类分布较为集中、物种丰富度高、动物区系独特的地区 ,已知的淡水龟有 2科 8属 1 1种 ,占全国淡水龟种数 (2 4种 )的 46%。海南岛淡水龟物种密度为 3 2种 1 0 4km2 ,均为东洋界成分 ,其中华南区种 4种 ,占 3 6 4% ;华中 华南区共有的种 7种 ,占 63 6% ;海南特有种 2种 ,占岛内淡水龟种数的 1 8 2 %。海南岛淡水龟占华南地区淡水龟种数 (1 9种 )的 5 7 9%。海南与广东、广西和香港的淡水龟类区系关系也十分密切 ,与它们的生物相似值分别为 0 76、0 64和 0 47。目前 ,中国 75 %的淡水龟类濒危 ,海南岛 81 8%的淡水龟类濒危。分析表明 ,海南岛应是我国淡水龟类资源优先保育的地区。
Hard-shelled freshwater turtles on Hainan Island are very rich and the fauna is also very distinctive. A total of 11 species were found on Hainan Island, accounting for 46% of total species in China. These species belong to 2 families and 8 genera. All these species belong to the Oriental Realm, of which 4 species belong to the South China Region accounting for 36.4%, 7 species belong to the Central-South Region accounting for 63.6%, 2 species areendemic to Hainan Island accounting for 18.2%.Species density reaches 3.2/10 4?km 2. A total of 19 species of hard-shelled freshwater turtles are recorded in South China accounting for 79.2% of China. The species of Hainan Island account for 57.9% of South China, while the fauna of Hainan Island is closely related to these of Guangdong, Guangxi and Hong Kong. The biotic resemblance value between Hainan Island and Guangdong is 0.76,0.64 between Hainan Island and Guangxi and 0.47 between Hainan Island and Hong Kong. Seventy-five percent of freshwater turtles of China are endangered, while 81.8% are endangered on Hainan Island. The Analysis indicates that hard-shelled freshwater turtles on Hainan Island have high conservation priority.
出处
《动物学杂志》
CAS
CSCD
北大核心
2003年第6期68-71,共4页
Chinese Journal of Zoology
基金
国家自然科学基金资助项目 (No .30 2 6 0 0 19
3989336 0 2 )
关键词
淡水龟
区系
保护优先性
海南岛
Hard-shelled freshwater turtle
Fauna
Conservation priority
Hainan Island
