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Researchers have successfully detected the environmental DNA (Edna) of Argentine ants in top soil samples from Kobe Port Island and Kyoto Fukushima, both of which have long been damaged by this invasive species.
This method allows scientists to easily and accurately understand the habitat distribution and hot spots of global invasive ant species ( *3 ), such as fire ants that cause major damage
In the context of globalization, the transportation of goods and commodities between countries is increasing
In the case of long-term use of pesticides like 1, it is difficult to stop the use of pesticides on a non-scientific basis, although this is a problem from the perspective of protecting the natural environment and ecosystems, because the range of species distribution is not easy to understand.
Environmental DNA analysis is a biological monitoring method introduced in the field of ecology and conservation biology around 2008.
Research methods and findings
Argentine ant-specific DNA analysis
The researchers designed a real-time PCR analysis for Argentine ants and verified the specificity of the analysis through experiments
Select surface sample locations and their respective pest control history
Surface samples were collected from a total of four locations in the Fushimi district of Kyoto to test whether they have eDNA from Argentine ants
Using surface soil samples to test eDNA of Argentine ants
Environmental DNA of Argentine ants was found in samples from FM-1 and FM-2 sites.
Conclusion and further development
1.
2.
3.
Glossary
*1 Environmental DNA (eDNA): This is DNA derived from organisms found in the environment, such as in water or on the ground
*3 Invasive ant species: These species have spread beyond their country of origin and have established their own territories in countries around the world
Journal Reference :
Tetsu Yasashimoto, Masayuki K.