@article{fdi:010078107, title = {{M}easuring ontogenetic shifts in central-place foragers : a case study with honeybees}, author = {{R}equier, {F}abrice and {H}enry, {M}. and {D}ecourtye, {A}. and {B}run, {F}. and {A}upinel, {P}. and {R}ebaudo, {F}ran{\c{c}}ois and {B}retagnolle, {V}.}, editor = {}, language = {{ENG}}, abstract = {{M}easuring time-activity budgets over the complete individual life span is now possible for many animals with the recent advances of life-long individual monitoring devices. {A}lthough analyses of changes in the patterns of time-activity budgets have revealed ontogenetic shifts in birds or mammals, no such technique has been applied to date on insects. {W}e tested an automated breakpoint-based procedure to detect, assess and quantify shifts in the temporal pattern of the flight activities in honeybees. {W}e assumed that the learning and foraging stages of honeybees will differ in several respects, to detect the age at onset of foraging ({AOF}). {U}sing an extensive dataset covering the life-long monitoring of 1,167 individuals, we compared the {AOF} outputs with the more conventional approaches based on arbitrary thresholds. {W}e further evaluated the robustness of the different methods comparing the foraging time-activity budget allocations between the presumed foragers and confirmed foragers. {W}e revealed a clear-cut learning-foraging ontogenetic shift that differs in duration, frequency and time of occurrence of flights. {A}lthough {AOF} appeared to be highly plastic among bees, the breakpoint-based procedure seems better capable to detect it than arbitrary threshold-based methods that are unable to deal with inter-individual variation. {W}e developed the aof r-package including a broad range of examples with both simulated and empirical datasets to illustrate the simplicity of use of the procedure. {T}his simple procedure is generic enough to be derived from any individual life-long monitoring devices recording the time-activity budgets, and could propose new ecological applications of bio-logging to detect ontogenetic shifts in the behaviour of central-place foragers.}, keywords = {age at onset of foraging ; foraging performance ; honeybees ; individual ; life-long monitoring ; life-history traits ; {R}adio-{F}requency ; {ID}entification ; time-activity budgets}, booktitle = {}, journal = {{J}ournal of {A}nimal {E}cology}, volume = {89}, numero = {8}, pages = {1860--1871}, ISSN = {0021-8790}, year = {2020}, DOI = {10.1111/1365-2656.13248}, URL = {https://www.documentation.ird.fr/hor/fdi:010078107}, }