@article{fdi:010075165, title = {{A} model of mercury distribution in tuna from the {W}estern and {C}entral {P}acific {O}cean : influence of physiology, ecology and environmental factors}, author = {{H}oussard, {P}. and {P}oint, {D}avid and {T}remblay-{B}oyer, {L}. and {A}llain, {V}. and {P}ethybridge, {H}. and {M}ashou, {J}. and {F}erriss, {B}. {E}. and {B}aya, {P}. {A}. and {L}agane, {C}hristelle and {M}enk{\`e}s, {C}hristophe and {L}etourneur, {Y}. and {L}orrain, {A}nne}, editor = {}, language = {{ENG}}, abstract = {{I}nformation on ocean scale drivers of methylmercury levels and variability in tuna is scarce, yet crucial in the context of anthropogenic mercury ({H}g) inputs and potential threats to human health. {H}ere we assess {H}g concentrations in three commercial tuna species (bigeye, yellowfin, and albacore, n = 1000) from the {W}estern and {C}entral {P}acific {O}cean ({WCPO}). {M}odels were developed to map regional {H}g variance and understand the main drivers. {M}ercury concentrations are enriched in southern latitudes (10 degrees {S}-20 degrees {S}) relative to the equator (0 degrees-10 degrees {S}) for each species, with bigeye exhibiting the strongest spatial gradients. {F}ish size is the primary factor explaining {H}g variance but physical oceanography also contributes, with higher {H}g concentrations in regions exhibiting deeper thermoclines. {T}una trophic position and oceanic primary productivity were of weaker importance. {P}redictive models perform well in the {C}entral {E}quatorial {P}acific and {H}awaii, but underestimate {H}g concentrations in the {E}astern {P}acific. {A} literature review from the global ocean indicates that size tends to govern tuna {H}g concentrations, however regional information on vertical habitats, methylmercury production, and/or {H}g inputs are needed to understand {H}g distribution at a broader scale. {F}inally, this study establishes a geographical context of {H}g levels to weigh the risks and benefits of tuna consumption in the {WCPO}.}, keywords = {{PACIFIQUE}}, booktitle = {}, journal = {{E}nvironmental {S}cience and {T}echnology}, volume = {53}, numero = {3}, pages = {1422--1431}, ISSN = {0013-936{X}}, year = {2019}, DOI = {10.1021/acs.est.8b06058}, URL = {https://www.documentation.ird.fr/hor/fdi:010075165}, }