Comparison of photoperiodic influences on the seasonal changes in body weight and energy intake in the eastern chipmunk and the 13-lined ground squirrel.
D000818:Animals; D001835:Body Weight; D004734:Energy Metabolism; D008027:Light; D008297:Male; D010507:Periodicity; D012377:Rodentia / Q000502:physiology*; D012589:Sciuridae; D012621:Seasons