What are the reasons why animals hibernate?

Hibernation is an essential survival skill for many animals, and it is able to make changes to the environment.

There is very little food in winter, such as insects and other food that frogs need, almost invisible in winter, the lack of food makes them have to find a way to maintain life, these animals generally begin to store a large amount of subcutaneous fat in late summer and early autumn by eating a lot of food, etc., and when the temperature drops, they will gradually enter a state of hibernation, and they can reduce their consumption when they enter hibernation to stop nausea.

Another reason should be that the temperature of the environment is greatly reduced in winter, some of them, such as frogs and earthworms, do not have fur as a condition to protect themselves from the cold, and there is no way to resist the severe cold, so they can only hibernate through hibernation in the relatively low temperature underground, and there is no way to hibernate at high temperatures.

During hibernation, the animal's body temperature will be lower than normal, and hypothermia and sleep state contribute to less energy expenditure, helping them to survive the winter when the food environment is harsh.

However, some hibernating animals will wake up in the process, such as some squirrels, etc., will wake up briefly, replenish some previously prepared food and continue hibernation.

Hibernating animals are, hedgehogs, bats, fish, snails, snails choose a safer place to avoid the cold, in addition to burrowing into a deep hole, he also seals his shell mouth, there is a small hole, used to breathe, hide in the shell and sleep for the winter. Fish, fish, some fish also hibernate carp, often spend the winter at the bottom of the river, dozens to hundreds, clustered in the depression in the water, head and head.

Secrets close together, breathless, knowing that spring is only reviving and scattering. Hedgehogs and hedgehogs can hibernate for 236 days without eating. Bats, bats hide in caves and tree hollows to sleep in winter.

Hook the main object with a claw, and the flying membrane sac can hold the body, hanging upside down, and the head is motionless. That hanging head does not understand that the heart beats more than 40 times per minute is reduced to 5 or 6 beats.

Hibernation is a kind of adaptation of some animals to the external environment during the winter, so that their life activities are in a state of extreme reduction. So that's why animals hibernate.

Mainly because in winter the weather is cooler and there is very little food, so animals will save calorie consumption in this way.

This is because they can't adapt to the cold weather, and they can't survive in particularly cold weather, so they have to hibernate to get themselves through the cold winter.

It is because after a year of hard work, animals need to have a period of rest, and during this time, they need to store some food and conserve their physical strength, so they will hibernate.

1. Animals hibernate because they need to save food and maintain body temperature.

2. Animals cannot maintain the constant body temperature required for normal activities when the cold weather comes, so they have to find a place to hide and hibernate to survive the cold winter.

3. In the living area, there is no enough food needed to survive in winter, so the only way to slow down metabolism and reduce energy consumption is to use hibernation to survive the winter of food shortage.

Hibernation is also called "winter 80". Some animals in winter have hibernation habits. The significant reduction in the activity of animals during the winter months is caused by the adaptation of these animals to the extreme conditions of the unfavorable external environmental conditions in winter.

Bears, bats, moths, polar squirrels, frogs, snakes, etc., all have hibernation habits. Reasons why hibernating animals need to hibernate. Every year after the frost falls, as the temperature drops, sound rats, cave rabbits, and stinging snakes all hide in their burrows, indulging in caves without eating or sleeping.

At this time, the animal's body temperature drops to as low as the temperature, breathing and heart rhythm slow down, and metabolism drops to its lowest point. But hot-blooded animals are not the same as cold-blooded animals. The rise and fall of body temperature in cold-blooded animals is determined by the external environment, while hot-blooded animals currently control their body temperature purposefully, and they will gradually lower their body temperature until they enter a state of hibernation.

When they want to come out of hibernation, the heat-producing organs are fully mobilized to return their body temperature to their original levels within a few hours. The highly complex physiological phenomenon of hibernation in hot-blooded animals has attracted the attention of scientists, who have invested a lot of research but have not yet made a consistent judgment on the mechanism of this phenomenon. The second reason is undernourishment.

Mammals get their calories mainly from food. Lack of food makes it difficult to maintain high and constant temperatures. Therefore, animal hibernation is a physiological adaptation to survive the season of food shortages.

Through experiments, it can be proved that the caged small sound rats are well fed and will not enter hibernation even if they reach hibernation low temperatures. But this view was immediately opposed by some. The rationale is that artificial cooling does not guarantee that all hibernating animals will fall asleep.

During hibernation season, many hibernating animals automatically stop or refuse to fall asleep, rather than a shortage of food. Scientists experimented with yellow rats, drawing blood from hibernating rats and injecting them into summer active rats under artificial conditions, and then entering a state of hibernation. This suggests that hibernating writants may have a hibernation-inducing substance in their blood.

Whenever the climate gradually gets cold and food is scarce, many animals go into hibernation, fasting and adjusting the body, reducing the body's metabolism, and maintaining it at a relatively low basal metabolic consumption, in order to obtain a larger living space, so as to adapt to the changing internal and external environment. Therefore, the phenomenon of hibernation is a way for animals to adapt to the undesirable environment in the struggle for survival. When animals hibernate, they don't starve to death if they don't eat for the winter.

Because before hibernation, they have already begun to prepare for hibernation to survive this difficult period. The preparation before hibernation of these animals is very special, that is, from the beginning of the summer season, they gradually accumulate nutrients in their own bodies, which are enough to meet the basal metabolic consumption required by the body throughout the hibernation process. Despite the accumulation of a large amount of nutrients in the body, how can the hibernation period last for several months?

It turns out that during the hibernation period, the animal lies in the nest and does not eat or move, or rarely moves, the number of breaths decreases, the body temperature also drops, the blood circulation slows down, the metabolism is very weak, and the nutrients consumed are relatively reduced, so the nutrients stored in the body are enough. When the body's stored nutrients are almost depleted, the hibernation period will be over. In July 1946, a petroleum geologist unearthed a hibernating frog in an oil deposit in Mexico.

The frog was buried in a 2-meter-deep layer of mine, and when it was excavated, it was still soft and shiny, and it took two days before it died. Geologists have scientifically determined the deposit and confirmed that the deposit was formed more than 2 million years ago. And this frog can only be buried in the ore layer when the deposit is formed, and it is absolutely impossible to enter the ore layer after the deposit is formed.

It can be seen that the frog has survived in the mine for more than 2 million years. In April 1782, a stoneworker in the suburbs of Paris, France, mined a huge stone from a limestone layer at a depth of 4 to 5 meters. Splitting the stone open, it was unexpectedly discovered that there were 4 live toads hidden inside.

Scientists have scientifically determined this limestone layer and confirmed that it was formed more than 1 million years ago. It can be seen that these four toads have survived inside the rock for more than 1 million years. Why do toads and frogs hibernate in rocks and mines for more than 1 million or even 2 million years without dying?

Scientists in many countries have been studying this for a long time, but they have not yet achieved satisfactory results. Weak, after waking up, you have to swallow a lot of food to replenish nutrients, and it is volatile to return to normal as soon as possible.