| secondarily diurnal geckos return to cost of locomotion typical of diurnal lizards. | previous studies showed that nocturnal geckos evolved a low energetic cost of locomotion (cmin), which increases maximum aerobic speed and partially offsets the decrease in maximal oxygen consumption caused by activity at low nocturnal temperatures. because the advantage of a low cmin should apply at high diurnal temperatures as well as at low nocturnal temperatures, i hypothesized that cmin remained low in geckos that have secondarily evolved diurnality. i measured cmin in two secondarily diurn ... | 2003 | 10222328 |