Department of Biology


What would you eradicate?

Short video released at the end of September 2017 by the French “Ragweed Observatory” on our ragweed leaf beetle as a potential biological control agent against Ambrosia artemisiifolia in Europe. The shooting was partially made in our greenhouse and quarantine facility.


On the 2nd November 2016, RAI 3 (TG 3) broadcasted in the science show "Leonardo" a report on the field visit of our experiments in Northern Italy, on the use of the ragweed leaf beetle to control ragweed, Ambrosia artemisiifolia. This field visit was part of the our stakeholder meeting in Rho, Milano, on 28th October 2016.


Stakeholder conference in Rho, Milano, Italy, and visit of field sites in Magnago on 28 October 2016

Fotos Ophraella: Starting with 100 beetles per cage and ending up with no pollen and seeds after 4 months
(left: with beetles, right: without beetles).

Corriere della Sera (Italy), 25 October 2016



Published on 24 September 2015 in “La Liberté”, Fribourg, Switzerland PDF


The ENGAGE project, a 1-hour class about Ambrosia and Ophraella for teachers and students has recently been produced


Radio Interview on SRF2 Kultur vom Samstag, 29. August 2015: Beetle helps allergy sufferers

Click on the image to listen to the SRF2 broadcast (in German)
"Käfer hilft Allergikern. Wer allergisch auf Ambrosia-Pflanzen ist, konnte diesen Sommer aufatmen. Zumindest auf der Alpensüdseite. Denn dort vermehrte sich wegen der diesjährigen Hitze ein bestimmter Käfer besonders stark. Seine Leibspeise: Ambrosia." Wir testen ob der Käfer auch Allergie-Geplagten auf der Alpennordseite helfen könnte.

original radio link:

Ein Käfer als biologische Wunderwaffe: online material 

Salzburger Nachrichten (Austria): 14 August 2015

27 June 2015: International Ragweed Day: the fight goes on!

Click on the logos for press releases!


Radio interview of Heinz: EMISSION « CQFD »

Click on the CQFD logo


2014/09/30 – Review on Ambrosia on 3sat (nano)

Our research on Ambrosia and its potential biocontrol using a leaf beetle has been programmed on several TV stations:

See also this interview of Heinz Müller-Schärer on 3sat.

the link to the second emission



Shots made on 3 July in the greenhouse and quarantine facilities at the University of Fribourg for the TV nano on 3sat ( and Einstein on SRF 1 (

weekend newspaper (Le Matin Dimanche)


For earlier media coverage use this link

Ecology & Evolution - ch du musée - 1700 Fribourg - Tel +41 26 / 300 8835 - Fax +41 26 / 300 9741
heinz.mueller[at] - Swiss University