Seasonality of birth and diet of pigs from stable isotope analyses of tooth enamel (δ18O, δ13C): a modern reference data set from Corsica, France

► Tooth enamel δ13C and δ18O are linked to diet and climate. ► Sequential sampling was performed on pig teeth to map enamel δ13C and δ18O. ► A protocol was defined for the study of pig diet and birth seasonality. ► The δ18O of the two first incisors may be combined to investigate birth seasonality. ► Male canines provide the best δ13C record for diet reconstruction.