HW Chapter 8: Sleep and Biological Rhythms Name:__________________________________________ ENERGY CONSERVATION THEORY Fast-moving animals with high metabolic rates sleep more than those that burn calories more slowly, thereby conserving their energy. Given the table of animal steep durations, do you find any support for the Energy Conservation Theory? Consider in particular the following questions: A. Compare animals that are similar is size and activity. Do they seem to need the same amount of sleep? B. Compare human beings at different ages. How might age play a part in energy needs and sleep? C. Compare small animals with large animals. Do larger animals need to rest more to conserve energy? D. Compare animals that are herbivores (plant eaters) with those that are carnivores (meat eaters) or omnivores (anything eaters). Meat is a more concentrated food. Can carnivores sleep more? Species Brown Bat Giant Armadillo North American Opossum Python Owl Monkey Human (Infant) Tiger Squirrel Western Toad Ferret Three-toed Sloth Golden Hamster Platypus Lion Gerbil Rat Cat Species Average Total Sleep Time (% of 24 Hours) 82.9% 75.4% 75% 75% 70.8% 66.7% 65.8% 62% 60.8% 60.4% 60% 59.6% 58.3% 56.3% 54.4% 52.4% 50.6% Average Total Sleep Time (% of 24 Hours) Average Total Sleep Time (Hours/Day) 19.9 hr 18.1 hr 18 hr 18 hr 17.0 hr 16 hr 15.8 hr 14.9 hr 14.6 hr 14.5 hr 14.4 hr 14.3 hr 14.0 hr 13.5 hr 13.1 hr 12.6 hr 12.1 hr Average Total Sleep Time (Hours/Day) Mouse Rhesus Monkey Rabbit Jaguar Duck Dog Bottle-nosed Dolphin Star-nosed Mole Baboon European Hedgehog Squirrel Monkey Chimpanzee Guinea Pig Human (Adult) Pig Guppy (Fish) Gray Seal Human (Elderly) Goat Cow Asiatic Elephant Sheep African Elephant Donkey Horse Giraffe 50.3% 49.2% 47.5% 45% 45% 44.3% 43.3% 42.9% 42.9% 42.2% 41.3% 40.4% 39.2% 33.3% 32.6% 29.1% 25.8% 22.9% 22.1% 16.4% 16.4% 16% 13.8% 13.0% 12.0% 7.9% 12.1 hr 11.8 hr 11.4 hr 10.8 hr 10.8 hr 10.6 hr 10.4 hr 10.3 hr 10.3 hr 10.1 hr 9.9 hr 9.7 hr 9.4 hr 8 hr 7.8 hr 7 hr 6.2 hr 5.5 hr 5.3 hr 3.9 hr 3.9 hr 3.8 hr 3.3 hr 3.1 hr 2.9 hr 1.9 hr
