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From Twitter

10 July 2024
Citizen Science
In recent months, the IPM Popillia Consortium has collaborated with SPOTTERON to create informational and dissemination materials about the invasive Japanese beetle (Popillia japonica), which has been spreading across Europe for several years. R...
10 June 2024
Citizen Science
Prof. Francesco Nardi (University of Siena) and Prof. Rossella Annoni (junior high school G. Falcone, Cassina de' Pecchi, Milan) have been working together, this past year, with class 2D (12-13 years old pupils) on Popillia within the context of the ...
29 May 2024
Pest management
Project reports
Since 2023, the village of Kloten north of Zurich is not only famous for the Zurich Airport and for having a great ice hockey team, but also for harboring the first Popillia population in Europe north of the Alps. In summer and autumn of 2023, huge e...
IPM_Header_04_D_20230703-191929_1 New insights in Popillia japonica life

New insights in Popillia japonica life

In the past months many field trials and lab experiments gave their results, and they are good results!

In our lab, we found that a family of molecules called "saponins", that are naturally present in alfalfa plants, have a significant antifeedant and insecticidal effects on Popillia. Basing on this molecules, it will be possible to develop a new eco-friendly approach to protect the crops and manage the Popillia infestation

If you want more info:

  •  In field, we tried a lot of different strategies to effectively reduce the numbers of Popillia adults to protect crops. Traps with different shapes and chemicals were tested searching for the best combination to use. We concluded that the long-lasting insecticide-treated net (LLINS) impregnated with alpha-cypermetrin was the most effective, regardless the shape of the attract-and-kill device used. Morever, we noted also that the Popillia flight habits greatly influence the effectiveness of this control method.

If you want more info:

Other strategies using biological control agents were tested to control in field the Japanese beetle adults. An extensive survey was conducted searching for local microorganisms able to infect and kill Popillia adults . At the end of the survey, the most promising biological control agents result two particular strains of entomopathogenic fungi Metharizium brunneum and Metarhizium robertsiiNow, these fungal strains are going to be tested in a newly designed trap specifically created for flying habits of Popillia.

If you want more info:

A very important step to limit the spread of Popillia in Europe is block new introductions (or re-introductions) of this pest. So, the question "Where Japanese beetle comes from?" from an academic interest becomes an important information to better focus the inspecting activity and retaining the achievements laboriously made in the fight against Popillia. We found that both European Popillia outbreaks originate from North America and not from Japan as the species name can suggest. In particular, the Azorean infestation occurred more than 50 years ago originated from the southeastern coast of US, and the more recent Italian and Swiss outbreak cames from New Jersey.

    If you want more info: 

Summary of results achieved in past years about monitoring activities and management strategies against Popillia japonica in Italy were published in a complete and publicly avaliable review.

If you want more info:

Stay tuned for further develops in the fight against Popillia japonica!

Updated interactive map of the Japanese beetle inv...
Popillia japonica documentary on SRF Wissen

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 EU Flag This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 861852