title: Heart rate in spiders: influence of body size and foraging energetics.
abstract: Resting heart rates in 18 species of spiders as determined by a cool laser transillumination technique range from 9 to 125 beats per minute. Cardiac frequencies obtained in this fashion may readily serve as a measure of standard rates of metabolism. A spider's resting heart rate is a function of body size and of foraging energetics.
mesh_terms: D000818:Animals; D001835:Body Weight; D004734:Energy Metabolism; D005260:Female; D006339:Heart Rate; D013112:Spiders / Q000033:anatomy & histology / Q000378:metabolism / Q000502:physiology*