Delatte H. auteur aut IRD Dyuck P. F. auteur aut IRD Triboire A. auteur aut IRD David P. auteur aut IRD Becker N. auteur aut IRD Bonato Olivier auteur aut IRD Reynaud B. auteur aut IRD text journalArticle eng text/pdf born digital access Studies on success or failures of biological invasions by different insect biotypes are scarce and could provide interesting insights into the traits that determine greater or lower ability to invade. Life history traits of invasive whiteflies Bemisia tabaci of the B biotype (known as a worldwide invasive biotype) and of the indigenous biotype Ms (not known as an invader anywhere in the world), both from the island of La Reunion (Indian Ocean), were compared for this purpose. In our study we demonstrated that within a cultivated host plant (tomato), the B biotype differs from the Ms by a combination of several life-history traits. This combination gives the invasive biotype an advantage over the resident both in terms of rapid demographic growth (increased intrinsic rate of increase and associated traits such as short developmental times and high fecundity) and in terms of competition (large adult and offspring sizes), without any recorded trade off. However, in the field the resident biotype remains dominant on non-cultivated hosts (weeds) and in a particular climate (high humidity). This suggests that invasive biotypes are characterized by physiological, morphological and biological adaptations to a disturbed environment created by anthropic activities at different places in the world, while resident biotypes may persist in less altered habitats. specialized Life table Host preference Biological invasions Demography Resident and invasive biotypes Whiteflies 080 076 11 4 1059-1070 2009 1387-3547 https://www.documentation.ird.fr/hor/fdi:010044304 10.1007/s10530-008-9328-9 1387-3547 [F B010044304] https://www.documentation.ird.fr/hor/fdi:010044304 https://www.documentation.ird.fr/intranet/publi/2009/03/010044304.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2009-04-08 2017-08-23 fdi:010044304 fre