海南万泉河琼海段外来物种红耳龟与本地种中华条颈龟家域的比较研究  

Home Range Comparison of Exotic Species Trachemys scripta elegans and Native Species Mauremys sinensis in the Qionghai Section of Wanquan River,Hainan Island,China

作　　者：马凯[1] 李闯[1] 史海涛[1,2] 王剑[2,3] 刘丹[1] 汪继超[1] 

机构地区：[1]海南师范大学生命科学学院,海口571158 [2]中国科学院成都生物研究所,成都610041 [3]中国科学院大学,北京100049

出　　处：《动物学杂志》2013年第3期331-337,共7页Chinese Journal of Zoology

基　　金：国家自然科学基金重大国际合作项目(No.30910103916);教育部科学技术重点项目(No.211145)

摘　　要：2010年7月至2011年4月、2011年8月至2012年8月,在海南万泉河琼海段,应用无线电遥测技术研究了外来物种红耳龟(Trachemys scripta elegans)和本地种中华条颈龟(Mauremys sinensis)的家域。采用最小凸多边形法和线家域法计算了所有个体的家域大小和不同个体间家域的重叠状况。结果表明:(1)红耳龟和中华条颈龟的家域面积分别为(8.15±2.83)hm2、(5.82±3.95)hm2,线家域分别为(534.07±74.98)m、(504.00±222.96)m;(2)两种龟的家域面积和长度均无种间差异;(3)成年雌性红耳龟的家域面积和长度显著大于雄性;(4)红耳龟和中华条颈龟家域的种内重叠度分别为0.27±0.02、0.08±0.06,并且红耳龟家域的种内重叠度显著大于中华条颈龟;(5)红耳龟与中华条颈龟家域的种间重叠度为0.20±0.02。本文研究结果提示,红耳龟在野外对本地种中华条颈龟具有潜在的竞争威胁。The home range of the invasive Red-eared Slider （Trachernys scripta elegans） and the native Chinese Strip-necked Turtle （Mauremys sinensis） was tracked by radio telemetry in the periods of July 2010 to April 2011 and August 2011 to August 2012 in the Qionghai Section of Wanquan River, Hainan Island, China. The home range and home range length of each individual was calculated by minimum convex polygon based on 2 043 locations from 32 individuals tracked. The home range area of T. s. elegans and M. sinensis is, respectively, 8.15 ±2.83 hm2, 5.82 ±3.95 hm2, and the line home range is 534. 07 ± 74.98 m, 504. 00 ± 222.96 m. No any difference was detected between the two species in home range area and line home range.The home range and home range length of females were significantly larger than those of male in adult T. s. elegans. The home range overlap degree between individuals of T, s. elegans and M. sinensis is, 0.27 ± 0. 02 and 0.08 ± 0. 06, respectively; and the intraspecific home range overlap degree of T. s. elegans was significantly larger than that of M. sinensis. The home range overlap degree of T. s. elegans and M. sinensis is 0.20 ± 0. 02. The results of this study suggest that T. s. elegans may have a potential competitive threat to M. sinensis in the wild.

关 键 词：外来物种 红耳龟 家域 重叠度指数 

分 类 号：Q958[生物学—动物学]