Download or read book Avian Anatomy Integument written by Alfred Martin Lucas and published by . This book was released on 1972 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Avian Anatomy Integument written by Alfred Martin Lucas and published by . This book was released on 1972 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: Descriptions and photographs of Plimoth Plantation, a museum re-creation of the original Pilgrim settlement, trace the history and way of life of the first Pilgrims. Includes a discussion of the origin and operation of the museum.

Download or read book Avian Anatomy Integument written by Alfred M. Lucas and published by . This book was released on 1972 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Growth of follicles and feathers, color of feathers and integument; Feather and apterial muscles; Microscopic structure of skin and derivatives; Techniques.

Download or read book Avian Anatomy Integument written by Alfred Martin Lucas and published by . This book was released on 1972 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Vertebrate Integument Volume 2 written by Theagarten Lingham-Soliar and published by Springer. This book was released on 2015-02-18 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emphasis in this volume is on the structure and functional design of the integument. The book starts with a brief introduction to some basic principles of physics (mechanics) including Newton’s Three Laws of Motion. These principles are subsequently used to interpret the problems animals encounter in motion. It is in only the last 40 or so years that we have begun to understand how important a role the integument plays in the locomotion of many marine vertebrates. This involves the crossed-fiber architecture, which was first discovered in a classic study on nemertean worms. As a design principle we see that the crossed-fiber architecture is ubiquitous in nature. Research on some of the most dynamic marine vertebrates of the oceans – tuna, dolphins and sharks, and the extinct Jurassic ichthyosaurs – shows precisely how the crossed-fiber architecture contributes to high-speed swimming and (in lamnid sharks) may even aid in energy conservation. However, this design principle is not restricted to animals in the marine biota but is also found as far afield as the dinosaurs and, most recently, has been revealed as a major part of the microstructure of the most complex derivative of the integument, the feather. We see that a variety of phylogenetically diverse vertebrates take to the air by using skin flaps to glide from tree to tree or to the ground, and present detailed descriptions of innovations developed in pursuit of improved gliding capabilities in both extinct and modern day gliders. But the vertebrate integument had even greater things in store, namely true or flapping flight. Pterosaurs were the first vertebrates to use the integument as a membrane in true flapping flight and these interesting extinct animals are discussed on the basis of past and cutting-edge research , most intriguingly with respect to the structure of the flight membrane. Bats, the only mammals that fly, also employ integumental flight membranes. Classic research on bat flight is reviewed and supplemented with the latest research, which shows the complexities of the wing beat cycle to be significantly different from that of birds, as revealed by particle image velocimetry. The book’s largest chapter is devoted to birds, given that they make up nearly half of the over 22,000 species of tetrapods. The flight apparatus of birds is unique in nature and is described in great detail, with innovative research highlighting the complexity of the flight structures, bird flight patterns, and behavior in a variety of species. This is complimented by new research on the brains of birds, which shows that they are more complex than previously thought. The feather made bird flight possible, and was itself made possible by β-keratin, contributing to what may be a unique biomechanical microstructure in nature, a topic discussed in some depth. A highly polarized subject concerns the origin of birds and of the feather. Alleged fossilized protofeathers (primal simple feathers) are considered on the basis of histological and taphonomic investigative studies in Chapter 6. Finally, in Chapter 7 we discuss the controversies associated with this field of research. Professor Theagarten Lingham-Soliar works at the Nelson Mandela Metropolitan University, Port Elizabeth and is an Honorary Professor of Life Sciences at the University of KwaZulu-Natal.

Download or read book Backyard Poultry Medicine and Surgery written by Cheryl B. Greenacre and published by John Wiley & Sons. This book was released on 2014-12-31 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Backyard Poultry Medicine and Surgery is a practical resource offering guidance on developing diagnostic and treatment plans for individual companion poultry or small flocks. Organized by body system to aid in developing a differential diagnosis list for common presenting signs, the book provides all the information clinicians need to effectively treat backyard poultry. Written by experts from both the commercial poultry field and the companion avian field, the book provides thorough coverage of both common and less common diseases of backyard chickens, ducks, and other poultry. The book begins with introductory chapters covering general information, an overview of US laws, and basic husbandry concerns, then moves into specific disease chapters organized by system. The book takes an individual medicine perspective throughout, with photographs, radiographs, and histopathological photomicrographs to illustrate principles and diseases. Backyard Poultry Medicine and Surgery is an invaluable guide to diseases and treatments for any practitioners treating backyard poultry.

Download or read book The Vertebrate IntegumentVolume 1 written by Theagarten Lingham-Soliar and published by Springer Science & Business Media. This book was released on 2014-02-18 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vertebrate integument arose about 450 million years ago as an ‘armour’ of dermal bony plates in small, jawless fish-like creatures, informally known as the ostracoderms. This book reviews the major changes that have occurred in the vertebrate integument from its beginnings to the present day. Critical questions concerning the origin, structure and functional biology of the bony integument are discussed and intrinsically linked to major steps in vertebrate evolution and phylogeny—the origin of jaws and the origin of teeth. The discussions include the origins of mineralization of major vertebrate skeletal components such as the dermatocranium, branchial arches and vertebral column. The advances that led to the origin of modern fishes and their phylogenetic development are reviewed and include the evolution of fins and replacement of the bony plates with several types of dermal scales. The evolution of reptiles saw a major transformation of the integument, with the epidermis becoming the protective outermost layer, from which the scales arose, while the dermis lay below it. The biological significance of the newly-evolved β-keratin in reptilian scales, among the toughest natural materials known, is discussed in the context of its major contribution to the great success of reptiles and to the evolution of feathers and avian flight. The dermis in many vertebrates is strengthened by layers of oppositely oriented cross-fibres, now firmly entrenched as a design principle of biomechanics. Throughout the book conventional ideas are discussed and a number of new hypotheses are presented in light of the latest developments. The long evolutionary history of vertebrates indicates that the significance of the Darwinian concept of “survival of the fittest” may be overstated, including in our own mammalian origins and that chance often plays a major role in evolutionary patterns. Extensive illustrations are included to support the verbal descriptions. Professor Theagarten Lingham-Soliar is in the Department of Life Sciences at the University of KwaZulu-Natal.

Download or read book Morphogenesis of Skin written by Sengel and published by CUP Archive. This book was released on 1976 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Available Publications of the United States Department of Agriculture written by United States. Department of Agriculture and published by . This book was released on 1973 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Available Publications of the United States Department of Agriculture written by United States. Dept. of Agriculture and published by . This book was released on 1973 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dellmann s Textbook of Veterinary Histology written by Jo Ann Eurell and published by John Wiley & Sons. This book was released on 2013-03-19 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: The leading veterinary histology text returns with a fully updated sixth edition. Written in a concise, easy-to-understand that's a pleasure to read, this new edition continues the student-friendly tradition originated by Dr. Dellman, presenting the basics of histology including cytology and microscopic anatomy. The Sixth Edition focuses on the most current knowledge of cell, tissue and organ structure and function. All information has been fully revised and updated by the authors, both experts in their fields. Written with first year veterinary students in mind, it is also an important resource for veterinarians, graduate students, and others who require information on animal tissue structure and function. Highlights of the Sixth Edition include: New images and line drawings have been added to enhance the student's understanding of concepts. Two-page insert contains full-color histology images. Comprehensive listings of suggested readings at the end of each chapter encourage further study. The text is organized by body region, allowing the presentation to emphasize comparative species information so students can better appreciate how species differ in regard to key structures. Whether you're a veterinary student or practicing professional, you should have this classic histology reference as part of your working library.

Download or read book Veterinary Nursing of Exotic Pets written by Simon J. Girling and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: From budgies and cockatiels to chipmunks and chinchillas, ourinterest in exotic pets has rocketed in recent years. With thehouse rabbit being the UK's third most commonly kept pet after thecat and dog, and sales in small mammals, reptiles and birdscontinuing to grow, exotic pets have now become a specialist areaof veterinary practice in their own right. Veterinary Nursing of Exotic Pets is the first book toaddress the need for a definitive reference book devoted entirelyto the principles and applications of nursing exotic species.Developed from a City and Guild's course, it not only covershusbandry, nutrition and handling, but also explores anatomy andchemical restraint, and provides an overview of diseases andtreatments.

Download or read book Avian Anatomy Integument written by Alfred Martin Lucas and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Homology Genes and Evolutionary Innovation written by Günter P. Wagner and published by Princeton University Press. This book was released on 2018-07-10 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: A major synthesis of homology, written by a top researcher in the field Homology—a similar trait shared by different species and derived from common ancestry, such as a seal's fin and a bird’s wing—is one of the most fundamental yet challenging concepts in evolutionary biology. This groundbreaking book provides the first mechanistically based theory of what homology is and how it arises in evolution. Günter Wagner, one of the preeminent researchers in the field, argues that homology, or character identity, can be explained through the historical continuity of character identity networks—that is, the gene regulatory networks that enable differential gene expression. He shows how character identity is independent of the form and function of the character itself because the same network can activate different effector genes and thus control the development of different shapes, sizes, and qualities of the character. Demonstrating how this theoretical model can provide a foundation for understanding the evolutionary origin of novel characters, Wagner applies it to the origin and evolution of specific systems, such as cell types; skin, hair, and feathers; limbs and digits; and flowers. The first major synthesis of homology to be published in decades, Homology, Genes, and Evolutionary Innovation reveals how a mechanistically based theory can serve as a unifying concept for any branch of science concerned with the structure and development of organisms, and how it can help explain major transitions in evolution and broad patterns of biological diversity.

Download or read book Outlines of Avian Anatomy written by Anthony Stuart King and published by Bailliere Tindall Limited. This book was released on 1975 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Avian anatomy written by Alfred M. Lucas and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ornithology written by Michael L. Morrison and published by Johns Hopkins University Press. This book was released on 2018-09-03 with total page 1017 pages. Available in PDF, EPUB and Kindle. Book excerpt: The essential text for ornithology courses, this book will leave students with a lifelong understanding and appreciation of the biology and ecology of birds. Aves, the birds, is the wildlife group that people most frequently encounter. With over 10,000 species worldwide, these animals are part of our everyday experience. They are also the focus of intense research, and their management and conservation is a subject of considerable effort throughout the world. But what are the defining attributes that make a bird a bird? Aimed at undergraduate and graduate students, Ornithology provides a solid modern foundation for understanding the life and development of birds. Written by renowned experts from around the globe, this comprehensive textbook draws on the latest research to create an innovative learning experience. Moving beyond bones, muscle, and feathers, it provides the core information needed to “build” the bird, linking anatomy and physiology with ecology and behavior. As it reviews the major orders of birds, the book highlights their wide diversity and critically evaluates ornithological concepts and theories. Incorporating brief biographies of leaders in the field, the text describes their contributions in the context of key historical events in bird science. Each chapter ends with a summary of the material covered, a discussion of potential management and conservation applications, and suggested study questions that will stimulate thought and discussion. Contributors: Peter Arcese, George E. Bentley, Lori A. Blanc, William M. Block, Alice Boyle, Leonard A. Brennan, Luke K. Butler, Zac Cheviron, Luis M. Chiappe, Melanie R. Colón, Caren B. Cooper, Robert J. Cooper, Jamie M. Cornelius, Carlos Martinez Del Rio, John Dumbacher, Shannon Farrell, Maureen Flannery, Geoffrey Geupel, Patricia Adair Gowaty, Thomas P. Hahn, Ashley M. Heers, Fritz Hertel, Geoffrey E. Hill, Matthew Johnson, Lukas F. Keller, Dylan C. Kesler, Pablo Sabat Kirkwood, John Klicka, Christopher A. Lepczyk, Ashley M. Long, Scott R. Loss, Graham R. Martin, John M. Marzluff, Susan B. McRae, Michael L. Morrison, Timothy J. O’Connell, Jen C. Owen, Marco Pavia, Jeffrey Podos, Lars Pomara, Jonathan F. Prather, Marco Restani, Alejandro Rico-Guevara, Amanda D. Rodewald, Vanya G. Rohwer, Matthias Starck, Michael W. Strohbach, S. Mažeika P. Sullivan, Diego Sustaita, Kerri T. Vierling, Gary Voelker, Margaret A. Voss, Jeff R. Walters, Paige S. Warren, Elisabeth B. Webb, Michael S. Webster, Eric M. Wood, Robert M. Zink, Benjamin Zuckerberg