Sasol Eerste Veldgids tot Slange & Ander Reptiele van Suider-Afrika bied aan die jong leser 'n fassinerende blik op die reptiele van die streek. Met behulp van volkleur fotoÆs en verspreidings kaarte, asook maklik leesbare teks, sal die jong volwassene en ontluikende natuur liefhebber die algemene reptielspesies in Suider-Afrika kan identifiseer.

This is a reprint of the first revision of this classic. Originally published in 1953 as Fishery Bulletin #74 for the US Department of the Interior, Fish and Wildlife Service. The "Gulf of Maine" is defined as an area from the Nantucket Shoals and Cape Cod in the west to Cape Sable in the east. The aim of the book was to provide a handbook for the easy identification of the fishes that occur in the Gulf of Maine, with summaries of what is known about the distribution and relative abundance together with information on the life history of each species. The authors used the 150-fathom boundary as the arbitrary offshore boundary as this will exclude almost all "deep-sea" fishes, which are numerous in the basin of the open Atlantic. Combining information gleaned from the literature as well as surveys from a large number of cruises, the volume covers the Cyclostomes, cartilaginous fishes, torpedoes, skates and rays and the bony fishes. The descriptions are as non-technical as is compatible with scientific accuracy and are limited to external features that will aid in identification in the field.

"Homeostasis and Toxicology of Non-Essential Metals" synthesizes the explosion of new information on the molecular, cellular, and organismal handling of metals in fish in the past 15 years. These elements are no longer viewed by fish physiologists as "heavy metals" that kill fish by suffocation, but rather as interesting moieties that enter and leave fish by specific pathways, which are subject to physiological regulation. The metals featured in this volume are those about which there has been most public and scientific concern, and therefore are those most widely studied by fish researchers. Metals such as Ag, Al, Cd, Pb, Hg, As, Sr, and U have no known nutritive function in fish at present, but are toxic at fairly low levels.

The companion volume, "Homeostasis and Toxicology of Essential Metals, " Volume 31A, covers metals that are either proven to be or are strongly suspected to be essential in trace amounts, yet are toxic in higher doses. Metals such as Cu, Zn, Fe, Ni, Co, Se, Mo and Cr. In addition, three chapters in Volumes 31A and 31B on Basic Principles (Chapter 1, 31A), Field Studies and Ecological Integration (Chapter 9, 31A) and Modeling the Physiology and Toxicology of Metals (Chapter 9, 31B) act as integrative summaries and make these two volumes a vital set for readers.
All major essential metals of interest are covered in metal-specific chaptersEach metal-specific chapter is written by fish physiologists/toxicologists who are recognized authorities for that metalA common format is featured throughout this two volume edition

"Homeostasis and Toxicology of Essential Metals" synthesizes the explosion of new information on the molecular, cellular, and organismal handling of metals in fish in the past 15 years. These elements are no longer viewed by fish physiologists as "heavy metals" that kill fish by suffocation, but rather as interesting moieties that enter and leave fish by specific pathways, which are subject to physiological regulation. The metals featured in this volume are those about which there has been most public and scientific concern, and therefore are those most widely studied by fish researchers. Metals such as Cu, Zn, Fe, Ni, Co, Se, Mo and Cr are either proven to be or are strongly suspected to be essential in trace amounts, yet are toxic in higher doses.

The companion volume, "Homeostasis and Toxicology of Non-Essential Metals, " Volume 31B, covers metals that have no known nutritive function in fish at present, but which are toxic at fairly low levels, such as Ag, Al, Cd, Pb, Hg, As, Sr, and U. In addition, three chapters in Volumes 31A and 31B on Basic Principles (Chapter 1, 31A), Field Studies and Ecological Integration (Chapter 9, 31A) and Modeling the Physiology and Toxicology of Metals (Chapter 9, 31B) act as integrative summaries and make these two volumes a vital set for readers.
All major essential metals of interest are covered in metal-specific chaptersEach metal-specific chapter is written by fish physiologists/toxicologists who are recognized authorities for that metalA common format is featured throughout this two volume edition

Rock iguanas of the West Indies are considered to be the most endangered group of lizards in the world. They are a flagship species in the Caribbean and on most islands are the largest native land animals. Unfortunately, human encroachment and introduced animals have brought this species to the brink of extinction. "Cyclura: Natural History, Husbandry, and Conservation of the West Indian Iguanas" is the first book to combine the natural history and captive husbandry of these remarkable reptiles, while at the same time outlining the problems researchers and conservationists are battling to save these beautiful, iconic animals of the Caribbean islands.

Authors Jeffrey Lemm and Allison Alberts have been studying West Indian iguanas for nearly 20 years in the wild and in captivity; their experiences with wild iguanas and their exquisite photos of these charismatic lizards in the wild make this book a must-have for reptile researchers, academics and enthusiasts, as well as anyone interested in nature and conservation.
Includes chapters with contributions by leading experts on rock iguana taxonomy, nutrition, and diseases Features color photos of all taxa, including habitat and captive shotsProvides easily understandable and usable information gleaned from experience and hands-on reptile research

"Oryzias latipes," known as medaka, is a model organism from East Asia. Breeding of this small, egg-laying freshwater teleost fish has long been popular among hobbyists in Japan. Now, as biological science has entered the genome era, the medaka provides significant advantages that make it one of the most valuable vertebrate models: a large collection of spontaneous mutants collected over a century, the presence of highly polymorphic inbred lines established over decades, and a recently completed genome sequence. This book is the first comprehensive monograph to cover a variety of medaka research. It opens with a historical view of medaka, followed by a series of research topics in the four major areas where the medaka is increasingly important: genomics, genetics, and resources; organogenesis and disease models; germ cells, sex determination, and reproduction; and evolution. Readers will find state-of-the-art information on medaka genetics and genomics such as the first isolation of active transposons in vertebrates, the influence of chromatin structure on sequence variation, fine QTL analysis, and versatile mutants as human disease models.

This collection of reviews will be of considerable interests to biologists and MDs working on any aspect of cardiovascular function. With state-of-the-art reviews written by competent experts in the field, the content is also of interest for MSc and PhD students in most fields of cardiovascular physiology.

This book offers a comprehensive review of current systems for fish protection and downstream migration. It offers the first systematic description of the currently available technologies for fish protection at hydropower intakes, including accurate and timely data collected by the authors and other researchers. It describes how to design and test them in agreement with the guidelines established from the EU Water Framework Directive. The book includes important information about fish biology, with a special focus on swimming and migration mechanisms. It offers a robust bridge between concepts in applied ecology and civil hydraulic engineering, thus providing biologists and hydraulic engineers with an authoritative reference guide to both the theory and practice of fish protection. It is also of interest for planners, public authorities as well as environmental consultants

This volume comprehensively covers new technologies and methodologies that have appeared for the study of mouse development.

This volume is the first of a 2 part update of volume 225, "Guide to Techniques in Mouse Development," edited by P.M. Wassarman and M.L. DePamphilis and published in 1993.

Comprehensively covers new techniques for the cryopreservation of gametes and embryos, production of transgenic and null (knockout) animals (use of ES cells), generation of conditional/inducible mutant animals, use of gene-trap mutagenesis, analysis of allele-specific expression, use of new reporter constructs, humanizing of transgenic animals, transcript profiling of mouse development, imaging of mouse development, and rederivation of animals and use of mouse genomics.

This series of volumes represents a comprehensive and integrated treatment of reproduction in vertebrates from fishes of all sorts through mammals. It is designed to provide a readable, coordinated description of reproductive basics in each group of vertebrates as well as an introduction to the latest trends in reproductive research and our understanding of reproductive events. Whereas each chapter and each volume is intended to stand alone as a review of that topic or vertebrate group, respectively, the volumes are prepared so as to provide a thorough topical treatment across the vertebrates. Terminology has been standardized across the volumes to reduce confusion where multiple names exist in the literature, and a comprehensive glossary of these terms and their alternative names is provided.
*A complete, essential and up to date reference for research scientists working on vertebrate hormones and reproduction - and on animlals as models in human reproductive research.
*Covers the endocrinology, neuroendocrinology, physiology, behaviour and anatomy of vertebrate reproduction.
*Structured coverage of the major themes for all five vertebrate groups allows a consistent treatment for all.
*Special chapters elaborate on features specific to individual vertebrate groups and to comparative aspects, similarities and differences between them.

This cutting-edge resource includes up-to-date information on zebrafish physiology and the tools used to study it, not only as a model species for studies of other vertebrates but with application for studies of human disease and aquatic toxicology. The utility of zebrafish for physiological research is based on several key features including i) a "fully" sequenced genome, ii) rapid ( 3 month) generation times), iii) their capacity to produce large numbers of externally fertilized eggs, iv) optical transparency of embryos and larvae, and v) the applicability of reverse and forward genetics to assess gene function. Gene knockdown in embryos and the production of transgenic strains are now standard techniques being used to assess physiology. This book will be of keen interest not only to the typical readers of Fish Physiology but also to biomedical researchers, toxicologists and developmental biologists.

Key Features
* Integrates and synthesizes the biology of the zebrafish under one cover
* Features contributions from the leading researchers in their fields
* Reaches a wider audience of researchers and biologists with its broad inclusion of subjects relating to zebrafish physiology

Guide to Techniques in Mouse Development, Part B, is an authoritative guide to different methods used in enzymology, focusing on investigating mouse development using technological advances. The text provides information regarding the principles of the methods in mouse development, and it offers readers reliable experimental protocols and recipes described comprehensively by leaders in the field of enzymology. The text is divided into three sections and organized into 25 chapters. Below are several concepts covered by the text: Lentivirus transgenesis o Germline modification using mouse stem cells Electroporation Applications of transposons in mouse genetics Functional genomics using transposon systems The use of DNA transposons in detecting cancer genes in mice Recombination, conditional mutagenesis and induction of tamoxifen Genetic fate mapping using recombinases Genetic screens mouse ES cells Gene trap mutagenesis Mouse mutagenesis Self- renewal and pluripotency Transgenic RNAi applications Gene knockdowns Tetracycline-controlled transcription Gene expression profiling of mouse embryos The book is a comprehensive guide for students and professionals in genetics, cytology and molecular biology, who will find this book invaluable for their learning and practice.

Written with the non-specialist in mind, this guide is a must-have for flower lovers, hikers, tour guides and tourists – anyone interested in identifying the wild flowers that grace the Cape Peninsula.

Wild Flowers of the Cape Peninsula covers the most remarkable and commonly seen wild flowers of Table Mountain, Silvermine and Cape Point. The book was originally published as Common Wild Flowers of Table Mountain in 2007, then revised in 2013 to include the flowers of Silvermine.

This new edition offers:

• 360 (previously 208) of the region’s most remarkable and commonly seen wild flowers
• Clear photographs of all featured flowers and concise, informative text
• Flowers grouped according to colour, to help with quick ID
• Walking routes in the Peninsula’s famed reserves, plotted on 3 clear maps
• Illustrated glossary of terms

Evolutionary biomechanics is the study of evolution through the analysis of biomechanical systems. Its unique advantage is the precision with which physical constraints and performance can be predicted from first principles. Instead of reviewing the entire breadth of the biomechanical literature, a few key examples are explored in depth as vehicles for discussing fundamental concepts, analytical techniques, and evolutionary theory. Each chapter develops a conceptual theme, developing the underlying theory and techniques required for analyses in evolutionary biomechanics. Examples from terrestrial biomechanics, metabolic scaling, and bird flight are used to analyse how physics constrains the design space that natural selection is free to explore, and how adaptive evolution finds solutions to the trade-offs between multiple complex conflicting performance objectives. Evolutionary Biomechanics is suitable for graduate level students and professional researchers in the fields of biomechanics, physiology, evolutionary biology and palaeontology. It will also be of relevance and use to researchers in the physical sciences and engineering.

Birds have colonized almost every terrestrial habitat on the planet - from the poles to the tropics, and from deserts to high mountain tops. Ecological and Environmental Physiology of Birds focuses on our current understanding of the unique physiological characteristics of birds that are of particular interest to ornithologists, but also have a wider biological relevance.
An introductory chapter covers the basic avian body plan and their still-enigmatic evolutionary history. The focus then shifts to a consideration of the essential components of that most fundamental of avian attributes: the ability to fly. The emphasis here is on feather evolution and development, flight energetics and aerodynamics, migration, and as a counterpoint, the curious secondary evolution of flightlessness that has occurred in several lineages. This sets the stage for subsequent chapters, which present specific physiological topics within a strongly ecological and environmental framework. These include gas exchange, thermal and osmotic balance, 'classical' life history parameters (male and female reproductive costs, parental care and investment in offspring, and fecundity versus longevity tradeoffs), feeding and digestive physiology, adaptations to challenging environments (high altitude, deserts, marine habitats, cold), and neural specializations (notably those important in foraging, long-distance navigation, and song production).
Throughout the book classical studies are integrated with the latest research findings. Numerous important and intriguing questions await further work, and the book concludes with a discussion of methods (emphasizing cutting-edge technology), approaches, and future research directions.

From the New York Times bestselling author of The Genius of Birds, a radical investigation into the bird way of being, and the recent scientific research that is dramatically shifting our understanding of birds -- how they live and how they think. "There is the mammal way and there is the bird way." But the bird way is much more than a unique pattern of brain wiring, and lately, scientists have taken a new look at bird behaviors they have, for years, dismissed as anomalies or mysteries -- What they are finding is upending the traditional view of how birds conduct their lives, how they communicate, forage, court, breed, survive. They are also revealing the remarkable intelligence underlying these activities, abilities we once considered uniquely our own: deception, manipulation, cheating, kidnapping, infanticide, but also ingenious communication between species, cooperation, collaboration, altruism, culture, and play. Some of these extraordinary behaviors are biological conundrums that seem to push the edges of, well, birdness: a mother bird that kills her own infant sons, and another that selflessly tends to the young of other birds as if they were her own; a bird that collaborates in an extraordinary way with one species-ours-but parasitizes another in gruesome fashion; birds that give gifts and birds that steal; birds that dance or drum, that paint their creations or paint themselves; birds that build walls of sound to keep out intruders and birds that summon playmates with a special call-and may hold the secret to our own penchant for playfulness and the evolution of laughter. Drawing on personal observations, the latest science, and her bird-related travel around the world, from the tropical rainforests of eastern Australia and the remote woodlands of northern Japan, to the rolling hills of lower Austria and the islands of Alaska's Kachemak Bay, Jennifer Ackerman shows there is clearly no single bird way of being. In every respect, in plumage, form, song, flight, lifestyle, niche, and behavior, birds vary. It is what we love about them. As E.O Wilson once said, when you have seen one bird, you have not seen them all.

Much has been written about dolphins and whales, and excellent books exist especially on the charismatic bottlenose dolphins; and killer, humpback, and sperm whales. But detailed studies have been carried out on a handful of other species, and this book summarizes our state of knowledge of a little dolphin the southern hemisphere dusky, and compares its behavioral strategies in different environs. The editors, Bernd and Mel Wursig, began studying duskies in Patagonia Argentina in 1972. Although they have been to many parts of the Earth since then -- including work on Amazon and Yangtze river dolphins, Hawai i for the delicate lovely spinner dolphin, the Arctic for bowhead and gray whale work, and bottlenose dolphins in several milieus -- they have always returned to their first love of unraveling the social patterns and life strategies of duskies that exist in small groups in semi-enclosed bays and as herds of well over one thousand in the open ocean. This book documents the latest research, from their feeding patterns to their acrobatic skills. It is full of scientific facts, with a sense of poetry and wonder of the unknown.
- Only book fully devoted to the southern hemisphere "dusky" dolphin
- Heavily illustrated with charts, figures, tables, and all color photos
- Written by a cadre of experts intimately familiar with dolphin field work
- Written in an accurate yet accessible style for the scientist and natural historian alike"

Baring-Gould's eye-opening history of lycanthropy - the werewolf curse - delves deep into the lore, unearthing various historical cases, several of which date back to Ancient or Medieval times. The concept of a human transforming into a wolf has ancient origins, with several Greek and Roman authors such as Virgil, Ovid, Herodotus and Pliny raising the concept in their poetry and other writings. Rumors of sorcery that could induce a human to change was attributed to magicians in far off places such as Scythia, and such beliefs were widely held. Later, the Norse civilization's mythology introduced lycanthropy and other kinds of transformation. Humans as wolves, bears, birds and other beasts were said to appear in the northern wilds; the Norse God Odin took the form of a bird on regular occasions. Berserker warriors would clad themselves in wolf skins; Bj rn, son of Ulfheoin, was famed for his ability to shift between human and wolf forms.

The study of fish neuroendocrinology has had a significant impact on our general understanding of the functional roles and evolution of a variety of neurochemical messengers and systems. Not only do fish possess unique neuroendocrine features, they have also been and remain an important vertebrate models for the discovery of new neuropeptides. In the last fifty years, neuroendocrinologists have documented a complex and seemingly infinite number of interactions between hormones and nerve structures. Gradually emerging from this knowledge is an understanding of the specific neurohormonal pathways and the messengers responsible for maintaining homeostasis in an aquatic environment and for regulating the functional systems that allow for the highly diverse life histories and reproductive tactics of fish
Despite its recent growth, breadth and unique attributes, there is no single text covering the discipline of fish neuroendocrinology. In fact, other than a few mammalian neuroendocrinology textbooks, there is a serious lack of texts in comparative neuroendocrinology. Currently, information on the anatomical organization and function of the various neuroendocrine systems in fish is only available in original research papers and reviews.
By providing a current and comprehensive volume that highlights the specific properties of fish neuroendocrinology, this book will go beyond being the only reference text for fish neuroendocrinologists and will also serve comparative physiologists, endocrinologists, neuroanatomists and behaviourists interested in understanding the reciprocal actions between the nervous and endocrine systems.

* Highlights the specific properties of fish neuroendocrinology
* Emphasises the range and variety of interactions between neurobiology and endocrinology
* Discuses both anatomical and functional aspects of the Neuroendocrine system
* Also serves comparative physiologists, endocrinologists, neuroanatomists and behaviourists interested in understanding the reciprocal actions between the nervous and endocrine systems