@article{fdi:010053825,
  title = {{C}apacity for water conservation in invasive ({G}erbillus nigeriae) and declining rodents ({T}aterillus pygargus and {T}aterillus gracilis) that exhibit climate-induced distribution changes in {S}enegal},
  author = {{T}hiam, {M}. and {A}tteynine, {S}. {A}. and {T}raore, {S}. and {D}uplantier, {J}ean-{M}arc and {M}aurel, {D}. and {S}icard, {B}runo},
  editor = {},
  language = {{ENG}},
  abstract = {{F}ollowing the southward shift of rainfall isolines in the {S}ahel at the end of the 1960s. {G}erbillus nigeriae appeared in northern {S}enegal in the mid-1990s, and two resident {G}erbillidae ({T}aterillus pygargus and {T}aterillus gracilis) subsequently declined. {W}e investigated the causal role of the capacity to conserve water in such climate-related shifts in the distribution of these {G}erbillidae by comparing the effects of a water-poor diet on the water-efflux rate ({W}-out) of freshly trapped adults pre-acclimatized to a water-rich diet. {D}uring the 12-day period of water restriction in all species, 30-50% of individuals became hyperactive and showed greater weight loss and higher {W}-out than the remaining inactive individuals. {S}uch emergence of migratory strategists within populations could accelerate the expansion of {G}. nigeriae. {O}n a water-poor diet, {T}. gracilis showed a lower capacity to conserve water (higher {W}-out) than {T}. pygargus and {G}. nigeriae, in both inactive ({W}-out = 44.5 +/- 1.8 vs 29.6 +/- 0.8 vs 27.4 +/- 0.7 ml kg(-0.82).day(-1), respectively) and hyperactive individuals ({W}-out = 60.4 +/- 1 vs 45.4 +/- 0.7 vs 44 +/- 0.8 ml kg(-0.82).day(-1), respectively). {W}e propose that the capacity to conserve water accounted for both expansion of {G}. nigeriae and decline of {T}. gracilis, whereas competition between {T}. pygargus and {G}. nigeriae could account for the decline of {T}. pygargus.},
  keywords = {{C}limate changes ; {D}evelopmental plasticity ; {I}nter-individual variability ; {P}opulation expansions ; {S}ahel},
  booktitle = {},
  journal = {{J}ournal of {A}rid {E}nvironments},
  volume = {75},
  numero = {11},
  pages = {998--1007},
  ISSN = {0140-1963},
  year = {2011},
  DOI = {10.1016/j.jaridenv.2011.04.029},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053825},
}