@article{fdi:010068687,
  title = {{T}rans-{A}mazonian natal homing in giant catfish},
  author = {{D}uponchelle, {F}abrice and {P}ouilly, {M}arc and {P}echeyran, {C}. and {H}auser, {M}. and {R}enno, {J}ean-{F}ran{\c{c}}ois and {P}anfili, {J}acques and {D}arnaude, {A}. {M}. and {G}arcia-{V}asquez, {A}. and {C}arvajal-{V}allejos, {F}. and {G}arcia-{D}avila, {C}. and {D}oria, {C}. and {B}erail, {S}. and {D}onard, {A}. and {S}ondag, {F}rancis and {S}antos, {R}. {V}. and {N}unez {R}odriguez, {J}esus and {P}oint, {D}avid and {L}abonne, {M}aylis and {B}aras, {E}tienne},
  editor = {},
  language = {{ENG}},
  abstract = {1. {K}nowledge of fish migration is a prerequisite to sustainable fisheries management and preservation, especially in large international river basins. {I}n particular, understanding whether a migratory lifestyle is compulsory or facultative, and whether adults home to their natal geographic area is paramount to fully appraise disruptions of longitudinal connectivity resulting from damming. 2. {I}n the {A}mazon, the large migratory catfishes of the {B}rachyplatystoma genus are apex predators of considerable interest for fisheries. {T}hey are believed to use the entire length of the basin to perform their life cycle, with hypothesized homing behaviours. {H}ere, we tested these hypotheses, using the emblematic {B}. rousseauxii as a model species. 3. {W}e sampled adults close to major breeding areas in the {A}mazon basin (upper {M}adeira and upper {A}mazonas) and assessed their lifetime movements by measuring variations in {S}r-87/{S}r-86 along transverse sections of their otoliths (ear stones) using laser ablation multicollector mass spectrometry ({LA}-{MC}-{ICPMS}). 4. {W}e demonstrate that larvae migrate downstream from the {A}ndean piedmont to the lower {A}mazon, where they grow over a protracted period before migrating upstream as adults. {C}ontrary to prevailing inferences, not all fish spend their nursery stages in the {A}mazon estuary,. {B}y contrast, the passage in the lower or central {A}mazon seems an obligate part of the life cycle. {W}e further evidence that most adults home to their natal geographic area within the {M}adeira sub-basin. {S}uch long-distance natal homing is exceptional in purely freshwater fishes. 5. {S}ynthesis and applications. {B}y using otolith microchemistry, we were able to demonstrate a seemingly compulsory basin-wide migratory life cycle of large {A}mazonian catfishes. {T}his makes them the organisms performing the longest migrations ( >8000 km) in fresh waters. {T}his exceptional life history is already jeopardized by two dams recently built in the {M}adeira {R}iver, which block a major migration route and access to a substantial part of their spawning grounds. {M}ajor impacts can be anticipated from the current and forthcoming hydroelectric development in the {A}mazon basin, not only on the populations and fisheries of this apex predator, but also on {A}mazonian food webs through trophic cascades.},
  keywords = {{S}r-87/{S}r-86 ratios ; {A}mazon ; anthropogenic activities ; {B}rachyplatystoma spp. ; freshwater fish ; giant catfish ; hydroelectric dams ; migration ; otoliths ; {PEROU} ; {BRESIL} ; {COLOMBIE} ; {BOLIVIE} ; {EQUATEUR} ; {AMAZONIE} ; {ANDES} ; {AMAZONE} {BASSIN}},
  booktitle = {},
  journal = {{J}ournal of {A}pplied {E}cology},
  volume = {53},
  numero = {5},
  pages = {1511--1520},
  ISSN = {0021-8901},
  year = {2016},
  DOI = {10.1111/1365-2664.12665},
  URL = {https://www.documentation.ird.fr/hor/fdi:010068687},
}