Why do tens of thousands of frogs get together to mate and lay eggs?

June 5438 +2008 10, a strange thing happened in tuanjie village, Heshan Town, Pujiang County, Sichuan Province: in three days, tens of thousands of frogs gathered by the river near the village to have blind date mating, and laid eggs and gave birth on the spot. Such a large-scale frog blind date has aroused people's panic and anxiety. Where do many frogs come from? Why should they breed in spring but choose to breed in late autumn? Does this abnormal behavior of frogs indicate the coming of natural disasters such as major earthquakes?

It turns out that after autumn, the temperature in Sichuan Basin is abnormally high. In September, the temperature in Pujiang County reached 265,438 0.9℃, 0.7℃ higher than normal. 10, the temperature in Pujiang still drops slowly, and the average temperature reaches 18.0℃, which is 0.9℃ higher than normal. 18.0℃ is the best temperature for frog breeding and mating.

In addition to the high temperature, excessive precipitation also contributed to the frog's "blind date" party. In September, the precipitation in Pujiang County was 2100.3mm, 25% more than normal, and in June, the precipitation was102.4mm, 50% more than normal.

This abundant and suitable precipitation is similar to the time when frogs breed in large numbers at the turn of spring and summer. It is the continuous precipitation that makes the canals in Heshan Town of Pujiang County overflow, providing an excellent place for frog breeding.

In addition, from September 22 to 26, the persistent regional rainstorm weather in the western Sichuan Basin also played a certain role in the gathering of ten thousand frogs. Especially on the evening of 23rd and 25th, two regional rainstorms occurred in the western part of the basin, including Pujiang County, with an interval of only one day, which is rare in history. In addition, with the heavy precipitation, the strongest thunderstorm occurred in the western part of the basin since the meteorological record.

With the improvement of the ecological environment, the number of frogs has doubled, and the abnormal climate such as high temperature, excessive precipitation and severe thunderstorms has led to the wrong season breeding of frogs, which is the real reason for the "blind date" of ten thousand frogs.