Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Physiological Entomology 241-245 N-15 content Macrolophus pygmaeus phytophagy stable isotope zoophytophagy 2013 fdi:010060544 ENG Physiological Entomology 0307-6962 ISI:000322743600008 3 10.1111/phen.12028 https://www.documentation.ird.fr/hor/fdi:010060544 https://www.documentation.ird.fr/intranet/publi/2013/09/010060544.pdf 38 Horizon (IRD) The consumption of plants by the zoophytophagous bug Macrolophus pygmaeus Rambur (Heteroptera : Miridae) in relation to the presence or absence of prey is monitored for 7 days. Tobacco plants enriched with N-15, a stable, nonradioactive isotope of nitrogen, are used for characterization. In the absence of prey, the relationship between time and N-15 content (which equates to plant feeding) is linear, with a constant daily accumulation of N-15; however, if prey are available, the mathematical relationship becomes curvilinear. From day 1 to day 5, feeding on plants is independent of the consumption of prey. The rate of N-15 accumulation decreases in the presence of prey after day 5, whereas the number of prey eaten remains unchanged. 076 ; 080 UR022