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


Shelf life

CAS and PHP session cookies

Login credentials, session security



Saving your cookie consent choices

12 months

Audience measurement cookies (AT Internet)

Name of the cookie


Shelf life


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

13 months


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

13 months


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 or by post at :


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

Last update: May 2021

Menu Logo Principal Institut Agro Rennes Angers Université Rennes Logo Igepp

Home page

FONDECYT Regular Gracilaria chilensis

  • 5 years programme (2017-2021)
  • Coordinator: Marie-Laure Guillemin (Universidad austral de Chile, ~165k€). For Igepp, Solenn Stoeckel (~3k€).
  • Contact:

Evolutionary genomics of Gracilaria chilensis, a partially clonal cultivated alga in Chile

G. chilensis is a species of Gracilariaceae that plays a highly relevant place in the agar market world wide. It is one of the few species of algae that has been truly domesticated (Valero et al. In revision) and is indeed the only species of seaweed cultivated at an industrial level in Chile (Buschmann et al. 2008). Demographic, eco-physiological and genetic studies have demonstrated that the species have passed through multiple expansion and transoceanic colonization events within the Pacific. Also, recurrent bottlenecks could have affected the populations in Chile and domestication and cultivation have modified in depth the selective pressure exerted on cultivated individuals, the life history traits and the demographic and genetic structure of farmed populations (Guillemin et al. 2008 and 2014b and references therein). This species represents a very interesting model to reconstruct a complex evolutionary scenario of successive bottlenecks due to a primary introduction followed by exploitation, domestication and cultivation. In addition, contrasting patterns of genetic diversity across the whole genome between farms and natural populations may allow to identify, for the first time in a seaweed, the genomic signature of domestication.

We aim in this project deciphering the complex evolutionary history of G. chilensis using population genomic tools and a comprehensive sampling including populations from the whole distribution range of the species and individuals living in contrasting habitats (rocky substrates, soft substrates that have not been highly influenced by human activities and farms planted in soft substrate).

Demecology will be implied in this project to develop mechanistic population genetics model to test for successive bottlenecks, genomic signature of adaptation and human selection in partially clonal populations and will participate to analyze the genotypic diversity, level of heterozygosity and reproductive mode between fixed and floating populations.