Scientist studies confirm that the moths originated in south america
On 8 may, this newspaper, the journalist wen chou, published an online collaboration of foreign and middle scholars, which identified moths as having their origin in south america. The study was hosted by yu min-sheng, director of the national priority laboratory for the ecological control of harmful crops at fujian agroforestry university, and was carried out jointly by the shenzhen institute of genetics, the university of british columbia, melbourne university, tianjin university, adelaide university, brooke university, charlest university and the british museum。
The moths are mainly ferocious and are the most widely distributed worldwide pests. Every year, the world spends $4 billion to $5 billion on losses and prevention from moths. Global scholars, based on the distribution of cross-facility and moth parasites, have presented the hypothesis that moths originate on the mediterranean coast, south africa and china。
The project team led by yu minsheng took samples from 114 sites in 55 countries and territories on six continents worldwide (except antarctica, where there is no record of the distribution of moths), and identified the moths as having their origin in south america, based on genomic reordering techniques and spectrograph geography and group genomics. The study, which combines the history of human farming and commercial activities, has changed previous perceptions of the origin and evolution of moths and has also provided direction in the search for effective biological protection against natural enemies。
The project group identified 93 genes associated with plant defense substance detoxification and insecticide resistance, analysed the geographical pattern of resistance mutations of moths and their gene-type distribution, illustrated their adaptive genetic base to different environments and pesticides, and provided an important scientific basis for the generation, evolution and governance of resistance of moths。
Relevant paper information: https://doi. Org/10. 1038/s41467-020-161778-9
