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


Zone de texte éditable et éditée

Gamete Physiology

Laboratories working on gamete physiology.

Research Application: Spawning control and broodstock management

Description of research: The New Jersey Academy for Aquatic Sciences promotes the understanding, appreciation and protection of aquatic life and habitats through research, education and youth development programs. The Academy is active in species survival and conservation efforts. Research focuses on the study of the reproductive processes of aquatic animals to provide alternative means for breeding, or aquaculture. Currently a comprehensive study is being undertaken on the reproductive biology of Apogonidae, a large family of marine and mostly coral reef associated fishes. Research is in progress on the origin and direct development (lack of a planktonic dispersing larval stage) within this group and its phylogenetic significance. Other species the Academy studies are jellyfish, sea ravens, gobies, and the Bangaii cardinalfish (Pterapogon kauderni).

Lead researcher(s): Dr Alejandro A. Vagelli

Contact details: Director of Science & Conservation, New Jersey Academy for Aquatic Sciences, 1 Riverside Drive, Camden, NJ 08103. Tel:(856) 361-1026; Fax:(856) 365-3318

Website: NJAAS
Research Group: Endocrinology & Metabolism

Research Application: Puberty control

Description of research: Regulation of testis maturation, in particular of spermatogonial stem cell activity and spermatogenesis, by endocrine and paracrine signalling mechanisms. Identity and role of hormone / growth factor receptors in the regulation of spermatogenesis.

Lead researcher(s): Jan Bogerd (molecular biology) and Rüdiger W. Schulz (morphology, physiology)

Contact details: Utrecht University, Dept Biology, Postbus 80058, 3508 TB Utrecht, Netherlands

Institute website:
Research Group: Reproductive biology

Research Application: Sex control, puberty control, spawning control, broodstock management

Description of research: The study of reproductive biology and endocrinology in finfish. The identification of reproductive dysfunctions occuring in male and female brood fish in captivity. The development of pharmacological methods for the control of reproduction, induction of spawning and improvement of sperm quality in commercially important cultured fish. A major application of this research is the development of controlled-release delivery systems (implants) for agonists of the neuropeptide gonadotrophin-releasing hormone (GnRHa). Species of interest include the European sea bass (Dicentrarchus labrax), shi drum (umibrina cirrosa), dusky grouper (Epiniephelus marginatus), greater amberjack (Seriola dumerili) and atlantic bluefin tuna (Thunnus thynnus).

Lead researcher(s): Constantinos C. MYLONAS

Contact details: Hellenic Centre for Marine Research, Institute of Aquaculture, Ex US Military Base of Gournes, PO Box 2214, Iraklion, Crete 71003.
Research Group: Fish Reproduction

Research Application: Fertility control, broodstock management

Description of Research: The research is directed towards:

(a)Cryobiology of fish spermatozoa and embryonic cells; biotechnologies for regenerating fish genomes; development of genetic analysis tools adapted to cryoconservation and regeneration. The application of this research is orientated towards the creation and management of cryobanks for freezing fish sperm and embryos, with the aim of :(i)conserving fish genetic resources for fish farming purposes; (ii)conserving genetic resources for endangered fish species. This second objective follows an approach that considers not only the conservation of the species themselves, but also the protection and restoration of the natural environment.

(b)Genomic analysis of oocyte maturation and egg quality in fish; understanding the molecular mechanisms triggering oocyte/follicle competence acquisition and egg quality. The effects of endocrine disrupters on oocyte maturation and egg quality are also being studied. This research has important practical applications to the fish farming industry: (i)synchronising egg production during the reproductive season in order to obtain homogenous cohorts of fry; (ii)obtaining eggs out of the reproductive season, to ensure a regular supply of fry throughout the year; (iii)controlling egg quality in all types of farming conditions.

Lead Researcher(s): (a)Cathérine LABBE, Pierre-Yves LE BAIL; (b)Julien BOBE

Contact Details: INRA-SCRIBE, Campus Scientifique de Beaulieu, 35042 Rennes cedex.

Institute Website:
Scientific Interest: Endocrine physiology, stress physiology and immunity, gamete physiology, gonad physiology

Description of research: The focus is on important marine aquaculture species, such as the black porgy and the grouper. Key research areas are: fish reproductive physiology, sex differentiation and sex change in fish, reproductive endocrinology and reproduction in coral, hormone regulation in fish, maturation mechanisms in fish, environmental physiology and immunity in fish, and the reproductive physiology of prawns.

Lead researcher(s): Ching Fong CHANG

Contact details: Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan 20224

Website:National Taiwan Ocean University
Research Group: Fish physiology

Research Application: Fertility control, spawning control, broodstock management

Description of research: Development of surrogate broodstock technology in fish by germ cell transplantation; one of the final objectives of this study is to make surrogate mackerel recipients produce bluefin tuna gametes. Cryopreservation of fish germ cells; since there is no cryopreservation technique for fish eggs and embryos currently available, this will be a breakthrough for preservation of fish genetic resources. In vitro culture of fish germ cells in order to use them as an alternative to ES cells. Analysis of endocrine control of fish germ cell proliferation and differentiation.

Lead researcher(s): Goro YOSHIZAKI

Contact details: Tokyo University of Marine Science & Technology, Dept of Marine Biosciences, 4-5-7 Konan, Minato-Ku, Tokyo, 108-8477 Japan.

Research application: Spawning control

Description of research: To apply and adjust available bio-technologies to control reproduction and obtain the spawning of good quality eggs. Activities include: acclimatisation of wild broodstock; manipulation of environmental parameters, holding systems and nutrition in order to obtain maturation to advanced stages, vitellogenesis and spermatogenesis; determination of stage of maturity; hormone induced spawning; environmentally controlled spawning; determination of egg and larval quality. The team is currently working on the meagre (Argyrosomus regius), Senegal sole (Solea senegalensis) and gilthead seabream (Sparus aurata).

Lead researcher(s): Neil Duncan, Alicia Estevez, Cristobal Aguilera

Contact details: IRTA Sant Carles de la Rapita, Crta. Poble Nou, km. 5.5, AP200, 43540 Sant Carles de la Rapita, Tarragona, Spain. Tel. +34 977745427, Fax. +34 977744138.