A photographic celebration of the return of otters to our rivers and freshwater wetlands after a drastic decline. Ripples of excitement are spreading through Europe's rivers and wetlands. A generation ago, otter watching was a wildlife highlight restricted to remote coastal areas - otter populations had been decimated over the previous century by pesticide poisoning and habitat disturbance. Now we are seeing the positive effect of determined conservation efforts over recent decades. As our waterways improve, otters are returning and spreading throughout their former habitats. One of the UK's leading natural history photographers, Laurie Campbell got to know otters while working in Scotland's Highlands and Islands, but he had never seen these elusive predators on his home beat. Then, in the early 1990s, he was delighted to find otters back on the Tweed and its tributaries, a river system he has lived close to for most of his life. The discovery launched him on a quest to create a photographic account of their lives on his home river. More than two decades later, otter numbers continue to increase, and new generations of otters have become more confident around people, sometimes appearing in broad daylight and in town centres. Laurie continues his long-standing study, still photographing the otters through the changing seasons - always with an eye on the bigger picture of the river itself and the plants and animals that share the otters' habitat. Wildlife journalist and writer Anna Levin accompanies Laurie to the riverbank and learns of his working philosophy and fieldcraft. Together they weave a wealth of information into the stories that the pictures tell. While extracts from Anna's notebooks offer a vivid glimpse of the photographer at work and the otters that enchant them both.

Rats have long been recognized as a valuable biomedical research model, notably in the investigation of aging, toxicology, addiction, and common human diseases such as diabetes and hypertension. In many instances, individuals conducting such research studies are charged with important responsibilities, including animal facility management, animal husbandry, veterinary care, regulatory compliance, and various experimental methodologies. With the advent of genetic manipulations and biomedical research technological advances such as bioimaging, the versatility and usefulness of the rat as an animal model has soared. The Laboratory Rat, Second Edition captures the multiple advances in this important animal model's husbandry, veterinary care, and experimental methodology. This edition features augmented, expanded, and novel information on biology, anesthesia, analgesia, and experimental techniques benefiting personnel working with rats-from the animal care staff to the researcher and everyone in between. The book is also extremely useful to institutional animal care and use program supporters and elements, including animal care and use committees, institutional officials, occupational health and safety professionals, veterinary technicians, and veterinarians.

This book gathers current data on the two types of fish metamorphoses and their endocrine controls. It will be of interest for fish biologists as well as comparative physiologists and endocrinologists. Metamorphosis is a major developmental phase characterized by morphological and physiological changes. It prepares organisms for a drastic shift in habitat and behavior. Among vertebrates, besides the well-known larval metamorphosis in amphibians, two types of metamorphosis are also described in the life cycle of some fish species. Larval metamorphosis, also called first metamorphosis or true metamorphosis, is encountered in lampreys, representative species of basal vertebrates as well as in some teleost groups, elopomorphs and pleuronectiforms, and possibly also in some other teleost species. Secondary metamorphosis occurs in juveniles of some diadromic migratory teleosts, such as salmons and eels, and compared to larval metamorphosis, involves less drastic morphological changes.

Laboratory animals, including ferrets, play an important role in biomedical research and advances. The humane care and management of these animals remains an ongoing concern. Published in color to provide greater clarity to the techniques and concepts discussed, The Laboratory Ferret presents basic information and common procedures in detail to provide a quick reference for investigators, technicians, and caretakers in the laboratory setting. The book presents a greater understanding of the use of the ferret in research, such as in studies on influenza. It is a valuable, handy reference for experienced individuals and for those without extensive training in working with ferrets.

Graham Martin takes the reader deep into the world of birds from a new perspective, with a 'through birds' eyes' approach to ornithology that goes beyond the traditional habitat or ecological point of view. There is a lot more to a bird's world than what it receives through its eyes. This book shows how all of the senses complement one another to provide each species with a unique suite of information that guides their daily activities. The senses of each bird have been fine-tuned by natural selection to meet the challenges of its environment and optimise its behaviour: from spotting a carcase on a hillside, to pecking at minute insects, from catching fish in murky waters, to navigating around the globe. The reader is also introduced to the challenges posed to birds by the obstacles with which humans have cluttered their worlds, from power lines to windowpanes. All of these challenges need explaining from the birds' sensory perspectives so that effective mitigations can be put in place. The book leads the reader through a wealth of diverse information presented in accessible text, with over 100 colour illustrations and photographs. The result is a highly readable and authoritative account, which will appeal to birdwatchers and other naturalists, as well as researchers in avian biology. The author has researched the senses of birds throughout a 50-year career in ornithology and sensory science. He has always attempted to understand birds from the perspective of how sensory information helps them to carry out different tasks in different environments. He has published papers on more than 60 bird species, from Albatrosses and Penguins, to Spoonbills and Kiwi. His first fascination was with owls and night time, and owls have remained special to him throughout his career. He has collaborated and travelled widely and pondered diverse sensory challenges that birds face in the conduct of different tasks in different habitats, from mudflats and murky waters, to forests, deserts and caves. In recent years he has focused on how understanding bird senses can help to reduce the very high levels of bird deaths that are caused by human artefacts; particularly, wind turbines, power lines, and gill nets.

Indigenous knowledge that embraces ornithology takes in whole social dimensions that are inter-linked with environmental ethos, conservation and management for sustainability. In contrast, western approaches have tended to reduce knowledge to elemental and material references. This book looks at the significance of indigenous knowledge of birds and their cultural significance, and how these can assist in framing research methods of western scientists working in related areas. As well as its knowledge base, this book provides practical advice for professionals in conservation and anthropology by demonstrating the relationship between mutual respect, local participation and the building of partnerships for the resolution of joint problems. It identifies techniques that can be transferred to different regions, environments and collections, as well as practices suitable for investigation, adaptation and improvement of knowledge exchange and collection in ornithology. The authors take anthropologists and biologists who have been trained in, and largely continue to practise from, a western reductionist approach, along another path - one that presents ornithological knowledge from alternative perspectives, which can enrich the more common approaches to ecological and other studies as well as plans of management for conservation.

Hierdie praktiese, eenvoudige gids tot van die voëls in Suider-Afrika wat die meeste gesien word, is gemik op beginner- en selfs juniorv oëlkykers. Dit is meer toeganklik as ’n volwaardige veldgids, en baie nuttig met eenvoudige teks, duidelike illustrasies en foto’s van 300 van die streeks se voëls wat die maklikste te sien is.

Vir elke voël bied die boek:

- Eenvoudige teks met onder meer ‘vind dit;’ ‘identifiseer dit’ en ‘verstaan dit’

- Illustrasies en foto’s in volkleur

- ’n Verspreidingskaart

- Die gewone Afrikaanse naam, wetenskaplike naam en gewone name in Engels en ander Afrika-tale

- Gemiddelde grootte en besonderhede oor die nes

- Omraamde teks met bykomende inligting vir sommige voëls.

Hierdie kleurryke, tersaaklike boek met bondige aanwysings vir identifisering behoort groot byval te vind by Suider-Afrikaanse voëlkykers en buitelewe-entoesiaste.

A comprehensive guide to the freshwater fishes of the Okavango Delta and Chobe River, this book offers background information on the diverse aquatic habitats of the region and on fish feeding, breeding and survival strategies. It also provides useful hints for anglers. The species entries describe each fish in detail, with key ID points and information on habits and occurrence. Each account is accompanied by a colour illustration or photograph. The book concludes with information on how best to utilise and conserve the fishes of the delta system and Chobe River.

This is the only such guide to fishes of the region and will be invaluable to local and visiting fishermen, naturalists, conservationists, as well as the many tourists who visit this spectacular African paradise.

Marvel at the lives of hummingbirds with this collection of photographs and information by award-winning author and wildlife photographer Stan Tekiela. Their beauty captivates us. Their aerial acrobatics enchant us. Hummingbirds are beloved backyard visitors. They are dainty and elusive. A hummingbird sighting is a remarkable event, one worthy of remembering, cherishing, and sharing with others. Award-winning author, naturalist, and wildlife photographer Stan Tekiela believes that hummingbirds are fascinating and adorable birds. He spent more than 10 years traveling across the country to observe and photograph the hummingbird's various species, from ruby-throated to rufous. He documented every aspect of the hummingbird's life: major events such as migration and courtship, as well as everyday activities including feeding and sleeping. The result is a striking portrayal of these amazing animals in Hummingbirds. Stan's extraordinary photographs depict the backyard birds in a new, unique fashion. His fascinating text, drawn from detailed research and personal observations, provides information about every aspect of the hummingbirds' lives. Presented with headings and short paragraphs, the coffee-table book is pleasurable to browse and easy to read. "They are wondrous and beautiful," says Stan. "Watching them in action is almost magical." Unmatched by any other book on the market, Hummingbirds is a must-have for bird watchers, gardeners, and nature lovers.

The Peregrine, the fastest bird in the world, has made a remarkable recovery over the past 30 years. As the species re-establishes itself around the world it is becoming a familiar sight in towns and cities. This beautifully illustrated book is the first in-depth focus on the lives of Peregrines in towns and cities. In words and stunning photographs, Ed Drewitt reveals the latest information on Peregrine behavior including how they are adapting to, and taking advantage of, the urban environment. The book is also a how-to-guide, with information on finding peregrines, studying their diet, ringing individuals for research, putting up nest boxes and enabling people to learn more about them through public viewing points or web cameras. Ed also discusses what makes a Peregrine urban, their contemporary relationship with people, and helps dispel some myths and reveal some truths about this agile predator.

Sasol First Field Guide to Snakes & Other Reptiles of Southern Africa provides fascinating insight into the reptiles of the region.

Through full-colour photographs and distribution maps, and easy-to-read text, the beginner and budding naturalist will be able to identify the more common species found in southern Africa, discover where they live, and learn about their unique feeding and nesting habits.

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.

A lyrical celebration of birdsong, and the rekindling of a deep passion for nature. 'At this time of year, blackbirds never simply fly: instead, like reluctantly retired officers, they're always "on manoeuvres", and it's easy to see from their constant agitation that for them every flower bed is a bunker, every shed a redoubt and every hedge-bottom a potential place of ambush' As the world went silent in lockdown, something else happened; for the first time, many of us started becoming more aware of the spring sounds of the birds around us. Birdsong in a Time of Silence is a lyrical, uplifting reflection on these sounds and what they mean to us. From a portrait of the blackbird - most prominent and articulate of the early spring singers - to explorations of how birds sing, the science behind their choice of song and nest-sites, and the varied meanings that people have brought to and taken from birdsong, this book ultimately shows that natural history and human history cannot be separated. It is the story of a collective reawakening brought on by the strangest of springs.

Blennies are diverse group of bony fishes found around the globe. Most blennies are small and somewhat difficult to identify, so until recently these fish did not occupy the interests of many ichthyologists and even fewer ecologists. With nearly 900 species, blennies are important members of most coastal marine communities. This book should stimulate interest in blennies among a wider array of students, and marine biologists in general.

For most of us, the story of mammal evolution starts after the asteroid impact that killed the dinosaurs, but over the last 20 years scientists have uncovered remarkable fossils and new technologies that have upended this story. In Beasts Before Us, palaeontologist Elsa Panciroli charts the emergence of the mammal lineage, the Synapsida, beginning with their murky split from the reptiles in the Carboniferous period, more than three-hundred million years ago; these animals made the world theirs long before the rise of dinosaurs. Travelling forward into the Permian and then Triassic periods, we learn how our ancient mammal ancestors evolved from large, hairy beasts with fast metabolisms to exploit miniaturisation, the key to unlocking the traits that define mammals as we now know them. Elsa criss-crosses the globe to explore the sites where discoveries are being made and to meet the people who make them. In Scotland, she traverses the desert dunes of prehistoric Moray, where quarry workers unearthed the footprints of Permian synapsids; in South Africa, she introduces us to animals that gave scientists the first hints that our furry kin evolved from a lineage of egg-laying burrowers; and in China, new and astounding fossil finds reveal a suite of ancient mammals including gliders, shovel-pawed moles, and flat-tailed swimmers. This brilliantly written book radically reframes the narrative of our mammalian ancestors, providing a counterpoint to the stereotype of cowering Mesozoic mammals hiding away from their mighty dinosaur overlords. The earliest mammals weren't just precursors - they were pioneers.

This new edition - now with Nancy Jackson as a co-author - continues the themes of the first edition: the need to restore the biodiversity, ecosystem health, and ecosystem services provided by coastal landforms and habitats, especially in the light of climate change. The second edition reports on progress made on practices identified in the first edition, presents additional case studies, and addresses new and emerging issues. It analyzes the tradeoffs involved in restoring beaches and dunes - especially on developed coasts - the most effective approaches to use, and how stakeholders can play an active role. The concept of restoration is broad, and includes physical, ecological, economic, social, and ethical principles and ideals. The book will be valuable for coastal scientists, engineers, planners, and managers, as well as shorefront residents. It will also serve as a useful supplementary reference textbook in courses dealing with issues of coastal management and ecology.

Dramatic changes in the environment, including habitat degradation and climate change, have focused attention on how individuals and populations respond to a shifting biotic and abiotic landscape. A critical step toward meeting this goal is a clear understanding of the capacity of individuals to defend themselves against threats. Changes in water quality and temperature have direct and indirect effects on fishes. Defensive responses can occur at many levels, from cellular to behavioral actions. The authors in this volume have attempted to provide a general view of the current state of knowledge of fish defenses with respect to pathogens, parasites, and predators, and to point out gaps where further study is needed.

The animals loosely termed fish constitute more than half of all known vertebrate species. There are approximately 27,000 described living species of bony fishes (Euteleostomi = Osteichthyes), about 70 species of hagfishes and some 34 species of lampreys. Approximately 970 species are chondrichthyans, the sharks and their relatives, which were the subject of volume 3 in this series. It is perhaps because fishes live in a buoyant medium, whether it be fresh or sea water, that they show a diversity in body shapes that is unparalleled by other vertebrates. There is also a unique diversity in the modes of reproduction, whether by external or internal fertilization, and this, with the morphology and fine structure of the reproductive system and its components, is the subject of Part A. Part B deals with complementary topics: testes, sperm, and sperm competition; endocrinology of reproduction; pheromones and reproduction; copulatory structures: taxonomic overview and the potential for sexual selection; sexual selection: signaling and courtship; adaptation and evolution of reproductive mode in copulating cottoid species; fertilization; sex determination; parental care; reproduction in relation to conservation and exploitation of marine fishes; Cryopreservation of Gametes; Embryogenesis and Development; and Molecular Genetics of Development.

Histology is the discipline of biology that involves the microscopic examination of thin stained tissue sections in order to study their structure and correlate it with function. Histology can detect signs of disease not easily recognized on gross examination and can therefore be of interest in fish health supervision. The aim of this volume is to present a general reference guide providing an extensive set of histological images of fishes (about 40 species). This atlas is designed for use by students and researchers, biologists, ichthyologists, fish farmers, veterinarians working in fisheries and, of course, by comparative histologists who want to learn more about the fish world.

Featuring in-depth contributions from an international team of experts, the Biology of Turtles provides the first comprehensive review of the Testudinata. The book starts with the premise that the structure of turtles is particularly interesting and best understood within the context of their development, novelty, functional diversity, and evolution. It provides a robust discussion of the development and diversity of the shell. The book also explores the turtle body plan, its physiological and ecological consequences, evolutionary novelties, and their importance. The 200 illustrations found throughout the text enhance the chapters combine with color illustrations of the development of the shell, aspects of bone structural diversity, growth, and skeletochronology, to make this book an unparalleled resource. The volume concludes with a thoughtful discussion of the more than century long debate on the origins of turtles and the reasons why our understanding of the phylogenic origins and evolution of turtles remains tentative. Currently available books on this subject are woefully out of date and no overall review of Testudinata has been undertaken...until now. Each chapter represents a milestone in synthesizing a wide range of available information on specific subjects. The book's challenge: look both inside and outside the shell to build a clearer understanding of the diversity and evolution of turtles.

You don't need to travel to experience the joy of bird-watching: just take a look at the pigeons in your nearby park! With this fun, quirky, and scientifically correct field guide to the most common bird in most cities, you'll learn to see pigeons and doves (they're the same thing) with a bird-watcher's expertise, understanding their fascinating behaviour and appreciating nature right outside your window. Part field guide, part history, part ornithology primer, and altogether fun. Fact: Pigeons are amazing, and until recently, humans adored them. We've kept them as pets, held pigeon beauty contests, raced them, used them to carry messages over battlefields, harvested their poop to fertilize our crops-and cooked them in gourmet dishes. Now, with The Pocket Guide to Pigeon Watching, readers can rediscover the wonder. Equal parts illustrated field guide and quirky history, it covers behaviour: Why they coo; how they flock; how they preen, kiss, and mate (monogamously); and how they raise their young (on chunky pigeon milk). Anatomy and identification, from Birmingham Roller to the American Giant Runt to the Scandaroon. Birder issues, like what to do if you find a baby pigeon stranded in the park. And our lively shared story together, including all the things we've taught them-Ping-Pong, for example. "Rats with wings?" Think again. Pigeons coo, peck and nest all over the world, yet most of us treat them with indifference or disdain. So Rosemary Mosco, a bird-lover, science communicator, writer, and cartoonist (and co-author of The Atlas Obscura Explorer's Guide for the World's Most Adventurous Kid) is here to give the pigeon's image a makeover, and to help every town- and city-dweller get closer to nature by discovering the joys of birding through pigeon-watching.

With the decline in world fish stocks, our knowledge of fish reproduction has become fundamental. Reproduction is an essential commitment to future generation. It is also a continuous development process throughout ontogeny, requiring energetic, ecological, physiological, anatomical, biochemical and endrocrinological adaptations. The first chapters highlight important issues affecting fish normal ways of reproductive development; details would focus on species living in opposite environments, such as tropical and polar fishes; far related, as teleosts and cartilaginous fishes; and finally, fish having different reproductive strategies. Thereafter, since many fishes live in detrimental environments, mainly induced by the continuous input of xenobiotic substances into waterways, the authors found it highly pertinent to include this topic. Herein, the authors fix their attention on the factors and mechanisms that may well affect reproductionrelated hormonal systems as also on known consequences for fish living i

How did the elephant seal survive being driven to the brink of extinction in the nineteenth century? What variables determine the lifetime reproductive success of individual seals? How have elephant seals adapted to tolerate remarkable physiological extremes of nutrition, temperature, asphyxia, and pressure? Answering these questions and many more, this book is the result of the author's 50-year study of elephant seals. The chapters cover a broad range of topics including diving, feeding, migration and reproductive behavior, yielding fundamental information on general biological principles, the operation of natural selection, the evolution of social behavior, the formation of vocal dialects, colony development, and population changes over time. The book will be a valuable resource for graduate students and researchers of marine mammal behavior and reproductive life history as well as for amateur naturalists interested in these fascinating animals.

Fish lives in environments with a wide variety of chemical characteristics (fresh, brackish and seawater, acidic, alkaline, soft and hard waters). From an osmoregulatory point of view, fish have developed several mechanisms to live in these different environments. Fish osmoregulation has always attracted considerable attention and in the last years several studies have increased our knowledge of this physiological process. In this book several specialists have analyzed and reviewed the new data published regarding fish osmoregulation. The chapters present an integrative synthesis of the different aspects of this field focusing on osmoregulation in specific environments or situations, function of osmoregulatory organs, general mechanisms and endocrine control. In addition, interactions of osmoregulatory mechanisms with the immune system, diet and metabolism were also reviewed. New emerging techniques to study osmoregulation has also been analysed.