Recent detections of non-native ambrosia beetles and their fungal associates in Switzerland

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020702%3A_____%2F25%3AN0000210" target="_blank" >RIV/00020702:_____/25:N0000210 - isvavai.cz</a>

Result on the web

<a href="https://www.vulhm.cz/en/forests-future-2025/" target="_blank" >https://www.vulhm.cz/en/forests-future-2025/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Recent detections of non-native ambrosia beetles and their fungal associates in Switzerland

Original language description

Ambrosia beetles are highly successful as invaders because they are often transported internationally with wood packaging and other wood products and because their inbreeding mating system facilitates establishment of invading populations . In 2022, two independent insect surveys in canton Ticino (southern Switzerland) using bottle traps baited with ethanol, and unbaited Polytrap intercept traps revealed the widespread occurrence of several non-native ambrosia beetles . Anisandrus maiche was found to be widespread and very abundant mainly in southern Ticino . This species is native to east Asia and has previously been found as a non-native invasive species in the United States, Canada, western Russia, Ukraine and, in 2021, in northern Italy and subsequently also in Slovenia . Three other ambrosia beetle species were detected in Ticino . Limited surveys in other parts of Switzerland suggest that none of these species has been present elsewhere in the country so far . These and several other ambrosia beetle species were also detected in adjacent countries (in Italy, France and Germany), indicating a wider pattern of recent invasions of ambrosia beetles . Here, we present the results of several surveys documenting the occurrence and known distribution of non-native ambrosia beetles in Switzerland and adjacent countries in Central Europe, along with information on the known host plants and impacts as well as the fungi associated with these beetles . Knowledge of pathways enabling invasions of ambrosia beetles and options for their management will be discussed.

Czech name

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Czech description

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Type

O - Miscellaneous

CEP classification

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OECD FORD branch

40102 - Forestry

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů