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蚂蟥又叫马鳖,是一类环节动物。它身体柔软,体表有许多环,体内有纵横交叉的发达肌肉,所以行动敏捷,身体形状也不十分固定。在我国水田中通常有两类吸血蚂蟥:从我国北部到长江流域一带是一种体长约3—6厘米的医蛭;从长江流域一直到广东、云南一带还有一类个体较大,长约7—12厘米的牛蛭。不论医蛭或牛蛭,只要水田或水塘中的水一有波动,它们马
Leech also known as soft-shelled turtle, is a link animals. It is soft body, there are many rings on the surface, the body has developed crosswise and longitudinal muscles, so agile, body shape is not very fixed. There are usually two types of blood-sucking leeches in paddy fields in our country: from the north of our country to the area of the Yangtze River basin, there is a kind of medical leeches about 3-6 centimeters in body length. From the Yangtze River valley to Guangdong and Yunnan, 7-12 cm cow leeches. Whether leeches or leeches, as long as the water in a paddy field or pond fluctuates, they are horses