Biology 3601A/B Lecture Notes - Lecture 2: Colossal Squid, Bee Hummingbird, Isometry
4 Jan 2019
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Animals come in a range of body sizes : rotifer: 0. 001g (10-4g, blue whale: 177 000 000g (108g) Birds come in a range of body sizes : bee hummingbird: 1. 8g, african ostrich:130 000g. Mammals comes in a range of body sizes : pygmy shrew: 2. 5g, blue whale: 177 000 000g. Invertebrates come in a range of body sizes : rootifer: 0. 0001g, colossal squid: 495 000g. Note: this individual was smaller than remains found inside sperm whales would suggest . Structural and functional consequences of changes in size or scale among otherwise similar organisms schmidt-nielsen. These differences in body size has biological consequences. Size imposes constraints e. g. the structure and physiology of ostrich is going to be different than a tiny bird. Isometry: proportions stay the same with changes in size: leg length: body length doesn"t change with size. If we plot body length vs. leg length, we get a slope of 1.
