The chirping of frogs in hot and rainy days also has bioinformatics significance. It indicates the change of the weather.
Frog hermaphroditism, in vitro fertilization, sperm and egg fertilization in water, male and female frogs embrace each other, which is beneficial for female and male frogs to ovulate at the same time, improving the chance of sperm and egg combination and improving the fertilization rate.
Both the female frog and the male frog can bark, but the male frog has a pair of external sound sacs on both sides of his throat. When singing, they protrude outward to form two large air sacs, which make the sound louder, so it is louder than the female frog.
There is a bulging thing on the frog's mouth that can make a sound. It likes to sing loudly on rainy days in summer. In hot summer, frogs usually hide in the grass and occasionally make short calls.
If there is a cry, the people next to them will scream a few times, as if singing to each other. Frogs are happiest after the heavy rain. At this time, there will be dozens or even hundreds of frogs croaking endlessly, and the sound can be heard for miles away.
Vocal cords are the vocal organs of frogs. Located above hilar cartilage. On both sides of some male frogs' squabbles, there are external sound sacs that can expand and vibrate, and the sound sacs produce * * * sounds, which make the frogs' songs magnificent and loud. After the rain, when you stroll to the pond, you will hear the cries of male frogs echoing each other, one after another, gathering into a chorus.
Scientists point out that frog chorus is a veritable chorus, which has certain rules, including lead singer, chorus, chorus and accompaniment, and is closely coordinated with each other. It is speculated that chorus is much better than solo because it contains more information. Chorus is loud and far away, which can attract more female frogs, so frogs often use chorus.
Extended data:
Reproductive habits of frogs:
The reproductive characteristics of frogs are hermaphroditism, fertilization in water and oviposition. The breeding time is about the middle and late April of each year. In the process of breeding, frogs have a very special phenomenon-hugging each other. It should be noted that the frog hug is not mating, but a link in the breeding process. Studies have shown that if the male and female frogmen are separated (that is, there is no hug process).
Then even in the breeding period of frogs, female frogs can't excrete eggs. It can be seen that the biological significance of cuddling is that it can promote female frog ovulation. Generally, frogs lay eggs and fertilize in water. After hatching, the egg becomes a tadpole, lives in the water, and then becomes a young frog ashore.
However, tree frogs lay eggs in different ways. The eggs laid by tree frogs with spotted legs are like a mass of white soap bubbles and a mass of cream, which are attached to aquatic plants. The most interesting thing is the Emei tree frog, which lays its eggs on leaves near the water. The egg develops in the egg and then falls into the lake to continue its development.
Another example is the piano frog, which sings very sweetly. Before laying eggs, it will build a mud nest and then lay eggs in it. Some frogs belonging to tree frogs don't climb trees, but live in water.
Current situation of frog population:
Frogs are distributed all over the world except the Caribbean islands and the Pacific islands, and are rapidly decreasing worldwide. The main reasons are environmental pollution, climate change, invasion of alien species and habitat shrinkage caused by human expansion. The expansion of human life has reduced the number of frogs, and frogs are rarely seen in forests and swamps.
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