@article{fdi:010079843, title = {{A} {D}ynamic {E}nergy {B}udget simulation approach to investigate the eco-physiological factors behind the two-stanza growth of yellowfin tuna ({T}hunnus albacares)}, author = {{D}ortel, {E}. and {P}ecquerie, {L}aure and {C}hassot, {E}mmanuel}, editor = {}, language = {{ENG}}, abstract = {{T}he growth of yellowfin tuna has been the subject of considerable research efforts since the early 1960s. {M}ost studies support a complex two-stanza growth pattern with a sharp acceleration departing from the von {B}ertalanffy growth curve used for most fish populations. {T}his growth pattern has been assumed to result from a combination of physiological, ecological and behavioral factors but the role and contribution of each of them have not been addressed yet. {W}e developed a bioenergetic model for yellowfin tuna in the context of {D}ynamic {E}nergy {B}udget theory to mechanistically represent the processes governing yellowfin tuna growth. {M}ost parameters of the model were inferred from {P}acific bluefin tuna using body-size scaling relationships while some essential parameters were estimated from biological data sets collected in the {I}ndian {O}cean. {T}he model proved particularly suitable for reproducing the data collected during the {P}acific yellowfin tuna farming experience conducted by the {I}nter-{A}merican {T}ropical {T}una {C}ommission at the {A}chotines {L}aboratory in {P}anama. {I}n addition, model predictions appeared in agreement with knowledge of the biology and ecology of wild yellowfin tuna. {W}e used our model to explore through simulations two major assumptions that might explain the existence of growth stanzas observed in wild yellowfin tuna: (i) a lower food supply during juvenile stage in relation with high infra- and inter-species competition and (ii) ontogenetic changes in food diet. {O}ur results show that both assumptions are plausible although none of them is self-sufficient to explain the intensity of growth acceleration observed in wild {I}ndian {O}cean yellowfin tuna, suggesting that the two factors may act in concert. {O}ur study shows that the yellowfin growth pattern is likely due to behavioral changes triggered by the acquisition of physiological abilities and anatomical traits through ontogeny that result in a major change in intensity of schooling and in a shift in the biotic habitat and trophic ecology of this commercially important tuna species.}, keywords = {{DEB} theory ; {B}ody-size scaling ; {B}ehavioral changes ; {O}ntogeny ; {OCEAN} {INDIEN} ; {PACIFIQUE}}, booktitle = {}, journal = {{E}cological {M}odelling}, volume = {437}, numero = {}, pages = {109297 [12 ]}, ISSN = {0304-3800}, year = {2020}, DOI = {10.1016/j.ecolmodel.2020.109297}, URL = {https://www.documentation.ird.fr/hor/fdi:010079843}, }