Fig. 3From: Population variation alters aggression-associated oxytocin and vasopressin expressions in brains of Brandt’s voles in field conditionsThe association between population density and mRNA expression of AVP, AVPR, OT and OTR in brain areas of AMYG, MPOA and PVN. The fitted lines are presented with their 95% confidence interval. C, control enclosures; F, food supplementation enclosures; LG, light grazing enclosure; MG, moderate grazing enclosure; LP, light rain supplementation enclosure; MP, moderate rain supplementation enclosure. Data are shown as mean ± SE. Asterisks indicate significant differences between density groups (*P < 0.05; **P < 0.01; ***P < 0.001)Back to article page