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The different types of cookies used on this site

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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.

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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:

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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 :


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Last update: May 2021

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Why is fish reproduction research necessary?

An understanding of the fundamental processes determining fish reproduction is essential in order to understand species-specific reproduction strategies and triggers; to control sex ratios, puberty...
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Which are the main fish species studied?

The primary species are goldfish, carp and rainbow trout. However, research has also been carried out on salmon, catfish, sea bass, sea bream, eel and tilapia. Other species such as cod, flatfish,...
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What environmental factors control fish reproductive cycles in nature?

Fish exhibit both seasonal (daylength influenced) and daily (light/dark cycle influenced) endogenous rhythms. If they are maintained in constant environmental conditions of temperature and...
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What is broodstock?

In aquaculture, this is a group of sexually mature male and female individuals, kept separate for breeding purposes. The advantage of maintaining a broodstock is that eggs and fry can be produced in...
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What defines puberty and why is timing of puberty important in fish farming?

Puberty is the development period covering the transition from an immature juvenile to a mature adult reproductive system. The initiation of puberty in males is marked by the onset of sperm...
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How is sex determined in fish?

In numerous species of fish, sex is determined principally genetically. For most fish species, the differentiation of the gonad into a testis or an ovary can be strongly influenced by hormonal,...
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How is fish sex controlled in fish farming?

Fish sex may be manipulated by the direct application of hormones. However, direct hormonal methods are not permitted in many countries, indeed within the European Union only the use of certain...
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