Stuck in a rut： Potential costs of sand roads to gopher tortoises Gopherus polyphemus  

一成不变：沙公路地鼠陆龟Gopherus波吕斐摩斯潜在成本

作　　者：Lauren N. GILSON 

机构地区：[1]Archbold Biological Station, Lake Placid, 123 Main Drive. Lake Placid. FL 33960. USA [2]Department of Environment and Agriculture, Curtin University, Bentley WA 6845, Australia

出　　处：《Current Zoology》2015年第4期578-585,共8页动物学报（英文版）

摘　　要：Roads affect wildlife significantly through direct mortality but also through behavioral change. We explored the ef- fects of unsurfaced sand roads with a low traffic volume on the travelling behavior of gopher tortoises Gopherus polyphemus in scrub habitat in central Florida, as evidenced by the tracks left by tortoises on sand roads. Tortoises （and most other taxa leaving tracks on the roads） did not appear to make use of roads for travel but attempted to cross them, the success of which was influ- enced by the size of the individual. Smaller animals （presumably younger tortoises） were more challenged than larger animals by both sand road widths and depths of vehicle ruts in sand roads. Sand roads may present both physical and physiological challenges to gopher tortoises, particularly to small ones. This research provides further evidence that the negative influence of roads in fragmenting the environment is not limited to vehicle mortality [Current Zoology 61 （4）： 578-585, 2015].

关 键 词：Travel Non-lethal effects of roads Testudine REPTILE SIZE-DEPENDENT 

分 类 号：S966.5[农业科学—水产养殖] S865.1[农业科学—水产科学]