Among the unresolved topics in evolutionary biology and behavioral ecology are the origins, mechanisms, evolution, and consequences of developmental and phenotypic diversity. In an attempt to address these challenges, plasticity has been investigated empirically and theoretically at all levels of biological organization-from biochemical to whole organism and beyond to the population, community, and ecosystem levels. Less commonly explored are constraints (e.g., ecological), costs (e.g., increased response error), perturbations (e.g., alterations in selection intensity), and stressors (e.g., resource limitation) influencing not only selective values of heritable phenotypic components but, also, decisions and choices (not necessarily conscious ones) available to individuals in populations. Treating extant mammals, the primary purpose of the proposed work is to provide new perspectives on common themes in the literature on robustness ("functional diversity"; differential resistance to "deconstraint" of conserved elements) and weak robustness (the potential to restrict plasticity and evolvability), plasticity (variation expressed throughout the lifetimes of individuals in a population setting "evolvability potential"), and evolvability (non-lethal phenotypic novelties induced by endogenous and/or exogenous stimuli). The proposed project will place particular emphasis upon the adaptive complex in relation to endogenous (e.g., genomes, neurophysiology) and exogenous (abiotic and biotic, including social environments) organismal features discussed as regulatory and environmental perturbations with the potential to induce, and, often, constrain variability and novelty of form and function

In Butterfly Biology Systems Roger Dennis explores key topics and contentious issues in butterfly biology, specifically those in life history and behaviour. Uniquely, using a systems approach, the book focuses on the degree of integration and feedback between components and elements affecting each issue, as well as the links between different issues. The book comprises four sections. The first two sections introduce the reader to principles and approaches for investigating complex relationships, and provide a platform of knowledge on butterfly biology. The final two sections deal in turn with life history and behaviour, covering key issues affecting different stages of development from eggs to adults. The book is extensively illustrated with original diagrams and models, all of which have detailed legends, produced to enhance a broader understanding, and to provide templates for future research. It includes a detailed bibliography and glossary providing an essential gateway to the extensive literature on butterfly biology. Butterfly Biology Systems is essential reading for graduate students and researchers in insect ecology, evolution, behaviour and conservation. It will also be of great value to anyone interested in butterflies. Introduces a systems approach to butterfly biology Includes succinct reviews of the key interrelationships in butterfly life history and behaviour Illustrates more than 100 models to advance research into butterfly biology systems

Recommended in CHOICE, February 2021 Insects are all around us, outweighing humanity by 17 times. Many are nuisances; they compete with us for food and carry some of our most devastating diseases. Many common pests have been transported worldwide by humans. Yet, some recent reports suggest dramatic declines in some important groups, such as pollinators and detritivores. Should we care? Yes, we should. Without insect pollinators we'd lose 35% of our global food production; without detritivores, we would be buried in un-decayed refuse. Insects are also critical sources for nutritional, medical and industrial products. A world without insects would seem a very different and unpleasant place. So why do insects inspire such fear and loathing? This concise, full-color text challenges many entrenched perceptions about insect effects on our lives. Beginning with a summary of insect biology and ecology that affect their interactions with other organisms, it goes on to describe the various positive and negative ways in which insects and humans interact. The final chapters describe factors that affect insect abundance and approaches to managing insects that balance their impacts. The first textbook to cater directly to those studying Insect and Society or Insect Ecology modules, this book will also be fascinating reading for anyone interested in learning how insects affect human affairs and in applying more sustainable approaches to "managing" insects. This includes K-12 teachers, undergraduate students, amateur entomologists, conservation practitioners, environmentalists, as well as natural resource managers, land use planners and environmental policy makers.

Homing phenomena must be considered an important aspect of animal behaviour on account of their frequent occurrence, their survival value, and the variety of the mechanisms involved. Many species regularly rely on their ability to home or reach other familiar sites, but how they manage to do this is often uncertain. In many cases the goal is attained in the absence of any sensory contact, by mechanisms of indirect orientation whose complexity and sophistication have for a long time challenged the skill and patience of many researchers. A series of problems of increasing difficulty have to be overcome; researchers have to discover the nature of orienting cues, the sensory windows involved, the role of inherited and acquired information, and, eventually, how the central mechanisms process information and control motory responses. Naturally, this book emphasizes targets achieved rather than areas unexplored and mysteries unsolved. Even so, the reader will quickly realize that our knowledge of phenomena and mechanisms has progressed to different degrees in different animal groups, ranging from the mere description of homing behaviour to a satisfactory insight into some underlying mechanisms. In the last few dacades there have been promising developments in the study of animal homing, since new approaches have been tried out, and new species and groups have been investigated. Despite this, homing phenomena have not recently been the object of exhaustive reviews and there is a tendency for them to be neglected in general treatises on animal behaviour.

It is a widely held belief that a climax vegetation of closed forest systems covered the lowlands of Central and Western Europe before humans intervened in prehistoric times to develop agriculture. If this intervention had not taken place, it would still be there and so if left, the grassland vegetation and fields we see today would revert to its natural closed forest state, although with a reduced number of wild species. This book challenges this view, using examples from history, pollen analyses and studies on the ecology of tree and shrub species such as oak and hazel. It tests the hypotheses that the climax vegetation is a closed canopy forest against the alternative one in which species composition and succession of vegetation were governed by herbivores and that the Central and Western European lowlands were covered by a park-like landscape consisting of grasslands, scrub, solitary trees and groves bordered by a mantle and fringe vegetation. Comparative information from North America is also included, because the forests there are commonly regarded as being analogous to the primeval vegetation in Europe. This title is a revised, updated and expanded translation of book published in Dutch.

Egg Parasitoids in Agroecosystems with emphasis on Trichogramma was conceived to help in the promotion of biological control through egg parasitoids by providing both basic and applied information. The book has a series of chapters dedicated to the understanding of egg parasitoid taxonomy, development, nutrition and reproduction, host recognition and utilization, and their distribution and host associations. There are also several chapters focusing on the mass production and commercialization of egg parasitoids for biological control, addressing important issues such as parasitoid quality control, the risk assessment of egg parasitoids to non-target species, the use of egg parasitoids in integrated pest management programs and the impact of GMO on these natural enemies. Chapters provide an in depth analysis of the literature available, are richly illustrated, and propose future trends.

The papers in this book are organized as follows: insect-plant communities, host-plant selection, genetics and evolution, host-plant resistance and application of transgenic plants, and multitrophic interactions. Besides seven invited papers and a paper with concluding remarks, this volume also contains the short communications of all 115 oral presentations and posters. Included too, are the summaries of four European Science Foundation workshops held over the past two years, where European scientists discussed the state-of-the-art and the future of major topics in insect-plant interactions in order to develop better integrated research programs. The field of insect-plant interactions nowadays includes almost all of biology, as well as parts of chemistry and physics. It takes a central position in biology because insects are the most abundant animal group, half of them are herbivores and they dominate all terrestrial ecosystems. Knowledge of insect-plant interactions is thus fundamental to an understanding of the evolution of life on Earth. Two major topics of worldwide concern give this field an extra dimension. First, large amounts of food crops are still lost due to insect pests. With the increasing concern for environmental pollution and the subsequent plans to drastically reduce pesticides, integrated pest management and development of resistant crops become a major focus in agriculture. The importance of the study of insect-plant relationships is thus continuously augmented. Clearly, successful pest control demands sufficient fundamental knowledge of pest-host interactions. Second, such work can contribute towards stopping or even counterbalancing the threatening biodiversity crisis thanks to an understanding of how the interaction of insects and plants has influenced and still influences the diversification and speciation (evolution) of both groups. These problems should, of course, be approached at a multitrophic level.

When Nancy Beckage and I first met in Lynn Riddiford's laboratory at the University of Washington in the mid 1970s, the fields of parasitology, behavior, and endocrinology were thriving and far-flung--disciplines in no serious danger of intersecting. There were rumors that they might have some common ground: Behavioural Aspects of Parasite Transmission (Canning and Wright, 1972) had just emerged, with exciting news not only of the way parasites themselves behave, but also of Machiavellian worms that caused intermediate hosts to shift fundamental responses to light and disturbance, becoming in the process more vulnerable to predation by the next host (Holmes and Bethel, 1972). Meanwhile, biologists such as Miriam Rothschild (see Dedication), G. B. Solomon (1969), and Lynn Riddiford herself (1975) had suggested that the endocrinological rami of parasitism might be subtle and pervasive. In general, however, para fications sites were viewed as aberrant organisms, perhaps good for a few just-so stories prior to turning our attention once again to real animals. In the decade that followed, Pauline Lawrence (1986a, b), Davy Jones (Jones et al., 1986), Nancy Beckage (Beckage, 1985; Beckage and Templeton, 1986), and others, including many in this volume, left no doubt that the host-parasite combination in insect systems was physiologically distinct from its unparasitized counterpart in ways that went beyond gross pathology."

The question "Why are there so many species?" has puzzled ecologist for a long time. Initially, an academic question, it has gained practical interest by the recent awareness of global biodiversity loss. Species diversity in local ecosystems has always been discussed in relation to the problem of competi tive exclusion and the apparent contradiction between the competitive exclu sion principle and the overwhelming richness of species found in nature. Competition as a mechanism structuring ecological communities has never been uncontroversial. Not only its importance but even its existence have been debated. On the one extreme, some ecologists have taken competi tion for granted and have used it as an explanation by default if the distribu tion of a species was more restricted than could be explained by physiology and dispersal history. For decades, competition has been a core mechanism behind popular concepts like ecological niche, succession, limiting similarity, and character displacement, among others. For some, competition has almost become synonymous with the Darwinian "struggle for existence", although simple plausibility should tell us that organisms have to struggle against much more than competitors, e.g. predators, parasites, pathogens, and envi ronmental harshness.

This is a book about proximate mechanisms. Although some theoreti cal structure is used to introduce the subject, the intent is to offer a comprehensive view of the mechanistic side of searching (or foraging) so as to balance the current emphasis of books on mathematical and functional models. It seems to me that the pendulum needs to swing back to studies of how animals behave, and that maybe in so doing models will become valuable again in driving experimentation. I have probably included too many examples in this book, and some are even presented in great detail. Hopefully, they provide a complete picture of the kind of animals used, the experimental setup, the kinds of data yielded, and how the data were analysed. I have done this in response to frustrating experiences of reading chapters in behavioural ecobgy books that provide insufficient information with which to evaluate an author's conclusion."

I have spent less time in the arid zone in the last few years than I did during the 1960's, 1970's and early 1980's. This results from a progression through age and a career structure which gradually shifted the emphasis of my work from being essentially field-oriented to essentially office-hound. When, therefore, I was asked by John Cloudsley-Thompson to undertake the writing of this hook I hesitated for two reasons. One reason was that, although I now had access to good library facilities and kept up with the literature on the arid zones and their fauna, I was not sure that a sedentary and pleasant life in a temperate highland island in tropieal Africa would provide a mental attitude suitable to writing a hook which related to areas where life is usually nomadie and often extremely disagreeable. The other reason was that I was uncertain whether I could devote the time necessary to researehing and writing the hook on top of my professional (which now specifical ly excluded research in the arid zones and on camels) and social (new-found and time-consuming) commitments. In the event I accepted and the fates were kind to me. By some peculiar combination of circumstances I was given the opportunity to spend a considerable part of the first half of 1988 in some of the driest areas of the globe. I had already visited all of the locations used for the construction of Fig. 2."

1. 1 THE STUDY OF CONFLICT Polemos Pantoon Pater Heraclitus Conflict on all levels of organic existence is pervasive, persistent, ubiquitous. Conflict is the universal experience of all life forms. Organisms are bound in multiple conflict-configurations and -coalitions, which have their own dynamic and their own logic. This does not mean, however, that the more paroxysmal forms of conflict behaviour, naked violence and destruction, are also universal. Conflict and cooperation are always intertwined. Conflicts do, however, have a propensity to gravitate towards violence. There is, as Pettman (1975) pointed out, no accepted or agreed list of the social units by which conflicts might be classified. To talk of conflict in intra personal, inter-personal, familial, group, class, ethnic, religious, intra-state or inter-state terms is to assume, perhaps erroneously, that 'each kind of social unit, having its own range of size, structure, and institutions, will also have its own modes of interaction and thus its own patterns of conflict with other social units' (Fink, 1968) like and unlike itself. Such an assumption merits scrutiny on its own, since, despite the plausibility of some sort of analytical link between the parties to a conflict and the nature of the confrontation that ensues, the link should be demonstrated and not allowed to stand by assertion alone. This volume is devoted to one type of analysis of conflict, the socio biological one."

Archie Carr, one of the greatest biologists of the twentieth century, played a leading part in finding a new and critical role for natural history and systematics in a post-1950s world dominated by the glamorous science of molecular biology. With the rise of molecular biology came a growing popular awareness of species extinction. Carr championed endangered sea turtles, and his work reflects major shifts in the study of ecology and evolution. A gifted nature writer, his books on the natural history of sea turtles and their habitats in Florida, the Caribbean, and Africa entertained and educated a wide audience. Carr's conservation ethic grew from his field work as well as his friendships with the fishermen who supplied him with many of the stories he retold so engagingly. With Archie Carr as the focus, The Man Who Saved Sea Turtles explores the evolution of the naturalist tradition, biology, and conservation during the twentieth century.

This publication contains proceedings of a Seminar on GLUCOSINOLATES IN RAPESEEDS - Analytical Aspects, held in Gembloux (Belgium) from 1 to 3 October 1986. The meeting was organized by request of the Commission of the European Communities in the context of the CEC Programme of Research on Plant Productivity. The main aim of the Seminar was to contribute to the elaboration of reliable quantitative methods for glucosinolate determination in rapeseeds. Fourty Experts from thirteen countries participated in this Seminar. Original contributions which were considered of special importance for the subject covered by the Seminar were presented and discussed. Thanks are due to the Chairmen, Dr. Heaney R., Dr. Biston R., Dr. Ri- baillier D., Prof. Dr. Robbelen G., authors and participants in the meeting for their contributions, friendliness and cooperation. Special thanks go to Dr. Mc Gregor (Canada) and Dr. Uppstrom B. (Swe- den) who gave Members the benefit of their knowledge. Finally, I would also like to thank those who have helped in organizing this Seminar Director Lecomte R. (Centre de Recherches Agronomiques de l'Etat, Gembloux), Rector Ledent A. (Faculte des Sciences Agronomiques de l'Etat, Gembloux), Prof. Severin M., Dr. Biston R., Mrs Bock and all my colleagues.

Feeding Ecology in Apes and Other Primates focuses on evolutionary perspectives of the complex interactions between the environment, food sources, physiology and behaviour in primates. This highly interdisciplinary volume provides a benchmark to assess dietary alterations that affected human evolution by putting the focus on the diet of hominid primates. It also offers a fresh perspective on the behavioural ecology of the last common ancestor by integrating corresponding information from both human and non-human primates. The potential of innovations of applied biotechnology are also explored to set new standards for future research on feeding ecology, and new information on feeding ecology in humans, apes and other primates is synthesized to help refine or modify current models of socioecology. By taking a comparative view, this book will be interesting to primatologists, anthropologists, behavioural ecologists and evolutionary biologists who want to understand better non-human primates, and the primate that is us.

In the last few years there has been an excltmg upsurge in seabird research. There are several reasons for this. Man's increased ex ploitation of natural resources has led to a greater awareness of the potential conflicts with seabirds, and of the use of seabirds to indicate the damage we might be doing to our environment. Many seabird populations have increased dramatically in numbers and so seem more likely to conflict with man, for example through competition for food or transmission of diseases. Oil exploration and production has resulted in major studies of seabird distributions and ecology in relation to oil pollution. The possibility that seabirds may provide information on fish stock biology is now being critically investigated. Some seabird species have suffered serious declines in numbers and require conservation action to be taken to reduce the chances that they will become extinct. This requires an understanding of the factors determining their population size and dynamics."

This book provides a unique perspective on the destruction - both natural and human-caused - of coral reef ecosystems. Reconstructing the ecological history of coral reefs, the authors evaluate whether recent dramatic changes are novel events or part of a long-term trend or cycle. The text combines principles of geophysics, paleontology, and marine sciences with real-time observation, examining the interacting causes of change: hurricane damage, predators, disease, rising sea-level, nutrient loading, global warming and ocean acidification. Predictions about the future of coral reefs inspire strategies for restoration and management of ecosystems. Useful for students and professionals in ecology and marine biology, including environmental managers.

Oceanic islands are storehouses for unique creatures. Zoologists have long been fascinated by island animals because they break all the rules. Speedy, nervous, little birds repeatedly evolve to become plump, tame and flightless on islands. Equally strange and wonderful plants have evolved on islands. However, plants are very poorly understood relative to animals. Do plants repeatedly evolve similar patterns in dispersal ability, size and defence on islands? This volume answers this question for the first time using a modern quantitative approach. It not only reviews the literature on differences in defence, loss of dispersal, changes in size, alterations to breeding systems and the loss of fire adaptations, but also brings new data into focus to fill gaps in current understanding. By firmly establishing what is currently known about repeated patterns in the evolution of island plants, this book provides a roadmap for future research.

Bears have fascinated people since ancient times. The relationship between bears and humans dates back thousands of years, during which time we have also competed with bears for shelter and food. In modern times, bears have come under pressure through encroachment on their habitats, climate change, and illegal trade in their body parts, including the Asian bear bile market. The IUCN lists six bears as vulnerable or endangered, and even the least concern species, such as the brown bear, are at risk of extirpation in certain countries. The poaching and international trade of these most threatened populations are prohibited, but still ongoing. Covering all bears species worldwide, this beautifully illustrated volume brings together the contributions of 200 international bear experts on the ecology, conservation status, and management of the Ursidae family. It reveals the fascinating long history of interactions between humans and bears and the threats affecting these charismatic species.

It is two years since a general meeting of the Gesellschaft fur Biologische Chemie first requested us to organize the 21 st Mosbach Colloquium on mammalian reproduction, and one year since we received final authorization to do so. The present volume contains the papers read at the Colloquium, but the discussions have been omitted because writing and proof reading them would have delayed the appearance of this volume for an unjustifiable long time. Besides, in most cases the discussion was of a relatively specific nature and we did not consider it essential, bearing in mind that the purpose of the Mosbach Col loquia is to provide advanced further education for the non specialist. One of us has referred to this and to the topical structure of the 21 st Colloquium in the introductory and final remarks. Helpful suggestions for organizing the program were made by some of the invited speakers, but the first important impulses VON BERSWORDT-WALLRABE, Dr. ELGER, Dr. came from Dr. GERHARDS, Dr. NEUMANN, and Dr. UFER to whom we here wish express our thanks. Thanks are also due to those whose donations, some of which were very generous, made it financially possible to organize the Colloquium. HEINZ GIBIAN July 1970 ERNST JURGEN PLOTZ Contents Introduction. H. GIBIAN (Berlin) 1 General Outline about Reproductive Physiology and its Developmental Background. A. JOST (Paris) .. 4 The Significance of Hormones in Mammalian Sex Differentia tion as Evidenced by Experiments with Synthetic Andro gens and Antiandrogens. W. ELGER, F. NEUMANN, H.

The primary goal of this volume is to advance the conceptual unification of primatology and the other evolutionary sciences by addressing the evolution of behavioral flexibility in the Primate Order. One of the first lessons learned in introductory statistics is that events in the world vary. However, some species exhibit a greater range of phenotypic plasticity, including behavioral flexibility, than others. Primates are among those taxa advanced to display an uncommon degree of behavioral diversity. The proposed volume would explore the behavioral ecology and evolution of behavioral flexibility in primates in relation to the optimization of survival, (inclusive) reproductive success, and phenotypic influence.

Behavioral Flexibility in Primates: Causes and Consequences proposes that genetic conflicts of interest are ubiquitous in primates who may employ force, coercion, persuasion, persistence, scrambles, cooperation, exploitation, manipulation, social parasitism, dispersal or spite to resolve or manage them. Where one individual or group imposes severe costs to inclusive fitness or to the phenotype upon another individual, the latter may adopt a counterstrategy in an attempt to minimize its own costs. Counterstrategies may, in turn, impose costs upon the original actor(s), and so on, possibly yielding an evolutionary "chase" ("interlocus contest evolution"). The evolution of phenotypic plasticity in primates may often pertain to attempts to mitigate genetic conflicts of interest, and classic work in behavioral ecology leads to the conclusion that for females ("energy-maximizers"), conflict will pertain primarily to competition for food (that can be converted to offspring) while, for males ("time-minimizers"), conflict will pertain primarily to competition for mates. These related and novel perspectives are developed in this new volume.

Despite the potential synergy that can result from basing management applications on results from research, there is a polarization of cultures between wildlife managers and wildlife researchers. Wildlife Science: Connecting Research with Management provides strategies for bridging cultural and communication gaps between these groups.

Contributors present case studies highlighting the role of state and federal agencies and private organizations in management and research; the lingering disconnects between grassland birds, quail, and deer research and management; as well as the development of management techniques from field research, rangelands management, and ranch management.

Case Studies:

• The Disconnect between Quail Research and Quail Management
• Sage-Grouse (Centrocercus urophasianus) and the Disconnect between Research and Management on Public Lands in the American West
• Ecological Goals, not Standardized Methods, are needed to Create and Maintain Habitat for Grassland Birds
• A Historic Perspective of the Connectivity between Waterfowl Research and Management
• Deer in the Western United States
• Whitetail deer (Odocoileus virginianus) in the Eastern United States
• Impacts of Wind Energy Development on Wildlife: Challenges and Opportunities for Integrated Science, Management, and Policy
• The Role of Joint Ventures in Bridging the Gap between Research and Management
• Developing Management Strategies from Research: the Pushmataha Forest

This book is based on more than 1000 references to English and French articles produced in the region over many decades. A comprehensive review of the achievements in farming and research in both wet and dryland is given, related to the grasslands of: Eastern Africa, extending from Malawi to Eritrea, including Ethiopia, Kenya, Uganda, Tanzania, Somalia, Zambia, Rwanda, Burundi, Sudan and eastern Zaire. Sown grasses, within the time-proven system of mixed-farming based on crop-grass rotations. Fodders, e.g. Elephant grass, dryland-Sorghum, lucerne, Leucaena, tropical legumes and hay. /LIST The main objectives of the book are to illustrate the value of East African grasses and fodders for: Livestock: East Africa is the gene-centre of the world's most famous cultivated tropical grasses capable of achieving high animal performance, also without fertilizer. Soil fertility maintenance: local farmers pioneered the practice of grass fallows with Elephant grass to restore soil fertility. This was later extended to sown grasses to accelerate the restoration process. Crop yields are doubled following pasture. Environmental protection: priority in natural grassland is to prevent deterioration. In crop-pasture rotations grasses are effective in trapping rainfall and in reducing erosion by improved soil structure. Topics discussed include animal manure versus fertilizer; zero versus direct grazing; fodder crops (annual and perennial) versus grass conservation; seed production and plant breeding. The main species in cultivation are described in detail.

Unique 'graphic novel' format and short length will engage students immediately, including those with limited background knowledge. An efficient and accessible academic resource to illustrate the technical concepts, theories and frameworks of socio-ecological approaches. This new graphic approach to degree education is exciting and highly engaging, encouraging creativity that can deepen academic understanding. No other book introduces the complexities of interdisciplinarity and valuing nature in such an accessible way. The sections reflect a logical and natural progression from an initial introduction to meanings to the wider context. Approaches the concept in a simple, chronological and visual manner that sets it apart from other educational resources on ecology. The book contains a variety of pedagogical tools and orientation that help guide the reader through the book, offer further reading, jump between sections, and provide the opportunity to review what has been learned so far. The characters depicted in the book reflect the diversity of the student body, with BAME students included as well as different personalities. Ideal for undergraduates in the fields of ecology, human and physical geography, conservation science, environment social science and spatial planning. The materials work pedagogically for 1st Year (Supplementary and Specialised) and 2nd year (Core and Introductory). Particularly useful for natural scientists with limited training, but expectations to engage, in the critical social science dimensions of resource management. Secondary market among policy makers and practitioners either new to issues of valuing nature or those wishing to clarify or contextualise further their understanding.