Download or read book Prolactin and Avian Clutch Size written by Calen Patrick Ryan and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Clutch size is a fundamental predictor of avian fitness, and has been widely studied from evolutionary and ecological perspectives. However, surprisingly little is known about the physiological mechanisms that integrate environmental and state dependant cues into individually variable responses in clutch size. The only formal mechanistic hypothesis for avian clutch-size determination predicts an anti-gonadal effect of prolactin (PRL) via the inhibition of luteinizing hormone (LH), and has become widely accepted despite little experimental support. I experimentally tested the PRL-based mechanistic model for clutch size determination in an avian model system, Taeniopygia guttata using two complementary approaches. The first involved the pharmacological manipulation of PRL, while the second entailed experimentally enlarging clutch size. Contrary to predictions based on the PRL-based mechanistic model, PRL, LH and clutch size were effectively uncoupled through experimental manipulation. These findings expose a serious gap in our understanding of the physiological mechanisms of clutch size, a key life history trait.
Download or read book Physiological Adaptations for Breeding in Birds written by Tony D. Williams and published by Princeton University Press. This book was released on 2012-08-05 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physiological Adaptations for Breeding in Birds is the most current and comprehensive account of research on avian reproduction. It develops two unique themes: the consideration of female avian reproductive physiology and ecology, and an emphasis on individual variation in life-history traits. Tony Williams investigates the physiological, metabolic, energetic, and hormonal mechanisms that underpin individual variation in the key female-specific reproductive traits and the trade-offs between these traits that determine variation in fitness. The core of the book deals with the avian reproductive cycle, from seasonal gonadal development, through egg laying and incubation, to chick rearing. Reproduction is considered in the context of the annual cycle and through an individual's entire life history. The book focuses on timing of breeding, clutch size, egg size and egg quality, and parental care. It also provides a primer on female reproductive physiology and considers trade-offs and carryover effects between reproduction and other life-history stages. In each chapter, Williams describes individual variation in the trait of interest and the evolutionary context for trait variation. He argues that there is only a rudimentary, and in some cases nonexistent, understanding of the physiological mechanisms that underpin individual variation in the major reproductive life-history traits, and that research efforts should refocus on these key unresolved problems by incorporating detailed physiological studies into existing long-term population studies, generating a new synthesis of physiology, ecology, and evolutionary biology.
Download or read book Sturkie s Avian Physiology written by Colin G. Scanes and published by Elsevier. This book was released on 2014-06-30 with total page 1055 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sturkie's Avian Physiology is the classic comprehensive single volume on the physiology of domestic as well as wild birds. The Sixth Edition is thoroughly revised and updated, and features several new chapters with entirely new content on such topics as migration, genomics and epigenetics. Chapters throughout have been greatly expanded due to the many recent advances in the field. The text also covers the physiology of flight, reproduction in both male and female birds, and the immunophysiology of birds. The Sixth Edition, like the earlier editions, is a must for anyone interested in comparative physiology, poultry science, veterinary medicine, and related fields. This volume establishes the standard for those who need the latest and best information on the physiology of birds. - Includes new chapters on endocrine disruptors, magnetoreception, genomics, proteomics, mitochondria, control of food intake, molting, stress, the avian endocrine system, bone, the metabolic demands of migration, behavior and control of body temperature - Features extensively revised chapters on the cardiovascular system, pancreatic hormones, respiration, pineal gland, pituitary gland, thyroid, adrenal gland, muscle, gastro-intestinal physiology, incubation, circadian rhythms, annual cycles, flight, the avian immune system, embryo physiology and control of calcium - Stands out as the only comprehensive, single volume devoted to bird physiology - Offers a full consideration of both blood and avian metabolism on the companion website (http://booksite.elsevier.com/ 9780124071605). Tables feature hematological and serum biochemical parameters together with circulating concentrations of glucose in more than 200 different species of wild birds
Download or read book Hormones and Reproduction of Vertebrates Volume 4 written by David O. Norris and published by Elsevier. This book was released on 2024-08-05 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hormones and Reproduction of Vertebrates, Volume 4: Birds is the fourth of five second-edition volumes representing a comprehensive and integrated overview of hormones and reproduction in fishes, amphibians, reptiles, birds, and mammals. The book includes coverage of endocrinology, neuroendocrinology, physiology, behavior, and anatomy of reptilian reproduction. It provides a broad treatment of the roles of pituitary, thyroid, adrenal, and gonadal hormones in all aspects of reproduction, as well as descriptions of major life history events. New to this edition is a concluding assessment of the effect of environmental influences on birds. Initial chapters in this book broadly examine sex determination, reproductive neuroendocrinology, stress, and hormonal regulation as it relates to male and female reproductive structure and function. Subsequent chapters examine hormones and reproduction of specific behaviors, including courtship, mating, parental care, and migration. The book concludes with an examination of endocrine disruption of reproduction in birds. Hormones and Reproduction of Vertebrates, Volume 4: Birds is designed to provide a readable, coordinated description of reproductive basics in birds, as well as an introduction to the latest trends in reproductive research and a presentation of our understanding of reproductive events gained over the past decade. It may serve as a stand-alone reference for researchers and practitioners in the field of ornithology or as one of five coordinated references aligned to provide topical treatment across vertebrate taxa for researchers, practitioners, and students focused on vertebrate endocrinology. - Covers endocrinology, neuroendocrinology, physiology, behavior, and anatomy of avian reproduction - Includes pituitary, thyroid, adrenal, and gonadal hormones - Focuses on specific behaviors, including courtship, mating, parental care, and migration - Provides new coverage on environmental influences on birds
Download or read book The Effect of Clutch Size on Prolactin Testosterone and Incubation Persistence in Male Wilson s Phalaropes Phalaropus Tricolor written by David J. Delehanty and published by . This book was released on 1991 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Some Recent Findings in the Inhibition of Avian Reproductivity written by Roy D. Crawford and published by . This book was released on 1962 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: A seminar was conducted in 1961 by the Department of Poultry Science, University of Massachusetts, and the Massachusetts Cooperative Wildlife Research Unit, supported by the University of Massachusetts, the Massachusetts Division of Fisheries and Game, the United States Fish and Wildlife Service, and the Wildlife Management Institute.
Download or read book Biology of Birds written by D.R. Khanna and published by Discovery Publishing House. This book was released on 2005 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Introduction, Classifying Birds, Birds Through the Ages, Habitats and Adaptations, Bird Behaviour, Reproductive Organs, Breeding and Nesting, Structure of Egg, Fertilization and Early Development, Foetal Membranes, Advanced Development in Birds, Migration in Birds, Selective Studies.
Download or read book Avian Energetics and Nutritional Ecology written by C. Carey and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: A symposium held in 1973 chaired and organized by William R. Dawson was the first major attempt to summarize and synthesize the existing information in the then emerging field of avian energetics. The symposium featured papers by James R. King, William A. Calder III, Vance A. Tucker, and Robert E. Ricklefs and com mentaries by George A. Bartholomew, S. Charles Kendeigh, and Eugene P. Odum. The proceedings of the symposium, Avian Energetics (Paynter 1974), played a critical role in stimulating interest and research in the field of avian energetics. Some twenty-odd years later, we are making another attempt to summarize the information in the field of avian energetics. Some obvious differences exist be tween its predecessor and this volume. Numerous improvements in methodology, such as the use of doubly labeled water to estimate metabolism in free-living birds, now allow researchers to ask questions that could not be addressed previ ously. Second, consideration of nutrition is now inseparable from that of energet ics. This merger is necessary not only because food intake is the source of both en ergy and nutrients but also because one or more nutrients, rather than energy, can be limiting for a given species in a particular instance. Finally, the study of ener getics and nutritional ecology, particularly in birds and mammals, has grown so dramatically that a single volume can now only partially cover the range of possi ble topics and can catalogue only a sampling of all the studies on the subject.
Download or read book Progress in Avian Osmoregulation written by Leeds Philosophical and Literary Society and published by Leeds [England] : Leeds Philosophical and Literary Society. This book was released on 1989 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hormones and Reproduction of Vertebrates Volume 4 written by David Norris and published by Academic Press. This book was released on 2011-05-04 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series of volumes represents a comprehensive and integrated treatment of reproduction in vertebrates from fishes of all sorts through mammals. It is designed to provide a readable, coordinated description of reproductive basics in each group of vertebrates as well as an introduction to the latest trends in reproductive research and our understanding of reproductive events. Whereas each chapter and each volume is intended to stand alone as a review of that topic or vertebrate group, respectively, the volumes are prepared so as to provide a thorough topical treatment across the vertebrates. Terminology has been standardized across the volumes to reduce confusion where multiple names exist in the literature, and a comprehensive glossary of these terms and their alternative names is provided. A complete, essential and up to date reference for research scientists working on vertebrate hormones and reproduction - and on animlals as models in human reproductive research Covers the endocrinology, neuroendocrinology, physiology, behaviour and anatomy of vertebrate reproduction Structured coverage of the major themes for all five vertebrate groups allows a consistent treatment for all Special chapters elaborate on features specific to individual vertebrate groups and to comparative aspects, similarities and differences between them
Download or read book Advances in the Study of Behavior written by H. Jane Brockmann and published by Academic Press. This book was released on 2011-07-29 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in the Study of Behavior was initiated over 40 years ago to serve the increasing number of scientists engaged in the study of animal behavior. That number is still expanding. This volume makes another important "contribution to the development of the field" by presenting theoretical ideas and research to those studying animal behavior and to their colleagues in neighboring fields. Advances in the Study of Behavior is now available online at ScienceDirect — full-text online from volume 30 onward.
Download or read book Biology of Breeding Poultry written by Paul M. Hocking and published by CABI. This book was released on 2009 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the biological science and background to breeding meat poultry, specifically broiler, turkey and duck. These commercial birds have been changed by genetic selection to such an extent that they are substantially different from traditional breeds and laying hens. Covering science, management and husbandry systems, this book is an essential reference for researchers and students in animal science, as well as technical staff of breeding companies and poultry meat producers. Part of the Poultry Science Symposium Series.
Download or read book Current Ornithology written by D.M. Power and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Volume 12, eminent international ornithologists further elucidate endocrinological correlates of mating strategies and hormones and reproductive behavior; assess the value of the ''brood reduction hypothesis'' in explaining ''the paradox of hatching asynchrony''; and explore the validity and sensitivity of growth bands in feathers as an indication of nutritional condition and the use of feather banding in studying growth. Chapters are well supported with charts, maps, schematic diagrams, and photographs. Current Ornithology is the only English-language publication currently devoted exclusively to extensive reviews and synthesis of topics pertaining to all aspects of the biology of birds. Chapters fall under such diverse rubrics as ecology, evolution, behavior, phylogeny, behavioral ecology, anatomy and physiology, and conservation biology. All authors are leading authorities on their subjects, and each chapter is refereed by experts in the topics covered. Although all chapters focus primarily on birds, some topics, such as the social cognition of birds as compared to primates (Volume 13), have significant application to disciplines outside of ornithology. Current Ornithology aims to provide an accessible, up-to-date, accurate source of data and to contribute to conceptual generalization and unification across the biological sciences.
Download or read book Book of Birds written by John Faaborg and published by Texas A&M University Press. This book was released on 2020-11-11 with total page 781 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Book of Birds: Introduction to Ornithology, John Faaborg, renowned expert on avian ecology and conservation, brings a fresh and accessible sensibility to the study of ornithology. In this beautifully illustrated volume, Faaborg’s approachable writing style will engage students and birders alike while introducing them to the study of the evolution, taxonomy, anatomy, physiology, diversity, and behavior of birds. With its unique focus on ecology, the text emphasizes birds’ relationships with the environment and other species while showing the amazing diversity of avian life. Faaborg pays special attention to the roles that competition, community structure, and reproductive behavior play in the astonishingly varied and interesting lives of birds seen around the world. He discusses variations in anatomy, morphology, and behavior; explains why such vast diversity exists; and explores the ways in which different birds can share the same spaces. Artist Claire Faaborg brings the science behind this diversity to life through her unique, hand-drawn artwork throughout the book. Combining vibrant visuals and knowledgeable insights, Book of Birds offers readers a firm foundation in the field of ornithology and an invaluable resource for understanding birds from an ecological and evolutionary perspective.
Download or read book Nests Eggs and Incubation written by Denis Charles Deeming and published by . This book was released on 2015 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nests, Eggs, and Incubation brings together a global team of leading authorities to provide a comprehensive overview of the fascinating and diverse field of avian reproduction. Starting with a new assessment of the evolution of avian reproductive biology in light of recent research, the book goes on to cover four broad areas: the nest, the egg, incubation, and the study of avian reproduction. New research on nest structures, egg traits, and life history is incorporated, whilst contemporary methodologies such as self-contained temperature probes and citizen science are also discussed. Applied chapters describe how biological knowledge can be applied to challenges such as urbanisation and climate change. The book concludes by suggesting priorities for future research. This book builds upon the foundations laid down by Charles Deeming's 2002 work Avian Incubation (available for readers of this book to access online for free), much of which remains relevant today. Read in conjunction with this previous volume, it provides an up-to-date and thorough review of egg biology, nest function, and incubation behaviour, which will be an essential resource for students of avian biology, as well as both professional and amateur ornithologists working in the field of avian reproduction.
Download or read book Fundamentals of Comparative Vertebrate Endocrinology written by I. Chester-Jones and published by Springer Science & Business Media. This book was released on 2013-12-14 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endocrinology, as a discipline, was a late arrival in the corpus of established subjects. Its growth in recent years has been prodigious, extending from mor phology to molecular levels. Most of the major endocrine glands were noted by the early anatomists, although the adrenal glands were not described until 1563 by Bartholomaeus Eustachius (1520-1574). On the other hand, elucidation of the function of these glands was extremely slow. Key work by A. A. Berthold (1849), although overlooked at the time, showed that comb atrophy in castrated fowl was prevented by testis transplantation. The idea that glands produced substances reach ing the bloodstream directly and not via excretory ducts stemmed from Claude Bernard, who first used the term internal secretion in 1855. The clinical observa tions of Thomas Addison at Guy's Hospital-published as a monograph in 1855 entitled The Constitutional and Local Effects of Disease of the Suprarenal Capsules -were seminal. However, the stimulus of this early research did not bring imme diate widespread further investigations. Upon the discovery of secretin in 1902, Bayliss and Starling considered the term "internal secretion" to be clumsy, and the term "hormone" was coined (from OQ[!UW-1 excite or arouse) and it was first used by Starling in his Croonian of 1905.
Download or read book Hormones Brain and Behavior Online written by and published by Academic Press. This book was released on 2002-06-18 with total page 5944 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hormones, Brain, and Behavior, Second Edition is a comprehensive work discussing the effect of hormones on the brain and, subsequently, behavior. This major reference work has 109 chapters covering a broad range of topics with an extensive discussion of the effects of hormones on insects, fish, amphibians, birds, rodents, and humans. To truly understand all aspects of our behavior, we must take every influence (including the hormonal influences) into consideration. Donald Pfaff and a number of well-qualified editors examine and discuss how we are influenced by hormonal factors, offering insight, and information on the lives of a variety of species. Hormones, Brain, and Behavior offers the reader comprehensive coverage of growing field of research, with a state-of-the-art overview of hormonally-mediated behaviors. This reference provides unique treatment of all major vertebrate and invertebrate model systems with excellent opportunities for relating behavior to molecular genetics. The topics cover an unusual breadth (from molecules to ecophysiology), ranging from basic science to clinical research, making this reference of interest to a broad range of scientists in a variety of fields. Available online exclusively via ScienceDirect. A limited edition print version is also available. Comprehensive coverage of a growing field of research Unique treatment of all major vertebrate and invertebrate model systems with excellent opportunites for relating behavior to molecular genetics Covers an unusual breadth ranging from molecules to ecophysiology, and from basic science to clinical research
