%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Bonato, Olivier
%A Deschamps, C.
%A Hamdi, F.
%A Ridray, G.
%A Chadoeuf, J.
%T Spatiotemporal distribution of Macrolophus caliginosus in protected tomato crop (Heteroptera : Miridae)
%D 2011
%L fdi:010053705
%G ENG
%J Entomologia Generalis
%@ 0171-8177
%K Macrolophus caliginosus (Wagner 1951) ; Bemisia tabaci ; density ; dispersal ; distribution ; predation
%M ISI:000292625600008
%N 1-2
%P 91-102
%U https://www.documentation.ird.fr/hor/fdi:010053705
%> https://www.documentation.ird.fr/intranet/publi/2011/08/010053705.pdf
%V 33
%W Horizon (IRD)
%X The characteristics of the generalist predator Macrolophus caliginosus made it the main actor in the biological control of Trialeurodes vaporariorum in protected tomato crops; but its action on Bemisia tabaci remains unclear. Because B tabaci does not belong to the natural host spectrum of M caliginosus, the feeding foraging behaviour of the predator is questioned when B tabaci is the only prey available. The movements of M caliginosus and its aggregation on B tabaci populations were studied in real conditions of production in two greenhouses equipped with insect-proof nets. Macrolophus caliginosus was first introduced on the crop. Five weeks later, 4 focus (per greenhouse) of B tabaci infestation were generated. In the absence of B tacaci, the M caliginosus population colonized the whole greenhouse and succeeded in maintaining equal larval density for two generations. The density of predator presents on plants infested by B tabaci was significantly higher than the one measured on the other plants. The presence of prey on plants infested with B tabaci probably decreased the intrinsic mortality of predator larvae and enhanced oviposition of adults thereby enhancing their fitness due to feeding.
%$ 076