Download or read book Sibling Rivalry in Black legged Kittiwakes Rissa Tridactyla written by Adriana Vallarino Moncada and published by . This book was released on 2008 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chicks of several species compete with their siblings for parental provisioning of resources and care. This competition is mainly manifested by begging or food hoarding and in only few species, as in the black-legged kittiwake (Rissa tridactyla) direct aggression between the offspring is present. It has been proposed that the degree of asymmetries between the members of a brood influence the severity and outcome of this conflict. Several inequalities between the offspring have been identified (e.g. age, size, egg quality). First- hatched chicks (A) are older, larger and hatch from a different quality egg and size than second- hatched chicks (B). These inequalities provide different advantages to the chicks within a brood but their influence in sibling rivalry have not been widely tested. In the present thesis egg components of A and B eggs were analysed, comparisons of behaviour, survival and growth of chicks in two different years were made and egg size and quality were experimentally manipulated in order to test their importance in the sibling rivarly outcome of the black-legged kittiwake. In chapter II egg composition analyses of A- and B- eggs within a clutch were made. It was found that mothers allocated more carotenoids and less testosterone to A- eggs, while corticosterone, lipid and protein content did not differ, although A- eggs were 4% larger than B- eggs. In chapter III comparisons of behaviour, growth and survival between two environmentally different years were made. 2004 was a year with poor quality food whilst 2005 was a year with good food quality. The majority of second-hatched chicks in 2004 died before reaching 10 days of age and were all dead before 15 days while in 2005, more than 80% of second-hatched chicks fledged. Same behaviours were performed by A and B chicks in both years but the behavioural patterns did: aggression increased with age in 2004 while begging and feeding decreased in A and B chicks; these behaviours did not change with age in 2005. In chapter IV the influence of egg size on sibling rivalry was experimentally tested by eliminating age and egg quality differences within a brood and manipulating only the egg size differences. Comparisons of survival, growth and behaviour were made between experimental and control broods in which all the natural asymmetries were present. Differences in egg size determined which chick became dominant but these differences did not change the brood behaviour. Furthermore, experimental broods showed very different behaviour from control broods and the frequency of aggression was different between experimental broods formed by A- or B- eggs. In order to test if eggs are adapted for their hatching position, in chapter V an experimental manipulation of the brood composition was carried out and one of the clutch eggs' was swapped to make it hatch in a different position from the one it was made to hatch. The natural asymmetries in age and egg size were maintained. Broods with two first-laid eggs were less aggressive than control broods and than broods with two second-laid eggs. If A- and B- chicks are specifically made for their hatching position, their stress response should differ when they were artificially made to hatch on the same position and exposed to a stressor. This was tested on chapter VI and it was found that second hatched chicks from A- and B eggs did not differ on their stress response when facing a handling-stress protocol. On each year, natural broods fledged in higher proportion than experimental ones, which indicates that asymmetries within a brood are adaptive. It seems that eliminating within brood asymmetries is costly for the parents and perhaps these differences are optimal for maintaining a high efficiency index for the parents in terms of the amount of investment and the number of fledged chicks. Thus apparently, the main asymmetry influencing sibling rivalry is the difference in age of the offspring caused by hatching asynchronously.
Download or read book Sibling Rivalry in Black legged Kittiwakes written by Adriana Vallarino and published by . This book was released on 2009-11 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: In some birds a direct competition between siblings occur. Several differences within clutches and broods influence this competence. The main asynchronies are present in egg components, egg size and age. These differences were studied and experimentally manipulated to investigate their influence on sibling rivalry. Kittiwake mothers lay mainly two eggs asynchronously provoking chicks to hatch with a difference of 12 to 24 hrs. This difference in hours is enough to favour first hatched siblings in terms of age and size. When food is not enough, first hatched chicks will aggressively expel their siblings from the nest before 2 weeks of age. On the other hand, hormone differences between first and second laid eggs that favour second hatched chicks were found. These hormonal differences make second hatched more competitive and able to cope with an aggressive and older sibling. Survival results from the experimental manipulations of brood composition in the outcome of sibling rivalry are surprisingly contra intuitive. It seems that the asynchronies within a kittiwake brood are present to maintain an equilibrium in order to favour the maximum fitness of siblings and parents.
Download or read book The Kittiwake written by John Coulson and published by A&C Black. This book was released on 2011-09-19 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative overview of the biology of the Kittiwake, Rissa tridactyla. Returning to its breeding sites in the spring after a winter spent far out at sea, the Kittiwake is a familiar sight around the coasts of Britain and Europe. A pale, medium-sized gull with a 'gentle' expression and bright yellow bill, the Kittiwake has been the subject of behavioural research since the late 1950s - one of the longest running studies in the world. In this Poyser Monograph, John Coulson summarises these decades of research, revealing amazing insights into the life of these gulls, with wider implications for the behavioural ecology of all colonial birds. There are sections on life at sea, nest-site selection, breeding biology, feeding ecology, colony dynamics, moult, survivorship and conservation. This book is essential for academics working on colonial species, and is also of great interest to birders who want to learn more about these elegant cliff-dwelling birds.
Download or read book On Sex ratio and Sibling Competition written by Thomas Merkling and published by . This book was released on 2013 with total page 197 pages. Available in PDF, EPUB and Kindle. Book excerpt: During a breeding event, parents face several decisions that may impact their fitness. In this thesis, I have been interested in sex-ratio and sibling competition patterns in the black-legged kittiwake (Rissa tridactyla). First, I showed that parents in poorer condition overproduced daughters, which seems to be due to their lower reproductive cost and, possibly, to their higher fitness return for parents as compared to sons. Then, my results suggested that the natural magnitude of hatching asynchrony minimised the costs for parents and younger siblings, while older siblings seemed to be stressed by their dominant position. Finally, mothers favoured their younger chick's competitiveness only when in conflict over brood reduction with their older chick. This thesis thus highlighted some means through which parents could maximise benefits or reduce costs associated with their reproduction.
Download or read book Long term Ecological Change in the Northern Gulf of Alaska written by R.B. Spies and published by Elsevier. This book was released on 2006-12-12 with total page 609 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive text is a major synthesis on ecological change in the Gulf of Alaska. It encompasses the structural and annual changes, forces of change, long-ecological changes in the atmosphere and ocean, plankton, fish, birds and mammals, and the effects of the 1989 Exxon Valdez Oil Spill. With 5 major sections, Long-term Ecological Change in the Northern Gulf of Alaska first describes the physical features, the atmosphere and physical oceanography, the annual production cycle, the forage base for higher animals and trophic transfer, and the adaptations for survival in this changing environment for 9 portal species. Then, the major forces of change are introduced: climate, geophysics, fisheries and harvesting, species interactions, disease and contaminants. Next, the long-term records of change in physical factors and biological populations are presented, as well as the potential reasons for the biological changes. Following is the history of the Exxon Valdez oil spill and its long-term effects. And, finally, the emergent properties of the ecosystem are discussed and an attempt is made to weigh the importance of the major forcing factors in terms of their temporal and spatial scales of influence.* Examines important data on long-term change in the ecosystem and the forcing factors that are responsible for it * Provides an account of the 1989 Exxon Valdez oil spill with emphasis on the long-term effects * Describes the effects of climate change, geophysical change, species interactions, harvesting, disease, the 1989 oil spill, and marine contaminants on key populations of marine organisms
Download or read book The Evolution of Parental Care written by Nick J. Royle and published by Oxford University Press. This book was released on 2012-08-09 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Parental care includes a wide variety of traits that enhance offspring development and survival. This novel book provides a fresh perspective on the current state of the study of the evolution of parental care, written by some of the top researchers in the field, and taking a broad taxonomic approach.
Download or read book The Oxford Handbook of Evolutionary Perspectives on Violence Homicide and War written by Todd K. Shackelford and published by Oxford University Press, USA. This book was released on 2012-08-23 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume synthesizes the theoretical and empirical work of leading scholars in the evolutionary sciences to produce an extensive and authoritative review of this literature.
Download or read book Advances in Child Development and Behavior written by Janette B. Benson and published by Academic Press. This book was released on 2011-07-22 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 40 of the Advances in Child Development and Behavior series includes 10 chapters that highlight some of the most recent research in the area. A wide array of topics are discussed in detail, including Perspectives on Attachment and Social Cognition Across Generations; Developmental Perspectives on Vulnerability to Non-Suicidal Self-Injury in Youth; Development of Future Thinking, Planning, and Prospective Memory; and Family Relationships and Children's Stress Responses. Each chapter provides in-depth discussions and this volume serves as an invaluable resource for Developmental or educational psychology researchers, scholars, and students. 10 chapters that highlight some of the most recent research in the area A wide array of topics are discussed in detail
Download or read book The Evolution of Begging written by J. Wright and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Begging by nestling birds has become the model system for investigating evolutionary conflicts of interest within families and their theoretical resolution provided by honest signals of offspring need. In response to the recent explosions of scientific papers on the revolution of begging; we have brought together twenty-four original contributions from major researchers in all areas of this dynamic field. Organised into six sections: I: Theoretical approaches; II: Begging as a signal; III: Nestling physiology; IV: Sibling competition; V: Brood parasitism; and VI: Statistical approaches; this book is primarily aimed at research scientists and those at the graduate student level. For the first time, the theoretical and empirical literature on begging is fully reviewed. New ideas and data are also presented from a wide range of natural systems, and each chapter ends with suggestions for future study.
Download or read book Advances in the Study of Behavior written by and published by Elsevier. This book was released on 2001-04-02 with total page 335 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in the Study of Behavior, Volume 30 continues to serve scientists across a wide spectrum of disciplines. Focusing on new theories and research developments with respect to behavioral ecology, evolutionary biology, and comparative psychology, these volumes foster cooperation and communications in these dense fields. The aim of Advances in the Study of Behavior remains as it has been since the series began: to serve the increasing number of scientists who are engaged in the study of animal behavior by presenting their theoretical ideas and research to their colleagues and to those in neighboring fields. We hope that the series will continue its "contribution to the development of the field", as its intended role was phrased in the Preface to the first volume in 1965. Since that time, traditional areas of animal behavior have achieved new vigor by the links they have formed with related fields and by the closer relationship that now exists between those studying animal and human subjects.
Download or read book Infanticide written by Glenn Hausfater and published by Routledge. This book was released on 2017-07-12 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent field studies of a variety of mammalian species reveal a surprisingly high frequency of infanticide - the killing of unweaned or otherwise maternally dependent offspring. Similarly, studies of birds, fish, amphibians, and invertebrates demonstrate egg and larval mortality in these species, a phenomenon directly analogous to infanticide in mammals. In this collection, Hausfater and Hrdy draw together work on animal and human infanticide and place these studies in a broad evolutionary and comparative perspective.Infanticide presents the theoretical background and taxonomic distribution of infanticide, infanticide in nonhuman primates, infanticide in rodents, and infanticide in humans. It examines closely sex allocation and sex ratio theory, surveys the phylogeny of mammalian interbirth intervals, and reviews data on sources of egg and larval mortality in a variety of invertebrate and lower vertebrate species. Dealing with infanticide in nonhuman primates, two chapters critically examine data on infanticide in langurs and its broader theoretical implications. By reviewing sources of infant mortality in populations of small mammals and new laboratory analyses of the causes and consequences of infanticide, this work explores such issues as the ontogeny of infanticide, proximate cues of infants and females which elicit infanticidal behavior in males, the genetical basis of infanticide, and the hormonal determinants.Hausfater and Sarah Blaffer Hrdy, through their selection of materials for this book, evaluate the frequency, causes, and function of infanticide. Historical, ethnographic, and recent data on infanticide are surveyed. "Infanticide" summarizes current research on the evolutionary origins and proximate causation of infanticide in animals and man. As such it will be indispensable reading for anthropologists and behavioral biologists as well as ecologists, psychologists, demographers, and epidemiologists.
Download or read book Infanticide And Parental Care written by Stefano Parmigiani and published by Routledge. This book was released on 2016-12-05 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1994. Infanticide is an extremely complex behavioral pattern that occurs throughout the animal kingdom and it must be considered not only in isolation but also from the viewpoint of an animal's care of its young. Infanticide and Parental Care will be of interest to zoologists, evolutionary biologists and biological anthropologists. The concept of infanticide is considered in different mammals such as humans, primates, pinnipeds, lions, dwarf mongooses and prairie dogs and in non-mammals including insects and birds. Infanticide and Parental Care also views the topic in different environmental conditions such as the natural habitat of an animal and animals kept in laboratory conditions. The wide implications of infanticide mean that this book will also be useful to historians, anthropologists, sociologists and psychologists.
Download or read book More Than Kin and Less Than Kind written by Douglas W. Mock and published by Harvard University Press. This book was released on 2004 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mock tells readers what scientists have discovered about the disturbing side of family conflice in the natural world. He offers a rare perspective on the family as testing ground for the evolutionary limits of selfishness.
Download or read book Encyclopedia of Animal Behavior written by and published by Elsevier. This book was released on 2009-04-01 with total page 2662 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Animal Behavior, Three Volume Set has engaged with great success the efforts of many of the best behavioral biologists of the 21st century. Section editors drawn from the most accomplished behavioral scientists of their generation have enrolled an international cast of highly respected thinkers and writers all of whom have taken great care and joy in illuminating every imaginable corner of animal behavior. This comprehensive work covers not only the usual topics such as communication, learning, sexual selection, navigation, and the history of the field, but also emerging topics in cognition, animal welfare, conservation, and applications of animal behavior. The large section on animal cognition brings together many of the world's experts on the subject to provide a comprehensive overview of this rapidly developing area. Chapters relating to animal welfare give a full view of behavioral interactions of humans with companion animals, farm animals, and animals in the wild. The key role of animal behavior in conservation biology receives broad attention, including chapters on topics such as the effects of noise pollution, captive breeding, and how the behavioral effects of parasites interacts with conservation issues. Animal behavior in environmental biology is highlighted in chapters on the effects of endocrine disruptors on behavior and a large number of chapters on key species, such as wolves, chimpanzees, hyenas and sharks. Clear, accessible writing complements a wealth of information for undergraduate college students about the essential concepts of animal behavior and the application of those concepts across the field. In-depth coverage of concepts, methods, and exemplar organisms serves the needs of graduate students and professionals in the field. From the use of behavior in assessing the welfare of pigs to the social behavior of insects, from animal empathy to bat brains, this authoritative reference, with its in-depth introductory articles, rich array of illustrations, interactive cross-referenced links, and numerous suggested readings, can guide the student or the professional to an expanded appreciation of the far-flung world of animal behavior. An invaluable tool for teaching and a source of enrichment and detail for any topic covered in an animal behavior course, the Encyclopedia of Animal Behavior is the definitive reference work in its field and will be for years to come. Comprehensive work which covers the usual topics along with emerging areas of animal behavior This encyclopedia contains clear, accessible writing and is well illustrated, including an online video, complimenting a wealth of information As an online reference, this work will be subject to period updating. This ensures that the work always remains current Contains in-depth introductions to the material that make each well-illustrated section come alive with the best the new content the discipline has to offer Glossary includes a compendium of behavioral terms that form a succinct mosaic of virtually every concept and phenomenon related to animal behavior Section editors, drawn from around the world, represent the best and the brightest among today's behavioral biologists and have recruited a broad range of internationally recognized experts Editors-in-Chief are experienced scientists and writers who between them have authored or edited eight books and teach courses in animal behavior at their respective universities
Download or read book Animal Behavior written by Ken Yasukawa and published by Bloomsbury Publishing USA. This book was released on 2014-01-22 with total page 1165 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discover why animals do what they do, based on their genes, physiologies, cultures, traditions, survival and mating advantages, and evolutionary histories—and find out how studying behavior in the animal world helps us understand human behavior. The three volumes of Animal Behavior: How and Why Animals Do the Things They Do cover the breadth of the field, addressing causation, development, function, and evolution in a wide range of animals, from invertebrates to humans. Inspired by Nobel laureate Nikolaas Tinbergen's work, the first two volumes follow Tinbergen's four classic questions of animal behavior, while the third volume supplies integrated examples of Tinbergen's investigative process applied in specific cases. Written in an engaging, accessible manner ideal for college students as well as general audiences, this evidence-based collection provides a fascinating tour of animal behaviorists' findings, such as how animal communication can be truthful or deceitful, the deadly serious business behind clashes in the "battle of the sexes," and how documentation of animal behavior can lead to a deeper understanding of human behavior. Each chapter provides both historical background and information about current developments in animal behavior knowledge.
Download or read book Avian Growth and Development written by J. Matthias Starck and published by Oxford University Press, USA. This book was released on 1998 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first re-appraisal in 50 years of concepts of development made in birds. This book is a case study in evolutionary diversification of life histories. Although birds have a rather uniform body plan and physiology, they exhibit marked variation in development type, parental care, and rate of growth. Altricial birds are fully dependent on their parents for warmth and nutrition and begin posthatching life in a more or less embryonic condition. At the other extreme, such superprecocial species as the megapodes are independent of all parental care from hatching, and the neonate, able to fly, resembles an adult bird. This book thus attempts to present an integrative perspective of organism biology, ecology, and evolution.
Download or read book Wild Moms written by Carin Bondar and published by Simon and Schuster. This book was released on 2018-04-03 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Being a mom is a tough job—but imagine doing it in the jungle or out on the safari, faced by the ravages of the elements, a scarcity of resources, and the threat of predators prowling at all times of the day and night. In Wild Moms, Dr. Carin Bondar takes readers on an enthralling tour of the animal kingdom as she explores the phenomenon of motherhood in the wild. A journey through motherhood for the animal kingdom—from the initial phases of gestation and pregnancy through breastfeeding and toddler-rearing and trying to parent a teenager through empty nest syndrome (which, in many of these cases, is quite literal!) to being a grandmother. In Wild Moms, Dr. Bondar answers a whole host of questions about the animal kingdom: How do moms in the animal kingdom cope with crying babies and potty training? How does breastfeeding work in the wild—particularly when a mother is nursing not one baby at a time, but a whole litter? Accessible and entertaining, Wild Moms is a celebration of moms everywhere—and a book guaranteed to make readers think about motherhood in an entirely new way.
