By John William Prothero
Regardless of an unbelievable a hundred million-fold diversity in grownup physique mass from bumblebee bat to blue whale, all mammals are shaped of a similar sorts of molecules, cells, tissues and organs and to an analogous total physique plan. A scaling technique investigates the foundations of mammal layout by means of interpreting the ways that mammals of various dimension and taxonomy are quantitatively related. This e-book provides an intensive reanalysis of scaling information amassed over 1 / 4 of a century, together with many hardly ever or never-cited assets. the result's an unheard of contribution to knowing scaling in mammals, addressing a uniquely broad diversity of mammal attributes and utilizing considerably better and extra conscientiously screened samples than in any past works. a useful source for all these drawn to the 'design' of mammals, this can be an awesome source for postgraduates and researchers in various fields from comparative body structure to ecology.
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Extra info for The Design of Mammals: A Scaling Approach
The above material leads to a preliminary discussion of possible relations between ontogenetic scaling (mostly in the human) and adult interspeciﬁc scaling. Ontogeny (Chapter 22) stands to explain the mechanisms accounting for adult interspeciﬁc scaling. A scaling model for repeating units, a topic usually ignored in scaling studies in mammals, is introduced. The chapter ends with a tentative classiﬁcation of reference slopes. These reference slopes reﬂect, in major part, invariance and dimensionality (lengths, surface areas).
Scaling studies are inherently quantitative: numbers are of the essence. Much of the present work is concerned not just with numbers, but also with what the various numbers derived from scaling studies entail in a biological context. ” We begin with time scales and then turn brieﬂy to physical scaling and a critique thereof. There follows a discussion of certain aspects of scaling, including scale effects, computation of best-ﬁt lines, and the numerical properties of power functions. Some implications of differences in slope are discussed.
The ideal measure of body size for scaling purposes would not be length, weight, or mass, but volume. The reason is that organisms can be considered, for scaling purposes, 41 42 Towards a standardized body weight table predominantly as chemical “machines,” for which surface area and volume are likely to be functionally the more signiﬁcant measures of size. Body volume can be exhaustively partitioned into component organ systems, organs and tissues, each of which is potentially of intrinsic meaning.
The Design of Mammals: A Scaling Approach by John William Prothero