Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Journal of Insect Behavior 614-621 Zoophytophagy cannibalistic behaviour intraspecific predation mirid 2013 fdi:010060412 ENG Journal of Insect Behavior 0892-7553 ISI:000320045500012 4 10.1007/s10905-013-9379-3 https://www.documentation.ird.fr/hor/fdi:010060412 https://www.documentation.ird.fr/intranet/publi/2013/07/010060412.pdf 26 Horizon (IRD) Cannibalism and the effects of host plant, sex, time and food resources on its expression were studied for the zoophagous mirid Macrolophus pygmaeus Wagner (Hemiptera: Miridae). Cannibalistic behaviour was studied by offering 5 conspecific larvae (first instar) to newly emerging adults. Four treatments were studied: without water, with water only, with a host plant (tobacco) and with both a host plant and prey (eggs of Ephestia kuehniella). Cannibalism was observed in all treatments. In the "host plant + eggs of E. kuehniella" treatment, very few individuals displayed cannibalistic behaviour. The proportion of cannibalism was only reduced when eggs of E. kuehniella were offered. Water (free or via a host plant) was very important for both survival and feeding. The cannibalistic behaviour of M. pygmaeus should be taken into account when planning a release strategy in the context of biological control. 080 ; 076 UR022 Tunisie