@article{fdi:010077497,
  title = {{D}ams select individual morphology but do not modify upstream migration speed of tropical amphidromous gobies},
  author = {{L}agarde, {R}. and {B}orie, {G}. and {P}onton, {D}ominique},
  editor = {},
  language = {{ENG}},
  abstract = {{F}ish locomotor performance depends on inter-individual morphological differences and influences the response of populations to anthropogenic impacts. {A}mphidromous gobies, {S}icyopterus lagocephalus and {C}otylopus acutipinnis can climb up obstacles several metres high, after their arrival in rivers from the ocean. {A} previous study demonstrated that juveniles of {S}. lagocephalus performed better than {C}. acutipinnis when challenged with an artificial climbing ramp, and that individual morphology explained climbing performance for both species. {T}his present study was focused on the effects of two 10-m high dams on the individual morphological selection of these species. {W}e hypothesized that, compared with {C}. acutipinnis, (a) {S}. lagocephalus juveniles will reach the dams faster after they arrive in freshwater and (b) their morphology will play a lesser role in their capacity to climb up the dams. {A}natomical traits were measured for 186 and 201 {S}. lagocephalus and 179 and 221 {C}. acutipinnis captured downstream and upstream of the dams, respectively. {T}he time they spent in freshwater was estimated by examining the microstructures of their otoliths. {A}s expected, {S}. lagocephalus individuals reached the dams 10-20 days faster than {C}. acutipinnis, and their morphology upstream and downstream of the dams did not differ, in contrast to {C}. acutipinnis. {U}pstream of the dam, {C}. acutipinnis had a larger pelvic sucker than downstream, confirming experimental observations. {I}t suggests that juveniles of the cosmopolitan {S}. lagocephalus have more efficient upstream migration capacities than the endemic {C}. acutipinnis. {M}oreover, differences in individual morphologies above and below barriers appear efficient for quantifying their impact on upstream migration of amphidromous species.},
  keywords = {anthropogenic migration barriers ; {C}otylopus acutipinnis ; diadromy ; fishways ; locomotor performance ; river continuum ; {S}icyopterus lagocephalus ; tropical island ; {REUNION} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{R}iver {R}esearch and {A}pplications},
  volume = {36},
  numero = {1},
  pages = {57--67},
  ISSN = {1535-1459},
  year = {2020},
  DOI = {10.1002/rra.3541},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077497},
}