Lorenzo M. E. auteur aut IRD Grille G. auteur aut IRD Basso C. auteur aut IRD Bonato Olivier auteur aut IRD text journalArticle eng text/pdf born digital access Whiteflies Bemisia tabaci (Gennadius) and Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) are important pests in pepper (Capsicum annuum L.) and tomato (Solanum lycopersicum L.) crops in many countries. Contrary to what is observed for all other countries, in Uruguay, B. tabaci is mainly found on pepper and rarely on tomato, while T. vaporariorum is exclusively found on tomato. This study tested the oviposition preferences and biotic potential of these two whiteflies reared on both host plants. The developmental time, survival rates, longevity, fecundity and main population parameters were characterized. Both whitefly species showed different preference patterns regarding their host plants. T. vaporariorum preferred tomato instead of pepper to oviposit. Their developmental time is longer on pepper. B. tabaci preferred pepper, but the difference from tomato was not very strong. Pepper affects the biotic expression of T. vaporariorum negatively, while B. tabaci is able to develop equally on both host plants. These results show that the distribution differences of both whiteflies observed on both host plants could have a biological basis. specialized Development time Fecundity Longevity Population parameters Solanum lycopersicum Capsicum annuum URUGUAY 076 10 4 293-301 2016 1872-8855 https://www.documentation.ird.fr/hor/fdi:010067705 10.1007/s11829-016-9434-z 1872-8855 [F B010067705] https://www.documentation.ird.fr/hor/fdi:010067705 https://www.documentation.ird.fr/intranet/publi/2016/08/010067705.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2016-09-05 2017-08-23 fdi:010067705 fre