A Record of the Body Weight and Certain Organ and Gland Weights of 3690 Animals PDF Download
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Author: George Crile
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 90
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Book Description
Author: George Crile
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 90
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Book Description
Author: John William Prothero
Publisher: Cambridge University Press
ISBN: 1316369013
Category : Science
Languages : en
Pages : 387
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Book Description
Despite an astonishing 100 million-fold range in adult body mass from bumblebee bat to blue whale, all mammals are formed of the same kinds of molecules, cells, tissues and organs and to the same overall body plan. A scaling approach investigates the principles of mammal design by examining the ways in which mammals of diverse size and taxonomy are quantitatively comparable. This book presents an extensive reanalysis of scaling data collected over a quarter of a century, including many rarely or never-cited sources. The result is an unparalleled contribution to understanding scaling in mammals, addressing a uniquely extensive range of mammal attributes and using substantially larger and more rigorously screened samples than in any prior works. An invaluable resource for all those interested in the 'design' of mammals, this is an ideal resource for postgraduates and researchers in a range of fields from comparative physiology to ecology.
Author: Stephen Shennan
Publisher: Routledge
ISBN: 1134814496
Category : Education
Languages : en
Pages : 428
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Book Description
Archaeologists and biological anthroplogists set out their methods for reconstructing the social systems and cultural traditions of our ancestors; an essential introduction to the subject for advanced undergraduates and researchers.
Author: Wendy L. Martinez
Publisher: CRC Press
ISBN: 0203483375
Category : Business & Economics
Languages : en
Pages : 430
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Book Description
Exploratory data analysis (EDA) was conceived at a time when computers were not widely used, and thus computational ability was rather limited. As computational sophistication has increased, EDA has become an even more powerful process for visualizing and summarizing data before making model assumptions to generate hypotheses, encompassing larger a
Author: Alan Feduccia
Publisher: Yale University Press
ISBN: 9780300078619
Category : Nature
Languages : en
Pages : 490
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Book Description
An exploration of all that is known about the origin of birds and of avian flight. It draws on fossil evidence and studies of the structure and biochemistry of living birds to present knowledge and data on avian evolution and to propose a new model of this evolutionary process.
Author: Knut Schmidt-Nielsen
Publisher: Cambridge University Press
ISBN: 110739287X
Category : Science
Languages : en
Pages : 260
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Book Description
This book is about the importance of animal size. We tend to think of animal function in chemical terms and talk of water, salts, proteins, enzymes, oxygen, energy, and so on. We should not forget, however, that physical laws are equally important, for they determine rates of diffusion and heat transfer, transfer of force and momentum, the strength of structures, the dynamics of locomotion, and other aspects of the functioning of animal bodies. Physical laws provide possibilities and opportunities for an organism, yet they also impose constraints, setting limits to what is physically possible. This book aims to give an understanding of these rules because of their profound implications when we deal with animals of widely different size and scale. The reader will find that the book raises many questions. Remarkable and puzzling information makes it read a little like a detective story, but the last chapter, instead of giving the final solution, neither answers all questions nor provides one great unifying principle.
Author: Avril Woodhead
Publisher: Springer Science & Business Media
ISBN: 1461319390
Category : Medical
Languages : en
Pages : 352
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Book Description
The analysis of intra-group correlations between LS and BW at representative intervals yields no consistent support for the hypothesis that lower BW is associated with longer LS. Indeed, among male Wistar rats and C57BL/6J and A/J mice followed since weaning on AL diets, the data suggested that relatively higher BW across the adult LS was generally associated with longer life. Even when the diet was restricted by EOD or RES regimens, this pattern of positive correlations between LS and BW persisted for the C57BL/6J and A/J strains when relative ages were analyzed. However, when BW at absolute ages were correlated with LS, support for the positive relationship between BW and LS was not as forthcoming. When AL groups were assessed beginning at later ages (> 10 months), the pattern of positive correlations was very evident for the Wistar rats--heavier rats tended to liver longer. This pattern was also evident among AL-fed C57BL/6J mice followed since 6 months, but was lost in the 10-month group in this strain. Among A/J mice on AL diets, the pattern became somewhat negative when followed at 6 and 10 months of age. However, among both C57BL/6J and A/J mice placed on EOD diets at 6 and 10 months of age, the pattern clearly tended toward the positive.
Author: William J. Jungers
Publisher: Springer Science & Business Media
ISBN: 1489936475
Category : Science
Languages : en
Pages : 492
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Book Description
In very general terms, "scaling" can be defined as the structural and func tional consequences of differences in size (or scale) among organisms of more or less similar design. Interest in certain aspects of body size and scaling in primate biology (e. g. , relative brain size) dates to the turn of the century, and scientific debate and dialogue on numerous aspects of this general subject have continued to be a primary concern of primatologists, physical an thropologists, and other vertebrate biologists up to the present. Indeed, the intensity and scope of such research on primates have grown enormously in the past decade or so. Information continues to accumulate rapidly from many different sources, and the task of synthesizing the available data and theories on any given topic is becoming increasingly formidable. In addition to the formal exchange of new ideas and information among scientific experts in specific areas of scaling research, two of the major goals of this volume are an assessment of our progress toward understanding various size-related phe nomena in primates and the identification of future prospects for continuing advances in this realm. Although the subject matter and specific details of the issues considered in the 20 chapters that follow are very diversified, all topics share the same fundamental and unifying biological theme: body size variation in primates and its implications for behavior and ecology, anatomy and physiology, and evolution.
Author:
Publisher:
ISBN:
Category : Livestock
Languages : en
Pages : 1004
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Book Description
Author: Arthur M. Greenhall
Publisher: CRC Press
ISBN: 1351083368
Category : Medical
Languages : en
Pages : 262
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Book Description
A major problem with vampire bats is that whatever information exists is scattered throughout the literature or is not recorded. There are some excellent books on the ecology and biology of bats with very little on vampire bats. This volume fills that gap to provide an in-depth presentation of these unique animals.
