龟类的三栖习性为水栖、半水栖和陆栖,怎样判断一种龟属于哪种习性,已成为养殖者困惑的问题。笔者认为,尽管龟有很多种类,但依据其习性仅分为水牺、半水栖和陆栖三种,通过对龟脚的指、趾间具全蹼、半蹼或无蹼的观察,就可大致判断其习性。结论是龟类的习性与特征有关。笔者研究发现,龟类的蹼与三栖习性的关系高度相关(表1、表2)。龟类的指、趾间具全蹼、半蹼还是无蹼这些形态特征,决定其 The habitat of turtles is aquatic, semi-aquatic and terrestrial habitat, how to determine a habitat which a turtle belongs to, has become a problem confused farmers. In my opinion, although there are many species of turtles, according to their habits, they are only divided into three categories: water sacrifice, semi-aquatic habitat and land-based habitat. By observing tortoise’s feet and toes with all-webbed, half-webbed or webbed-free observations, Judge its habits. The conclusion is that the habits and characteristics of turtles related. The author study found that the relationship between the turtle web and the habitat habitat highly correlated (Table 1, Table 2). Turtle finger, toe with all webbed, half-web or webless these morphological characteristics, determine its