介绍水蛭的冬眠特性与变温特性:

　　Hibernate features and variable temperature characteristics of leech:

　　Leech hibernate features: in natural conditions, leech with hibernate, hibernation is not a cold-blooded animal physiological phenomenon, low temperature in winter leeches, would reduce the physiological activity, therefore this time leech feeding activity.

　　Below a certain temperature is will stop eating in a dormant state. General in the northern region of hibernation for eight months or so, in the south for about 3 to 7 months, therefore in the leech farming should pay attention to the hibernation of leech.

　　Variable temperature characteristics: leeches not like pigs, cattle, poultry and other animals, make its temperature is stable within a certain range, but along with the change of ambient temperature changes, so the animals become variable temperature or cold-blooded.

　　That is to say, leech is belong to the lower animals, no self-improvement thermoregulatory function, the temperature is changed according to the different environment temperature, the higher the temperature is high, the outside temperature lower their body temperature is low, the animal's ability to adapt to the environment temperature change is bad, only in the appropriate temperature range to grow, to normal activity.