@article{fdi:010074333,
  title = {{S}table isotope analyses revealed the influence of foraging habitat on mercury accumulation in tropical coastal marine fish},
  author = {{L}e {C}roizier, {G}. and {S}chaal, {G}. and {P}oint, {D}avid and {L}e {L}oc'h, {F}ran{\c{c}}ois and {M}achu, {E}ric and {F}all, {M}. and {M}unaron, {J}ean-{M}arie and {B}oye, {A}. and {W}alter, {P}. and {L}a{\¨e}, {R}aymond and {T}ito de {M}orais, {L}uis},
  editor = {},
  language = {{ENG}},
  abstract = {{B}ioaccumulation of toxic metal elements including mercury ({H}g) can be highly variable in marine fish species. {M}etal concentration is influenced by various species-specific physiological and ecological traits, including individual diet composition and foraging habitat. {T}he impact of trophic ecology and habitat preference on {H}g accumulation was analyzed through total {H}g concentration and stable isotope ratios of carbon (delta {C}-13) and nitrogen (delta {N}-15) in the muscle of 132 fish belonging to 23 different species from the {S}enegalese coast ({W}est {A}frica), where the marine ecosystem is submitted to nutrient inputs from various sources such as upwelling or rivers. {S}pecies-specific ecological traits were first investigated and results showed that vertical (i.e. water column distribution) and horizontal habitat (i.e. distance from the coast) led to differential {H}g accumulation among species. {C}oastal and demersal fish were more contaminated than offshore and pelagic species. {I}ndividual characteristics therefore revealed an increase of {H}g concentration in muscle that paralleled trophic level for some locations. {C}onsidering all individuals, the main carbon source was significantly correlated with {H}g concentration, again revealing a higher accumulation for fish foraging in nearshore and benthic habitats. {T}he large intraspecific variability observed in stable isotope signatures highlights the need to conduct ecotoxicological studies at the individual level to ensure a thorough understanding of mechanisms driving metal accumulation in marine fish. {F}or individuals from a same species and site, {H}g variation was mainly explained by fish length, in accordance with the bioaccumulation of {H}g over time. {F}inally, {H}g concentrations in fish muscle are discussed regarding their human health impact. {N}o individual exceeded the current maximum acceptable limit for seafood consumption set by both the {E}uropean {U}nion and the {F}ood and {A}griculture {O}rganization of the {U}nited {N}ations. {H}owever, overconsumption of some coastal demersal species analyzed here could be of concern regarding human exposure to mercury.},
  keywords = {{M}ethylmercury sources ; {T}rophic ecology ; {F}eeding habitat ; {M}etal bioaccumulation ; {C}hemical tracers ; {I}sotopic niche ; {SENEGAL} ; {SAINT} {LOUIS} ; {DAKAR} ; {CASAMANCE} ; {SALOUM}},
  booktitle = {},
  journal = {{S}cience of the {T}otal {E}nvironment},
  volume = {650},
  numero = {2},
  pages = {2129--2140},
  ISSN = {0048-9697},
  year = {2019},
  DOI = {10.1016/j.scitotenv.2018.09.330},
  URL = {https://www.documentation.ird.fr/hor/fdi:010074333},
}