@inproceedings{fdi:010091618,
  title = {{L}inking life traits and {D}ynamic {E}nergy {B}udget parameters to better understand domoic acid contamination in five pectinid species [r{\'e}sum{\'e}]},
  author = {{L}e {M}oan, {E}. and {P}ecquerie, {L}aure and {H}{\'e}garet, {H}. and {L}agos, {P}. and {H}eyer, {L}. and {J}ean, {F}. and {F}lye-{S}ainte-{M}arie, {J}. and {R}{\'e}gnier-{B}risson, {L}. and {L}luch-{C}ota, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{S}pecies of the {P}ectinidae family are among the most fished and cultured molluscs species worldwide. {B}y their filtration activity, pectinid species can accumulate toxins produced by their prey. {P}articularly,





domoic acid ({DA}), the amnesic shellfish toxin produced by diatoms of the genus {P}seudo-nitzschia. {H}owever, levels of contamination and depuration rates are species-specific. {S}pecies can be placed on a





gradient from 'slow depurator" to 'fast depurator'. {P}rocesses to explain these differences are not yet known. {H}ere, five socio-economically important species for which life traits data is available were





compared. {T}he king scallop, {P}ecten maximus, accumulates the highest concentrations and when contaminated retains the toxin for a very long time. {T}he {A}tlantic deep-sea scallop, {P}lacopecten





magellanicus, also bioaccumulates and relatively slowly decontaminates {DA}. {T}hey are known as 'slow depurators'. {I}n contrast, the variegated scallop, {M}imachlamys varia, the {C}hilean scallop, {A}rgopecten





purpuratus and the giant lion's paw, {N}odipecten subnodosus are known as 'fast depurators' with lower {DA} concentrations accumulated and faster depuration. {W}hile some hypotheses have been made to





explain the long retention of {P}. maximus and the differences between species, processes are not yet established. {T}his is why, comparing "slow depurators" and "fast depurators" may help understanding





these processes. {T}oxin kinetics are linked to the organism metabolism, and it is hypothesised that differences in the toxin retention between species can be explained by physiological differences. {T}o





investigate physiological differences, species were compared within the same conceptual and quantitative framework provided by a bioenergetic model based on {D}ynamic {E}nergy {B}udget ({DEB})





theory. {DEB} models already exist for {P}. maximus, {A}. purpuratus and {P}. magellanicus and two new species were added to the {DEB} species collection: {M}. varia and {N}. subnodosus. {O}ne of the strengths of {DEB}





theory, is the possibility to compare species based on parameter values which are linked to physiological traits. {I}n this study, we want to see if it is possible to identify one or several {DEB} parameters that could





drive the 'slow' and 'fast depurators' traits of pectinid species. {T}he originality of our method is to compare how different are {DEB} parameters when estimated for a single species and for several species





at the same time. {A}fter a comparison of life traits, particularly age and length at life cycle transitions and reproduction strategy, physiological hypotheses were defined to base the estimation of {DEB} parameters.





{T}hen, emphasis was made on specific assimilation and maintenance costs parameters for toxin kinetic. {S}pecies comparison and hypothesis on parameters that could explained the differences between slow




and 'fast depurators' will be presented in this communication.},
  keywords = {{ATLANTIQUE} ; {CHILI} ; {PACIFIQUE}},
  numero = {},
  pages = {58},
  booktitle = {23rd {I}nternational {P}ectinid {W}orkshop, {A}pril 24th - 30th 2024, {D}ouglas, {I}sle of {M}an : book of abstracts},
  year = {2023},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091618},
}