@article{fdi:010076603,
  title = {{T}rophic resource partitioning of two snook fish species ({C}entropomidae) in tropical estuaries in {B}razil as evidenced by stable isotope analysis},
  author = {{G}onzalez, {J}. {G}. and {M}{\'e}nard, {F}r{\'e}d{\'e}ric and {L}e {L}oc'h, {F}ran{\c{c}}ois and de {A}ndrade, {H}. {A}. and {V}iana, {A}. {P}. and {F}erreira, {V}. and {F}redou, {F}. {L}. and {L}ira, {A}. {S}. and {M}unaron, {J}ean-{M}arie and {F}redou, {T}.},
  editor = {},
  language = {{ENG}},
  abstract = {{W}e investigated the trophic niches and the resource partitioning of two snook species, the common ({C}entropomus undecimalis) and the fat snook ({C}. parallelus), in four tropical estuaries of the northeastern {B}razil, using stable isotope analyses of carbon (delta {C}-13) and nitrogen (delta {N}-15). {F}ish specimens, mainly juveniles, basal resources and a primary consumer were collected in 2015 during dry and rainy seasons in all estuaries, which exhibited differences in system size, geomorphologic shapes, levels of sea access and anthropic pressures. {P}otential effect of factors like fish body length, estuary and seasonality on isotope ratios were investigated. {P}ositive relationships between the size of fish and delta {N}-15 values were found, regardless the species. {O}ur results indicated that snooks can be characterized as secondary consumers and have close trophic niches in most estuaries. {T}rophic overlaps were more pronounced within the largest estuaries ({C}atuama and {S}anta {C}ruz), whereas smaller systems that have restricted connections to the sea presented low isotopic niche overlap between both species ({S}uape and {S}irinhaem). {M}oreover, a higher variability of delta {C}-13 and delta {N}-15 values in snooks was found in larger estuaries undergoing stronger influences from coastal adjacent waters. {A}lthough we were not able to detect clear seasonal effects, greater isotopic overlaps were found during the rainy season. {D}espite the lack of intrinsic differences in life history traits, both species, dominated by juveniles, shared similar trophic niches in these environments.},
  keywords = {{B}rackish water fish ; {T}rophic relationships ; {C}arbon ; {N}itrogen ; {C}entropomus ; {BRESIL} ; {ATLANTIQUE} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{E}stuarine {C}oastal and {S}helf {S}cience},
  volume = {226},
  numero = {},
  pages = {106287 [11 ]},
  ISSN = {0272-7714},
  year = {2019},
  DOI = {10.1016/j.ecss.2019.106287},
  URL = {https://www.documentation.ird.fr/hor/fdi:010076603},
}