BIOB34H3 Lecture Notes - Lecture 5: Basal Metabolic Rate, Thyroid, Munia
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Thyroid gland swells, and you get goiter: ex. Black-legged kittiwake: capture, acclimate, measure bmr, more thyroid hormones, higher bmr (correlation, ex. Spotted munia: measure bird bmr under many different conditions. Inject t4 increase bmr: thx remove thyroid glands, nothing to stimulate bmr, ex. mouse livers, liver is very active in protein synthesis. If you have 2 unrelated parameters, they are independent. Iso means the same to make linear, plot log-log plots: look at a(cid:454)es to e(cid:374)sure it"s reall(cid:455) a log-log the scaling exponent. As an animal gets plot in mammals gives a negative allometric relationship allometric scaling bigger, bmr increases at a low rate. No single answer, but there are hypotheses: negative allometric relationship between mr and body mass, 1) surface law, max rubner (1883) a(cid:374)i(cid:373)als (cid:449)o(cid:374)"t ha(cid:448)e mr e(cid:454)(cid:272)eedi(cid:374)g their sa. Invest in repair and preventing ros as well: 3) pharmacology, when administering drugs to animals, must consider size and body mass, 4) heart rate.
