biostudies-literatureZhao JDeutsche ForschungsgemeinschaftModern Agriculture Industrial Technology System Special Project-the National Technology System for Conventional Freshwater Fish IndustriesNational Natural Science Foundation of ChinaKey Program of Science and Technology of Zhejiang Province20202172https://www.ebi.ac.uk/biostudies/studies/S-EPMC7735268biostudies-literatureUnknown287(1938)Foraging animals must balance benefits of food acquisition with costs induced by a post-prandial reduction in performance. Eating to satiation can lead to a reduction in locomotor and escape performance, which increases risk should a threat subsequently arises, but limiting feeding behaviour may be maladaptive if food intake is unnecessarily reduced in the prediction of threats that do not arise. The efficacy of the trade-off between continued and interrupted feeding therefore relies on information about the future risk, which is imperfect. Here, we find that black carp (<i>Mylopharyngodon piceus</i>) can balance this trade-off using an <i>a posteriori</i> strategy; by eating to satiation but regurgitating already ingested food when a threat arises. While degrees of satiation (DS) equal toProceedings. Biological sciencesSolving post-prandial reduction in performance by adaptive regurgitation in a freshwater fish.PMC77352682019C02082EXC 2117 – 4220379843177290031902359CARS-45-26Wen YZhu JJordan AZhao JZhu SYe JYe ZfalseSolving post-prandial reduction in performance by adaptive regurgitation in a freshwater fish.Foraging animals must balance benefits of food acquisition with costs induced by a post-prandial reduction in performance. Eating to satiation can lead to a reduction in locomotor and escape performance, which increases risk should a threat subsequently arises, but limiting feeding behaviour may be maladaptive if food intake is unnecessarily reduced in the prediction of threats that do not arise. The efficacy of the trade-off between continued and interrupted feeding therefore relies on information about the future risk, which is imperfect. Here, we find that black carp (<i>Mylopharyngodon piceus</i>) can balance this trade-off using an <i>a posteriori</i> strategy; by eating to satiation but regurgitating already ingested food when a threat arises. While degrees of satiation (DS) equal to2020-01-01T00:00:00Z2020 Nov2026-05-07T12:11:17.415Z2022-02-11T12:39:54.626ZS-EPMC77352683317108110.1098/rspb.2020.2172