High -temperature hot mosquitoes this summer?Expert: 40 ° mosquito is reduced to people, drought is not conducive to its spawning reproduction

"Do you think there are fewer mosquitoes this year?" Recently, some netizens asked this question on social platforms.

The netizen said that in the past season, mosquito bite bags were bite, and they had been prepared for the "anti -mosquito package" early, and this year has not been used.

Source: Visual China

Why does the number of mosquitoes this summer decrease?

A researcher in the research direction is the Jiupi news that in the laboratory, the most suitable temperature for cultivating mosquitoes is about 28 degrees. Once it is overheated, when it reaches about 40 degrees, many mosquitoes will be "hot to death" Essence Due to the differences between mosquito seeds and individuals of each mosquito, only a few mosquitoes can survive at high temperatures.

This is consistent with the monitoring data of previous years. Taking 2020 as an example, the monitoring shows that August with the highest temperature in the year is the least mosquito month. In a paper entitled "Dynamic Monitoring of Mosquito and Virus in Wuhan in 2020", the project team captured samples of mosquitoes from April to October. Among them, in the capture of the main urban area of ​​Wuhan The number is the least, 31; the number of mosquitoes captured in May is 600, which is nearly 20 times the difference between two months.

In an interview with Anhui Satellite TV, Dr. Jin Binbin, a Dr. Jin Binbin Center in Hangzhou, Zhejiang Province, introduced that the density of mosquitoes on Hangzhou as a whole this year has dropped by about 30%, which is mainly related to the hot climate.

Kim Binbin said that the most suitable temperature for mosquito activities is 25 ° C-30 ° C. The high temperature environment will reduce its activity. It is difficult to survive by mosquitoes exceeding 40 ° C. At this time, mosquitoes are low.

By September and October, the temperature dropped, would mosquito "make a comeback"?

The above -mentioned insectic virus researcher said whether it would be "anti -fluttering", but also depends on the overall climate environment in the future. Mosquito eggs are produced in water, and it takes about two weeks to incubate. The incubation conditions require a suitable temperature and humidity environment. If the weather that continues to be drought and rain in October, the mosquito eggs cannot hatch, and there will be no problems with a large number of reproduction.

In addition, the extensive elimination of public places under the epidemic also affects the living environment of mosquitoes. The researcher said that mosquitoes do not like the smell of 84 disinfection, and the use of its disinfection may produce mosquitoes. Studies have shown that the frequent environmental cleaning and disinfection may lead to a decrease in the number of mosquitoes observed.

But the overall number of mosquitoes is not common nationwide.

According to the Chaozhou Centers for Disease Control and Prevention of Guangdong Province, in June this year, the surveillance monitoring of the density of Iraqi mosquitoes in the city's 189 media in the city showed that the density of the mosquito larvae, that is, the Bretu index increased significantly compared with May this year. The results of the self -inspection monitoring of the 50 monitoring points of the city of Chaozhou City showed that the density of the mosquito mosquitoes was higher than the same period between 2020 and 2021, exceeding the control requirements.

Jiupai journalist Wang Yiran

[Breaking news] Please contact reporter WeChat: linghaojizhe

【Source: Nine Pai News】

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