is a state at which it enters the shell that allows it to survive in situations that are not conducive , which is decreased of its vital functions. To enter this state the snail sends a series of signals to your body from the nervous system.
These signals are sent to the environment especially when environmental conditions are not the best for him (when the temperature drops too low or if the moisture is not adequate) or when food is absent. In addition to these reasons, it was found that snails reared in natural environments tend to hibernate always in the same time, sometimes regardless of the conditions above.
With this we deduce that there are other factors that encourage the snail to enter this state. The way in which the snail sees that it is now when entering a hibernation process is determined sometimes by what is known as photoperiod (number of hours of light in one day.)
This is what he perceives the snail. Noting that the daylight hours have decreased (this occurs during the winter), the snail appears that now is the right time to hibernate.
Hibernation is a physical state whereby the snail needs to go. If for any reason coincidentally for overwintering conditions did not exist earlier or later end up on snail automatically entered in a state of hibernation.
The snail from a young age has the ability to hibernate if the time you can stay hibernated is low and the probability of death in this state is greater at younger ages. Snails with a diameter less than 13 mm are unable to survive a natural process of hibernation.
During hibernation feeding the snail survives at the expense of glycogen you have stored in your body, especially in an organ called the hepatopancreas.
snails hibernate Before looking for a quiet, safe and protected from the weather, and adheres strongly to soil or other surfaces, or dig a hole in the ground on which later gets. To hibernate creates your foot secretes mucus that hardens on contact with air.
This mucus
environmental isolates him and keeps him locked in the shell (this is called closure cap or epigram). Before joining the snail operculum AutoPurge fast, removing the excrement and all the food material containing the intestines.
During this period the animal reduces your heart rate going from 30 beats per minute in a normal state usually has to make only 1 beat per minute. The hibernation period is variable depending on climatic conditions of each area.
approximate temperature at which the snail goes into a hibernation state is 6 ° C if the humidity is high. If the moisture content is below 60% the snail could enter this process at temperatures even higher. It should be noted further that if the temperature drops below 0 º snails may die due to a freezing process.
During the period of hibernation the shell undergoes a considerable weight loss, around 20 to 30%, so when they perceive that the conditions and you are right (when the temperature rises to 10 º C), leaves little little this state and is dedicated to all you can eat, trying to regain the strength to prepare for playback.
has been shown that hibernation helps better reproduction, considering that 3 months is the optimal time that should pass the snail in this state.
There have been numerous studies on snail mortality during hibernation. In all it was found that the longer the duration of the hibernation period increases the rate of deaths during the process, in some experiments it was observed that process of hibernation at a temperature of 6 º C for one month bring only a percentage of mortality 3% while three month hibernation carry 11% of deaths.
Source: Basin Rural
http://www.cuencarural.com/granja/helicultura/43684-la-hibernacion/ Chilean-Bitacoras
UDLA Chile
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