| macro- and microgeographic variation in metabolism and hormone correlates in big brown bats (eptesicus fuscus). | to better understand intraspecific variation in basal metabolic rate (bmr), we examined environmental, physiological, and/or cellular bases for residual variation in bmr in big brown bats, eptesicus fuscus. we measured bmr and plasma levels of thyroid hormone (t(3)) and leptin in bats captured in maternity colonies in eastern massachusetts (ma; northern population) and in alabama and georgia (alga; southern population) to assess macrogeographic (between- or among-population) and microgeographic ... | 2013 | 19758093 |