Body mass and water economy in the South American olivaceous field mouse along a latitudinal gradient: Implications for climate change

► We studied geographic trends in body mass and water economy the olivaceous field mouse in Chile. ► Body size of the olivaceous mouse did not vary along a very long latitudinal gradient. ► We observed a better tolerance to water shortage in population from the xeric habitat. ► With increased desertification rodent would be able to show flexibility in water economy.