Prey palatability influences predator learning and memory

摘要: Aposematic insect species are thought to gain protection from avian predators by advertising their unpalatability with bright or conspicuous coloration. However, individuals within a population may differ in level of chemical defence. Since the speed and strength avoidance learning often assumed be determined degree defence, presence more palatable is decrease value warning Using chicks, Gallus gallus domesticus, as model coloured crumbs flavoured different concentrations quinine sulphate solution for unpalatable prey, we tested these assumptions using colour discrimination task. The mean prey defence was positively correlated learning, negatively ease which learned aversions were reversed. it unclear how palatability influenced since number attacked at asymptote not although reluctance attack an crumb trial We also found that proportion subsequently rejected Our results show importance determining both ingestion rates predators.