Know more

About cookies

What is a "cookie"?

A "cookie" is a piece of information, usually small and identified by a name, which may be sent to your browser by a website you are visiting. Your web browser will store it for a period of time, and send it back to the web server each time you log on again.

Different types of cookies are placed on the sites:

  • Cookies strictly necessary for the proper functioning of the site
  • Cookies deposited by third party sites to improve the interactivity of the site, to collect statistics

Learn more about cookies and how they work

The different types of cookies used on this site

Cookies strictly necessary for the site to function

These cookies allow the main services of the site to function optimally. You can technically block them using your browser settings but your experience on the site may be degraded.

Furthermore, you have the possibility of opposing the use of audience measurement tracers strictly necessary for the functioning and current administration of the website in the cookie management window accessible via the link located in the footer of the site.

Technical cookies

Name of the cookie

Purpose

Shelf life

CAS and PHP session cookies

Login credentials, session security

Session

Tarteaucitron

Saving your cookie consent choices

12 months

Audience measurement cookies (AT Internet)

Name of the cookie

Purpose

Shelf life

atid

Trace the visitor's route in order to establish visit statistics.

13 months

atuserid

Store the anonymous ID of the visitor who starts the first time he visits the site

13 months

atidvisitor

Identify the numbers (unique identifiers of a site) seen by the visitor and store the visitor's identifiers.

13 months

About the AT Internet audience measurement tool :

AT Internet's audience measurement tool Analytics is deployed on this site in order to obtain information on visitors' navigation and to improve its use.

The French data protection authority (CNIL) has granted an exemption to AT Internet's Web Analytics cookie. This tool is thus exempt from the collection of the Internet user's consent with regard to the deposit of analytics cookies. However, you can refuse the deposit of these cookies via the cookie management panel.

Good to know:

  • The data collected are not cross-checked with other processing operations
  • The deposited cookie is only used to produce anonymous statistics
  • The cookie does not allow the user's navigation on other sites to be tracked.

Third party cookies to improve the interactivity of the site

This site relies on certain services provided by third parties which allow :

  • to offer interactive content;
  • improve usability and facilitate the sharing of content on social networks;
  • view videos and animated presentations directly on our website;
  • protect form entries from robots;
  • monitor the performance of the site.

These third parties will collect and use your browsing data for their own purposes.

How to accept or reject cookies

When you start browsing an eZpublish site, the appearance of the "cookies" banner allows you to accept or refuse all the cookies we use. This banner will be displayed as long as you have not made a choice, even if you are browsing on another page of the site.

You can change your choices at any time by clicking on the "Cookie Management" link.

You can manage these cookies in your browser. Here are the procedures to follow: Firefox; Chrome; Explorer; Safari; Opera

For more information about the cookies we use, you can contact INRAE's Data Protection Officer by email at cil-dpo@inrae.fr or by post at :

INRAE

24, chemin de Borde Rouge -Auzeville - CS52627 31326 Castanet Tolosan cedex - France

Last update: May 2021

Menu Logo Principal Logo-Ima-ANR Logo CNRS Logo_IMA_UPEC Logo-IMA_UPMC

ODORSCAPE

The ODORSCAPE project

The terrestrial vegetation releases a large variety of volatile organic compounds that constitute complex olfactory environments (odorscapes). These volatile plant compounds (VPC) play major roles as infochemicals mediating the interactions between organisms. Insects for instance extract from their odorscapes cues essential for their reproduction. Mate or host-plant finding behaviors are largely based on the perception of specific odor signals by their sensory system. There is conclusive evidence that the specialized receptors that detect the behavior-relevant odorants are sensitive to odor background. With the growing likelihood of a rapidly changing environment due to the anthropogenic emissions of greenhouse gases, the composition of future odorscapes in agro-ecosystems will largely depend on the sensitivity of VPC production to single or combined component(s) of global climatic change. Yet, the impacts of such predicable profound changes in odorscapes on insect olfaction have not been properly evaluated. Our project aims at:

1) evaluating qualitatively and quantitatively the effects of major environmental change components on metabolic pathways and emission of VPCs by crop and companion plants in two ecosystems representative of dry and humid temperate agro-ecosystems;

2) analyzing the effects of the altered odorscapes on olfaction of herbivorous insects at gene, neural coding and behavior levels.

Chénaie méditéranéenne

We will analyze the volatile emissions from plants associated in mini ecosystems typical for two different climatic conditions present in France: a dry temperate climate (DT) and a humid temperate climate (HT). Each mini ecosystem will consist of a cultivated plant (corn), a tree (poplar for HT or oak for DT) and a weed which will be grown in controlled conditions under CO2, O3, drought and temperature levels representative of global change. The effects of growing conditions on the main metabolic pathways involved in the production of VPCs will be analyzed. We expect that the volatile emissions from DT and HT under elevated global change factors will affect female choices for oviposition sites and male responses to sex pheromone. Thus, we will identify the natural emissions in two growing conditions, measure the response of insects and reconstitute behaviorally effective modified odorscapes HTO and DTO. The effects of HTO and DTO and their major components on olfactory coding within the antennae and the primary olfactory centres, the antennal lobes, will be investigated. The ability of insects to adapt their behavior to changes in their sensory environment will be evaluated by investigating behavioral plasticity. The effects of long-term exposure to reconstituted odorscapes on the expression of olfactory genes within the antennae will then be tested.

Agrotis ipsilon

Our project will lead to a deeper understanding of the vulnerability to environmental changes of information exchanges inside agro-ecosystems, of the adaptive capacities of plants and insects to global changes and of their potential consequences for the functioning of agro-ecosystems. The expected results will contribute to a better predictability of the evolution of agro-ecosystems under anthropogenic influence and will also have an impact on applied aspects, taking into account that pheromones and plant odorants are used as alternative control measures for insecticides.