This study examined herbivory rates and chemical defense mechanism in leaves of Miconia cabucu Hoene (Melastomataceae)at different development stages and environments. We also identified variations of these data in relation to seasonality and climaticfactors. Young and mature leaves from 40 individuals were sampled at the border and the interior of a remnant area for theherbivory analysis. The chemical analysis was accomplished in order to detect secondary metabolites also in young and matureleaves of different development stages and environments. Young individuals were generally more attacked than adults. Higherherbivory rates were observed for mature leaves of young individuals, for both edge and interior. The chemical analysis presentedpositive results for phenolic compounds, flavonoids, tannins, and coumarins. Mature leaves showed higher phenolic compoundsand flavonoids concentration. For the border area,higher contents was detected on summer, and for the interior, higher contentson winter. The relative air humidityand pluviositywere positivelycorrelated with herbivoryrates, while insolation and photoperiodwere negatively correlated. The results of herbivory and their secondary metabolites demonstrate the importance of theserelationships in Miconia cabucu, and its value for preservation and biodiversity.
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