Know more

Our use of cookies

Cookies are a set of data stored on a user’s device when the user browses a web site. The data is in a file containing an ID number, the name of the server which deposited it and, in some cases, an expiry date. We use cookies to record information about your visit, language of preference, and other parameters on the site in order to optimise your next visit and make the site even more useful to you.

To improve your experience, we use cookies to store certain browsing information and provide secure navigation, and to collect statistics with a view to improve the site’s features. For a complete list of the cookies we use, download “Ghostery”, a free plug-in for browsers which can detect, and, in some cases, block cookies.

Ghostery is available here for free:

You can also visit the CNIL web site for instructions on how to configure your browser to manage cookie storage on your device.

In the case of third-party advertising cookies, you can also visit the following site:, offered by digital advertising professionals within the European Digital Advertising Alliance (EDAA). From the site, you can deny or accept the cookies used by advertising professionals who are members.

It is also possible to block certain third-party cookies directly via publishers:

Cookie type

Means of blocking

Analytical and performance cookies

Google Analytics

Targeted advertising cookies


The following types of cookies may be used on our websites:

Mandatory cookies

Functional cookies

Social media and advertising cookies

These cookies are needed to ensure the proper functioning of the site and cannot be disabled. They help ensure a secure connection and the basic availability of our website.

These cookies allow us to analyse site use in order to measure and optimise performance. They allow us to store your sign-in information and display the different components of our website in a more coherent way.

These cookies are used by advertising agencies such as Google and by social media sites such as LinkedIn and Facebook. Among other things, they allow pages to be shared on social media, the posting of comments, and the publication (on our site or elsewhere) of ads that reflect your centres of interest.

Our EZPublish content management system (CMS) uses CAS and PHP session cookies and the New Relic cookie for monitoring purposes (IP, response times).

These cookies are deleted at the end of the browsing session (when you log off or close your browser window)

Our EZPublish content management system (CMS) uses the XiTi cookie to measure traffic. Our service provider is AT Internet. This company stores data (IPs, date and time of access, length of the visit and pages viewed) for six months.

Our EZPublish content management system (CMS) does not use this type of cookie.

For more information about the cookies we use, contact INRA’s Data Protection Officer by email at or by post at:

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

Dernière mise à jour : Mai 2018

Menu Institut Sophia Agrobiotech Logo Marque Etat - République Française Logo_INRAE_noir Logo Université Côte d'Azur CNRS

Home page

Institut Sophia Agrobiotech

UMR INRA - Univ. Nice Sophia Antipolis - Cnrs

Pest Management Science

10 April 2018

2018 John Wiley & Sons, Inc.
© Pest Management Science
Nitrogen and water inputs to tomato plant do not trigger bottom‐up effects on a leafminer parasitoid through host and non‐host exposures



Bottom‐up and top‐down forces are major components of biological control against pests in an agro‐ecosystem. Understanding the multi‐trophic interactions between plants and secondary consumers would help optimize pest control strategies. We manipulated nitrogen and/or water inputs to tomato plants (Solanum lycopersicum) to test whether these manipulations could trigger bottom‐up effects on the parasitoid Necremnus tutaevia host (Tuta absoluta) and/or non‐host (Bemisia tabaci) exposures, and compared the control efficacy of N. tutae on T. absoluta in the presence and absence of B. tabaci.


The results showed no cascading effects of plant nitrogen and/or water inputs on N. tutaevia either host or non‐host exposure. The bottom‐up force was mitigated by chewing or sap‐feeding insect consumers at the second energy level. By contrast, the top‐down force on T. absoluta from parasitoids was enhanced by an additionally provided non‐host, which could produce alternative food sources extending N. tutae longevity and enhancing the fitness of its offspring.


Our results provided evidence for the combination of bottom‐up and top‐down approaches in tomato integrated pest management programs. © 2017 Society of Chemical Industry


integrated pest management, biological, control plant–herbivore interactions, host‐feeding, Necremnus tutae, Tuta absoluta

Dong Yong‐Cheng, Han Peng, Niu Chang‐Ying, Zappalà Lucia, Amiens‐Desneux Edwige, Bearez Philippe, Lavoir Anne‐Violette, Biondi Antonio, and Desneux Nicolas (2017). Nitrogen and water inputs to tomato plant do not trigger bottom‐up effects on a leafminer parasitoid through host and non‐host exposures. Pest Management Science 74, 516–522. DOI: 10.1002/ps.4750

Site : View online >>