@article{fdi:010058932,
  title = {{L}ocal adaptation to altitude underlies divergent thermal physiology in tropical killifishes of the genus {A}phyosemion},
  author = {{M}c{K}enzie, {D}. {J}. and {E}stivales, {G}. and {S}vendsen, {J}. {C}. and {S}teffensen, {J}. {F}. and {A}gn{\`e}se, {J}ean-{F}ran{\c{c}}ois},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n watersheds of equatorial {W}est {A}frica, monophyletic groups of killifish species (genus {A}phyosemion) occur in discrete altitudinal ranges, low altitude species ({LA}, sea level to similar to 350 m) or high altitude species ({HA}, 350 to 900 m). {W}e investigated the hypothesis that local adaptation to altitude by the {LA} and {HA} species would be revealed as divergent effects of temperature on their physiological energetics. {T}wo species from each group (mass similar to 350 mg) were acclimated to 19, 25 and 28 degrees {C}, with 19 and 28 degrees {C} estimated to be outside the thermal envelope for {LA} or {HA}, respectively, in the wild. {W}ild-caught animals ({F}0 generation) were compared with animals raised in captivity at 25 degrees {C} ({F}1 generation) to investigate the contribution of adaptation versus plasticity. {T}emperature significantly increased routine metabolic rate in all groups and generations. {H}owever, {LA} and {HA} species differed in the effects of temperature on their ability to process a meal. {A}t 25 degrees {C}, the specific dynamic action ({SDA}) response was completed within 8 h in all groups, but acclimation to temperatures beyond the thermal envelope caused profound declines in {SDA} performance. {A}t 19 degrees {C}, the {LA} required similar to 14 h to complete the {SDA}, whereas the {HA} required only similar to 7 h. {T}he opposite effect was observed at 28 degrees {C}. {T}his effect was evident in both {F}0 and {F}1. {R}eaction norms for effects of temperature on {SDA} therefore revealed a trade-off, with superior performance at warmer temperatures by {LA} being associated with inferior performance at cooler temperatures, and vice-versa in {HA}. {T}he data indicate that divergent physiological responses to temperature in the {LA} and {HA} species reflect local adaptation to the thermal regime in their habitat, and that local adaptation to one thermal environment trades off against performance in another.},
  keywords = {{AFRIQUE} {DE} {L}'{OUEST}},
  booktitle = {},
  journal = {{P}los {O}ne},
  volume = {8},
  numero = {1},
  pages = {e54345},
  ISSN = {1932-6203},
  year = {2013},
  DOI = {10.1371/journal.pone.0054345},
  URL = {https://www.documentation.ird.fr/hor/fdi:010058932},
}