A fascinating and nuanced exploration of why, how, and which birds migrate. Bird migration captivates the human imagination, yet for most of us, key aspects of the phenomenon remain a mystery. How do birds sense the ideal moment to take wing, and once the epic journey has begun, how do they find their distant destinations? Fresh insights about avian movements are still constantly emerging, powered by new tools like molecular genetics and transmitter miniaturization. In this book, renowned ornithologist and author John H. Rappole reveals intriguing results of recent scientific studies on migration, explaining their importance for birders, nature lovers, and researchers alike. Debunking misconceptions about the lives of birds that have persisted for thousands of years, Rappole explores unexpected causes and previously misunderstood aspects of the annual migration cycle. From the role of migrating birds in zoonotic disease transmission to climate change's impact on migration patterns, Rappole tackles crucial questions and ensures that readers come away with a new understanding of why and how birds migrate.

Primate Sexuality provides an authoritative and comprehensive synthesis of current research on the evolution and physiological control of sexual behaviour in the primates - prosimians, monkeys, apes, and human beings. This new edition has been fully updated and greatly expanded throughout to incorporate a decade of new research findings. It maintains the depth and scientific rigour of the first edition, and includes a new chapter on human sexuality, written from a comparative perspective. It contains 2600 references, almost 400 figures and photographs, and 73 tables.

Sasol First Field Guide to Frogs of Southern Africa is a fascinating guide to the frogs of the region.

Full-colour photographs, distribution maps and easy-to-read text will help the budding naturalist to identify the more common frog species that occur in southern Africa, discover where they live, and learn about their behaviour and unusual features.

This book offers a valuable resource, reviewing the current state of knowledge concerning the pathology and epidemiology of infectious diseases in both captive and wild monkeys. The One Health concept forms the framework of all chapters. The multidisciplinary team of authors addresses neglected diseases caused by the three major pathogen groups - bacteria, viruses, and parasites. Moreover, the volume discusses key virulence factors such as the evolution of antibiotic resistance, and the ecological drivers of and human influence on pathogen transmission. Demonstrating how researchers working on monkeys diseases are increasingly thinking outside the box, this volume is an essential reference guide to the field of One Health and will serve as an asset for stakeholders in conservation, healthcare and research organizations that face the challenge of moving beyond classical human oriented approaches to health.

This book examines the biology of tuco-tucos (Ctenomys) from an evolutionary perspective. Historically, these subterranean rodents have long attracted the attention of scientists due to its remarkable chromosomes variability and rapid diversification. A wealth of knowledge on physiology, ecology, genetics, morphology, paleontology, and taxonomy has been documented in the last 70 years through numerous single publications. In this volume, expert investigators review and frame these essays with the breadth of current understanding. The collection of chapters are presented into the major topics: i) Evolution of Ctenomys, ii) Geographic Patterns, iii) Organismal Biology, and iv) Environmental Relationships. Given its scope, the book will be of interest to both students and researchers and may stimulate further research with this exciting model on a wide range of evolutionary topics.

This book elucidates the tissue structure and cell composition of the organs of zebrafish at the microscopic, ultrastructural and molecular levels. The distribution of important macromolecular substances is shown and the morphological relationship between different components is analyzed. The book is divided into 15 chapters and contains more than 700 structural photos, all of which are original experimental pictures of the research group. It shows the histological panorama of the whole zebrafish both in cross and longitudinal sections and covers and interprets the tissues and organs of zebrafish in detail, including oropharynx, taste buds, pharyngeal teeth, liver, etc. A brief text description of the structure and function meaning is available for every picture to facilitate the audience understanding the theoretical knowledge more vivid and concrete. In addition, the 3D reconstruction of the main organs of zebrafish is completed by computer-aided technology, and the three-dimensional morphology of the organs is displayed in an intuitive form. This book provides a reference for postgraduates and researchers in anatomy, biology, animal medicine, animal science, aquaculture, developmental biology, medicine, and experimental animals.

This collection of articles is a sampling of papers vironmental Toxicants and their Effects on the from the second biennial symposium for the 'Etho- Ethology and Behavioral Ecology of Fishes', or- logy and Behavioral Ecology of Fishes'. This con- ganized by Mary Henry and Jack Ward featured ference was also the first North American Meeting invited papers by: John B. Sprague; Mary G. Henry & Gary J. Atchison; as well as contributed papers of the 'International Association of Fish Etholog- ists' and was held October 19-22, 1979 *on the Il- by Robert A. Drummond, Daniel Abel & Chris- linois State University campus in Normal. Illinois, topher C. Koenig; C. G. Prewitt & C. B. Stalnaker; U. S. A. , the site for the first conference in 1977 Kenneth S. Lubinski; J. Doerzbacher & C. F. Bryan; and the proposed site for the third biennial con- Michael A. Barry; Allen E. Bingham & Robert G. ference scheduled for May 1981. The organiza- White. tional committee for these conferences is Jack The symposium 'Reproductive Tactics' was or- Ward, Chairman, Illinois State University (Biology, ganized by Luther Brown, Jeff Baylis and David Normal, IL 61761); Jeffrey Baylis, University of Noakes, and featured invited papers by: Jerry F. Wisconsin (Zoology, Madison, WI 53706); Luther Downhower, Luther Brown, R. Pederson & G. Brown, George Mason University (Biology, Fair- Staples; Roger Thibault; George Barlow; Richard fax, VA 22030); Mike Fitzsimmons, Louisiana State Borowsky & John Diffley; Jack Ward & J. I.

Pinnipeds are marine mammals that include eared seals, true seals, and walruses. This book presents detailed reviews on the ecology and conservation of 10 pinniped species along the coasts and islands in Latin America, from Mexico to Chile and Argentina. Topics covered include their population dynamics, trophic ecology, reproduction, and behavior. In addition, the book addresses major conservation issues regarding climate change, interaction with fisheries, ecotourism, and other human activities.

Sasol First Field Guide to Fishes of Southern Africa is a beginner's guide to the more common fishes of the region, and covers both marine and freshwater species. Full-colour photographs, distribution maps and easy-to-read text will help enthusiasts and budding naturalists to identify the more common fishes in southern Africa, discover where they are found and learn about their unique behaviour, reproduction, conservation status and unusual features. A brief introduction gives context to the topic, outlines points of importance and explains the structure of the book. Sales points: straightforward introductory guide to the region's fishes; suitable for both adult and younger enthusiasts; informative, uncomplicated text written for beginners; useful introductory section; full-colour photographs of each fish; compact enough for ease of use in the field.

Although the specimen of choice in the US drug testing industry is urine, and serum in clinical medicine, interest has recently grown in the use of other matrices as drug testing media. This book provides researchers and forensic toxicologists with a convenient general text summarizing the state of knowledge today. Chapters focus specifically on the application of these practices to drugs of abuse. The up-to-date information provided is complemented with thorough references.

An essential guide to assist those surveying for water voles, whether as a professional ecological consultant, a researcher or simply an interested amateur. This book provides detailed descriptions of all the habitats used by water voles, including ideal habitats as well as less typical places, with annotated photos to help the surveyor home in on just the right areas to look. It also contains a comprehensive photographic reference guide to assist in the correct identification of water vole field signs, and explains how to distinguish them from those of similar species. Tips on where and how to search for field signs are also provided, along with guidance on how best to record survey data.

Fish have evolved to colonise almost every type of aquatic habitat and today they are a hugely diverse group of over 25,000 species. The evolution of this great diversity of species has resulted in a myriad of solutions to the demands posed by the aquatic environment.
Ecological and Environmental Physiology of Fish presents a current and comprehensive overview of fish physiology to demonstrate how living fish function in their environment. As with other books in the Series, the emphasis is on the unique physiological characteristics of the fish, but with applications to questions of broad relevance in physiological ecology. A preliminary chapter introduces the aquatic environment and gives a general description of fish biology, evolution, and taxonomy. Subsequent sections discuss the particular problems of living in water, life in extreme environments, techniques for studying fish ecophysiology, and future research directions.

Primate Sexuality provides an authoritative and comprehensive synthesis of current research on the evolution and physiological control of sexual behaviour in the primates - prosimians, monkeys, apes, and human beings. This new edition has been fully updated and greatly expanded throughout to incorporate a decade of new research findings. It maintains the depth and scientific rigour of the first edition, and includes a new chapter on human sexuality, written from a comparative perspective. It contains 2600 references, almost 400 figures and photographs, and 73 tables.

This comprehensive encyclopedia of the world's birds presents a fantastic visual guide to the major avian species and families, from America's tiniest insect-catchers to the giant, flightless species still living on the African plains. A 420-page directory features fully illustrated entries for hundreds of birds, as well as detailing many other related species. The activities of birds are explored in a natural history section, detailing anatomy, flight, feeding, pairing and nesting. There are also tips on birdwatching for those who want to get a closer look at these fascinating creatures. This is an authoritative and sumptuous guide to the diversity of bird life across the globe.

In nature there exist three main types of biotic interactions between individuals of different species: competition, predation, and mutualism. All three exert powerful selection pressures, and all three shape communities. However, the question of how important interspecific competition in nature really is remains controversial and unresolved. This book provides a critical and exhaustive review of the topic. Although the examples are limited mostly to birds (interspecific competition and community structure have been exhaustively studied in this animal group, and a lot of experimental data are available), the conclusions reached have a far broader relevance to population ecologists in general. The book reasons that the coexistence of species is the result of both past and presently on-going interspecific competition. Furthermore, understanding the importance of interspecific competition in natural systems will be increasingly important when modelling the effects of climate change on populations.

Bats are highly charismatic and popular animals that are not only fascinating in their own right, but illustrate most of the topical and important concepts and issues in mammalian biology. This book covers the key aspects of bat biology, including evolution, flight, echolocation, hibernation, reproduction, feeding and roosting ecology, social behaviour, migration, population and community ecology, biogeography, and conservation.
This new edition is fully updated and greatly expanded throughout, maintaining the depth and scientific rigour of the first edition. It is written with infectious enthusiasm, and beautifully illustrated with drawings and colour photographs.

This book provides a scientific forecast of the development in aquaculture with a focus on the environmental, technological, social and economic constraints that need to be resolved to ensure sustainable development of the industry and allow the industry to be able to feed healthy seafood products to the future generations. The chapters included discuss the most critical bottlenecks of the development encompassing subjects of understanding the environmental impacts, the current state-of-art in monitoring programs and in coastal zone management, the important interactions between wild and cultured organisms including release of non-native species into the wild, the current trends within the development of aquafeeds along with human health aspects as well as the political, socio-economic and economic trends within the industry including a chapter on approaches taken by Non Governmental Organisations (NGOs) to aquaculture. Finally the last chapter provides different future scenarios of the industry based on the identified bottlenecks.

This title focuses on the essence of how to go about identifying birds. Topics covered include size, shape, bill length, and other physical features that provide clues to the birds’ lifestyle and identity. Full colour photographs and simple line drawings support the text.

This title is suitable for beginners of all ages as well as younger birders – in fact, for anyone daunted by the prospect of getting started in the captivating pastime of birding.

A stunningly illustrated guide to the wonderful world of hummingbirds With their glorious colors, glittering iridescence, astonishing powers of flight, and many characteristics unique in the world of birds, hummingbirds are extraordinary-true jewels of nature. This beautiful book is a celebration of all aspects of hummingbirds and their world. It features hundreds of the most spectacular photographs of hummingbirds ever taken, exquisite illustrations, and a lively, readable text that presents the latest scientific information and includes up-to-date details about every species. A familiar sight across much of the Americas, hummingbirds have long captured the imagination and played an important part in myths, legends, and other aspects of human culture. Today, hummingbirds are among the most popular of all birds, sought after by serious and casual birders alike. They inspire questions in anyone lucky enough to see them. How can they fly like that? Why are they so colorful? How many are there? Where and how do they live? How do they survive? This book answers these and many other questions, providing an enlightening and enjoyable guide to hummingbirds that can only deepen their wonder. A definitive yet accessible account of all aspects of hummingbird life More than 540 spectacular color photographs, illustrating all 101 hummingbird genera and over two-thirds of the world's 369 species Specially commissioned illustrations revealing details of anatomy and behavior Meticulously researched facts and figures on status, population, distribution, and conservation designations of all the world's hummingbirds

This book provides a resource of current understandings about various aspects of the biology of spermatogonia in mammals. Considering that covering the entire gamut of all things spermatogonia is a difficult task, specific topics were selected to provide foundational information that will be useful for seasoned researchers in the field of germ cell biology as well as investigators entering the area. Looking to the future, the editors predict that the foundational information provided in this book -- combined with the advent of new tools and budding interests in use of non-rodent mammalian models -- will produce another major advance in knowledge regarding the biology of spermatogonia over the next decade. In particular, we anticipate that the core molecular machinery driving different spermatogonial states in most, if not all, mammals will be described fully, the extrinsic signals emanating from somatic support cell populations to influence spermatogonial functions will become fully known, and the capacity to derive long-term cultures of SSCs and transplant the population to regenerate spermatogenesis and fertility will become a reality for higher order mammals.

The orangutan is the most highly endangered species of great ape. Orangutans are threatened by deforestation, poaching, the illegal pet trade, and the isolation and fragmen tation of dwindling wild populations. Their conservation is impeded by certain aspects of their ecology (e. g. , a rain forest habitat) and certain features of their life history (e. g. , an eight-to twelve-year interbirth interval). Added to the U. S. Endangered Species List in 1970, the orangutan is now clearly on the road to extinction. The number of wild orangutans in Borneo and Sumatra is currently estimated to have decreased to between 12,300 and 20,571 individuals. Only 2% of original orangutan habitat is protected and some of these areas are now being destroyed. Clearly, attention to ecology, demography, censusing, rehabilitation, and conservation is essential if the orangutan is to survive in the wild beyond the next century. The protection of orangutans is a complex, multifaceted problem, involving such pressing issues as human poverty, overpopulation, and the economic development of Southeast Asia. Although the orangutan has been placed in Appendix I of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), more orangutans were sold illegally in Taiwan between 1990 and 1993 than are housed in all the world's zoos. In the past, scientific and public attention has centered on the African apes. For this reason, the sole Asian great ape, the orangutan, has been called the "neglected ape.

The social calls of bats are an area about which relatively little is known, with more research still required to expand our understanding. However, these calls are increasingly recognised as a useful aid to identification: they appear to be species specific and are indicative of behaviour – as in territorial activity of males during the mating season. Because the gathering and interpretation of bat echolocation data are a matter of course during research, conservation and consultancy, it is a logical progression to build momentum behind the consideration of social calls in mainstream bat-related work. A better understanding of this subject could mean that non-intrusive survey methods are developed, ensuring that what is being observed is, as far as possible, purely natural behaviour. In turn this will contribute to better interpretation and more suitable mitigation, compensation and/or enhancement solutions. The book summarises what is understood so far about social calls of the bat species occurring in Britain and Ireland, and north-west Europe. This new edition has been updated and expanded throughout, now containing: foreword by the bat authority Michel Barataud, author of Acoustic Ecology of European Bats   almost double the number of figures and tables as appeared in the first edition completely overhauled call library, all in full spectrum format, with new additional examples  three entirely new chapters, covering bat-related acoustics, settings for social interaction, and survey guidelines The material will be useful to people carrying out bat studies, at whatever level and for whatever purpose, and will also encourage others to undertake further research. What's more, social calls are fascinating to listen to: they are, after all, produced with listeners in mind (other bats). In light of this, the book is accompanied by an extensive downloadable library of sound files which offer a unique gateway into the private life of bats. 

Based on field studies spanning nearly 40 years, this reference book summarizes and integrates past research with new and previously unpublished information on the behavioral ecology of Africa's red colobus monkeys from study sites as diverse as Senegal, Uganda and Zanzibar. It provides an unparalleled compilation of information on taxonomy, genetics, vocalizations, demography, social organization, dispersal, social behavior, reproduction, mortality factors, diet, ranging patterns, interspecific relations, and conservation. Social relationships in red colobus are less rigidly structured than in other African monkeys, resulting in considerable variation in social organization and group composition, both within and between taxa. This provides a unique opportunity to examine the extent to which social variables correlate with differences in habitat quality, demography, and predation by chimpanzees and humans. Unfortunately, at least half of the 18 taxa of red colobus are now threatened with extinction. Conservation problems are described, causal factors identified, and solutions proposed. This volume is intended not only to serve as a reference book, but to stimulate and guide future long-term research and to encourage effective conservation action.

This book describes one of our closest relatives, the orangutan, and the only extant great ape in Asia. It is increasingly clear that orangutan populations show extensive variation in behavioural ecology, morphology, life history, and genes. Indeed, on the strength of the latest genetic and morphological evidence, it has been proposed that orangutans actually constitute two species which diverged more than a million years ago - one on the island of Sumatra the other on Borneo, with the latter comprising three subspecies.
This book has two main aims. The first is to carefully compare data from every orangutan research site, examining the differences and similarities between orangutan species, subspecies, and populations. The second is to develop a theoretical framework in which these differences and similarities can be explained. To achieve these goals the editors have assembled the world's leading orangutan experts to rigorously synthesize and compare the data, quantify the similarities or differences, and seek to explain them.
Orangutans is the first synthesis of orangutan biology to adopt this novel, comparative approach. It analyses and compares the latest data, developing a theoretical framework to explain morphological, life history, and behavioural variation. Intriguingly, not all behavioural differences can be attributed to ecological variation between and within the two islands; relative rates of social learning also appear to have been influential. The book also emphasizes the crucial impact of human settlement on orangutans and looks ahead to the future prospects for the survival of critically endangered natural populations.