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Insects that are harmful to plants

Updated on 08/04/2024

While some insects are essential for plants, others can be detrimental to their health and destroy gardens, forests, wood and crops. In view of climate change and increased international trade, it is vital to identify and manage the multitude of new insects that could potentially become established in France. ANSES is the National Reference Laboratory for the identification of harmful insects.

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Biocontrole Facilitating access to biocontrol solutions: products and macro-organisms

Updated on 15/04/2024

Biocontrol is one way of facilitating the substitution of synthetic plant protection products by alternatives. Although they are of natural origin, these solutions still have to be scientifically assessed before they can be used, to ensure their effectiveness and their safety to health and the environment. ANSES has set up an internal organisation to examine applications for biocontrol plant protection products, in order to be able to achieve the shorter processing times imposed by the French Rural Code.

Ambroisie Ragweed, an invasive plant that is problematic for both health and agriculture

Updated on 05/04/2024

Ragweed is native to North America but has spread to Europe in particular over the last few decades. Its pollen causes allergies, with between 1 and 3.5 million people believed to be affected in France. What is ragweed? Where is it found in France? What are its effects on agriculture? Are there ways of keeping it from spreading? Here is our update on the situation.  

Charancon Rouge The red palm weevil, a pest native to Asia

Updated on 08/04/2024

The red palm weevil (Rhynchophorus ferrugineus) is a beetle that is a particular menace to palm trees. Native to South and South-East Asia, it became established in the south of France in the early 2000s.

Homme Animaux One Health for living beings and ecosystems

Updated on 27/04/2023

One Health aims to promote a multidisciplinary, holistic approach to health issues. Where did this approach come from and what does it involve? How does ANSES apply it when carrying out its activities? Find out in our article.

Des platanes le long d'une route Canker stain : a fungus that threatens plane trees

Published on 18/10/2022

Introduced into France in the 1940s, canker stain of plane trees has been spreading ever since, especially in the southern part of the country. No treatment is available, so the infected plane trees have to be felled. ANSES is working to prevent the disease from spreading.

Xylella Fastidiosa Xylella fastidiosa, a threat to olive trees and hundreds of plants

Published on 19/07/2022

Xylella fastidiosa is a phytopathogenic quarantine bacterium that can infect more than 600 plant species, affecting major agricultural crops such as grapevines, citrus fruits, almonds and olives, as well as herbs and ornamental, forest and wild plants. There are currently no curative measures against this bacterium. To avoid the spread of the disease, therefore, contaminated plants must be grubbed up and destroyed, and the insect vectors controlled. Here is an update on the bacterium, and on what the ANSES Plant Health Laboratory (LSV) is doing to help combat this pest. 

Vecteurs Research on vectors undertaken at ANSES

Updated on 22/04/2022

Some arthropods (a family that includes insects and arachnids) such as ticks and mosquitoes can transmit pathogens that cause diseases in animals, plants and/or humans. Several ANSES laboratories are studying vector-borne diseases transmitted to animals and the ability of vectors to transmit these pathogens. 

Plantes Toxiques Toxic plants

Updated on 02/05/2022

Some toxic plants resemble edible plants and may be confused with them, not only in the wild but also in the garden or vegetable patch. Picking plants for consumption is not without risk: 250 cases of confusion are documented every year. ANSES and the network of poison control centres are drawing attention to the risks of mistaking toxic plants for edible ones. The Agency is calling for greater vigilance and has issued advice on avoiding the risk of poisoning.

Nématode du Pin The pinewood nematode: a threat to French conifers

Updated on 22/04/2022

The pinewood nematode (Bursaphelenchus xylophilus) is a microscopic worm that affects conifers, especially maritime pine. It is a particularly destructive parasite responsible for severe dieback in pine forests. Transmitted by an insect vector, its spread is mainly due to the transport of wood or plants. If this parasite were introduced into France, the Landes area would be at risk due to the widespread presence of maritime pine. As the National and European Reference Laboratory for identification of the pinewood nematode, ANSES has conducted several expert appraisals to assess the risks of introduction and establishment of the organism in France and to recommend management measures for pine wood and bark.

Changement Climatique Climate change and health

Updated on 17/05/2022

Climate change is a reality on which there is broad consensus in the scientific community. Because of the inertia of the climate system, changes to the climate related to human activities will continue for many years, regardless of any measures taken today. Combating climate change, which is part of a more global environmental change, is therefore essential to limit its magnitude.

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