稚鳖腹面颜色的差异与鳖种鉴别关系探讨

通过对我国现有不同鳖种的稚鳖的研究发现：不同种的稚鳖腹部表皮颜色（色斑）均有明显差异，同种稚鳖的颜色基本一致，并在一定时期内不因环境变化而改变颜色，同时发现人工养殖中华鳖种源混杂而导致人工繁殖的稚鳖腹面颜色（色斑）分化，对称状黑斑出现的比例与混杂程度有关。腹面有无对称状黑色斑点的两种类型稚鳖经生化测定和对比养殖均存在差异。说明稚鳖腹面颜色特征可作鳖种鉴别的外观依据，还可作为鳖种资源提纯复壮的指标。

The Studies on the Relationship Between Young Soft-Shelled Turtlles'' Ventical Colour and Their Rase Identification

Studies on the young softed shelled turtles show that there are obvious differences in the ventical color (mottling) of different races, however, young individuals of the same race have the same ventical color which does not change with the changing of living environment during a certain time. At the same time, it is discovered that young softed shelled turtles obtained by artificial propagation show differentiation of ventical color because of mixed germ line. young softed shelled turtles hatched from the eggs collected from the wild have black dots and no dots. They are obvious differences by biochemical test and contrast feeding. All our studies demonstrate that: we can classify the softed shelled turtles by the ventical color of young individuals and get the pure line through this way during artificial culture.