@article{fdi:010073099,
  title = {{S}ite fidelity and movements of an amphidromous goby revealed by otolith multi-elemental signatures along a tropical watershed},
  author = {{T}eichert, {N}. and {T}abouret, {H}. and {L}agarde, {R}. and {G}rondin, {H}. and {P}onton, {D}ominique and {P}echeyran, {C}. and {B}areille, {G}.},
  editor = {},
  language = {{ENG}},
  abstract = {{O}tolith microchemistry can provide crucial information to address gaps of knowledge in spatio-temporal ecology of fish species. {H}owever, understanding the seasonal variability of water chemistry and its effect on otolith signatures is needed to interpret fish movements. {O}tolith multi-elemental signatures were used to examine the diadromous migration and small-scale movements of a tropical goby ({S}icyopterus lagocephalus) within a watershed in {L}a {R}eunion {I}sland, {I}ndian {O}cean. {T}he elemental ratios {S}r:{C}a, {B}a:{C}a and {S}r:{B}a recorded monthly in the water of nine sampling sites varied between localities and were correlated with otolith signatures, whereas the {M}g:{C}a signature was not. {T}he incorporation of some trace elements in otoliths was influenced by the size of fish and site where they were caught, reflecting an effect of endogenous and exogenous factors. {D}espite these sources of variation, the elemental signatures did not overlap for three river sections distributed along the 26-km-long watershed. {T}he diadromous migration and fish lifetime movements between these river sections were reconstructed using an original process based on random forest analysis. {T}his approach revealed distinct migratory behaviours after fish entered in the river, with some individuals progressing slowly in the watershed whereas other rapidly reached the upper localities. {A}s adults, {S}.lagocephalus showed a restricted exploratory behaviour and a strong site fidelity to a particular part of the watershed. {T}he detection of adult movement was typically only between adjacent locations and is possibly explained by shifts in local intraspecific hierarchies and/or displacement during extreme discharge caused by cyclones.},
  keywords = {habitat discrimination ; individual life histories ; movement patterns ; otolith chemistry ; random forest ; river networks ; water chemistry ; {REUNION}},
  booktitle = {},
  journal = {{E}cology of {F}reshwater {F}ish},
  volume = {27},
  numero = {3},
  pages = {834--846},
  ISSN = {0906-6691},
  year = {2018},
  DOI = {10.1111/eff.12396},
  URL = {https://www.documentation.ird.fr/hor/fdi:010073099},
}