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The Comparative Embryology of Sponges

by Alexander V. Ereskovsky

One of the major questions in the evolution of animals is the transition from unicellular to multicellular organization, which resulted in the emergence of Metazoa through a hypothetical Urmetazoa. The Comparative Embryology of Sponges contains abundant original and literary data on comparative embryology and morphology of the Porifera (Sponges), a group of 'lower Metazoa'. On the basis of this material, original typization of the development of Sponges is given and the problems concerning origin and evolution of Porifera and their ontogenesis are discussed. A morphogenetic interpretation of the body plan development during embryogenesis, metamorphosis and asexual reproduction in Sponges is proposed. Special attention is given to the analysis of characteristic features of the ontogenesis in Porifera. The book pursues three primary goals: 1) generalization of all existing information on individual development of sponges, its classification and a statement according to taxonomical structure of Porifera; 2) revealing of heterogeneity of morphogenesis and peculiarities of ontogeneses in various clades of Porifera, and also their correlations with the organization, both adult sponges, and their larvae; 3) revealing homology of morphogeneses in both Porifera and Eumetazoa, testifying to the general evolutionary roots of multicellular animals, and peculiar features of sponges' morphogeneses and ontogenesis. This book will be of interest to embryologists, zoologists, morphologists and researchers in evolutionary biology.

The Complete Strain Trilogy: The Strain, The Fall, The Night Eternal (The\strain Trilogy Ser. #1)

by Guillermo del Toro

High-concept thrillers with a supernatural edge from world-famous director, whose films include Pan’s Labyrinth and Hellboy. Now a popular Amazon TV Show.

Computational Models of the Auditory System (Springer Handbook of Auditory Research #35)

by Ray Meddis Enrique A. A. Lopez-Poveda Richard R. R. Fay Arthur N. N. Popper

The Springer Handbook of Auditory Research presents a series of comprehensive and synthetic reviews of the fundamental topics in modern auditory research. The v- umes are aimed at all individuals with interests in hearing research including advanced graduate students, post-doctoral researchers, and clinical investigators. The volumes are intended to introduce new investigators to important aspects of hearing science and to help established investigators to better understand the fundamental theories and data in fields of hearing that they may not normally follow closely. Each volume presents a particular topic comprehensively, and each serves as a synthetic overview and guide to the literature. As such, the chapters present neither exhaustive data reviews nor original research that has not yet appeared in pe- reviewed journals. The volumes focus on topics that have developed a solid data and conceptual foundation rather than on those for which a literature is only beg- ning to develop. New research areas will be covered on a timely basis in the series as they begin to mature.

Consultations in Feline Internal Medicine, Volume 6 - E-Book

by John R. August

Completely revised and updated with 80 all-new chapters covering the most important information on current diagnostic, treatment, and preventive challenges facing feline practitioners today, Consultations in Feline Internal Medicine is an invaluable addition to every small animal clinician’s library. Full-color illustrations and expert contributions help you master and apply the latest advances in feline nutrition, emerging diseases, pet overpopulation, advanced imaging, and more with a comprehensive, clinically relevant approach. More than 100 worldwide leaders in small animal practice provide expert insight across the full spectrum of feline internal medicine. Extensive references make it easy to find additional information about specific topics most important to your practice. Current, evidence-based coverage reflects the latest findings and reports on pressing topics such as: Upper Respiratory Tract Aspergillosis Exocrine Pancreatic Insufficiency Diagnostic Imaging of the Ear Cardiac Blood Tests Urological Interventional Techniques A new section on feline nutrition highlights the impact of nutritional considerations on feline health. A dynamic full-color design, incorporating hundreds of NEW illustrations and tables, clarifies concepts and helps you interpret clinical data.

Courtney The Clownfish Fairy (Rainbow Magic Series (PDF) #91)

by Daisy Meadows Georgie Ripper

Rachel and Kirsty are visiting Kirsty's grandmother by the sea for their spring break. One morning they spot a very sparkly shell on the beach and it whisks them away to Fairyland! It's the occasion of the yearly Ocean Gala, where Shannon the Ocean Fairy plays her Magical Golden Conch Shell to ensure that the seas and oceans remain peaceful and ordered for the year ahead. But Jack Frost is there to ruin things for everyone! His pesky goblins break the Magical Golden Conch Shell into seven pieces as they try to steal it and the pieces are whisked away into the oceans of the human world. Queen Titania uses her magic to send seven magical sea creatures to guard the pieces of the shell, but the Ocean Fairies, and Rachel and Kirsty must get the pieces back before chaos takes over the oceans! Can they outwit Jack Frost and his goblins and make the oceans a safe and happy place for everyone once again...? In this final story in the series, Kirsty, Rachel and Courtney must find the final piece of the Magical Golden Conch Shell and return it to Shannon so that the oceans can be peaceful and harmonious once again!

Cows in Action 1: The Ter-moo-nators (Cows In Action #10)

by Steve Cole

Another hilarious, action-packed adventure from the Astro-nomically popular Steve Cole.Genius cow Professor McMoo and his trusty sidekicks, Pat and Bo, are the star agents of the C.I.A. - short for COWS IN ACTION! They travel through time, fighting evil bulls from the future and keeping history on the right track . . . When Professor McMoo invents a brilliant TIME MACHINE, he and his friends are soon attacked by a terrifying TER-MOO-NATOR - a deadly robo-cow who wants to mess with the past and change the future! And that's only the start of an incredible ADVENTURE that takes McMoo, Pat and Bo from a cow paradise in the future to the SCARY dungeons of King Henry VIII . . . It's time for action. COWS IN ACTIONPerfect for children ready to start reading chapter books by themselves.

Cows in Action 2: Cows In Action 2 (Cows In Action #7)

by Steve Cole

Another hilarious, action-packed adventure from the Astro-nomically popular Steve Cole.Genius cow Professor McMoo and his trusty sidekicks, Pat and Bo, are star agents of the C.I.A. - short for COWS IN ACTION! They travel through time, fighting evil bulls from the future and keeping history on the right track . . . In ANCIENT EGYPT, a monstrous moo-my has come to life and kicked the PHARAOH off his throne. Sent to investigate, the C.I.A agents face PERIL in the pyramids and nightmares on the Nile. Can they foil a TERRIFYING time-crime before the whole WORLD falls to the moo-my's curse?It's time for action. COWS IN ACTIONAnother UDDERLY hilarious title featuring the intrepid Professor McMoo and his team of time-travelling cows - perfect for children ready to start reading chapter books by themselves.

Cows in Action 3: The Roman Moo-stery (Cows In Action #9)

by Steve Cole

Another hilarious, action-packed adventure from the Astro-nomically popular Steve Cole.Genius cow Professor McMoo and his trusty sidekicks, Pat and Bo, are star agents of the C.I.A. - short for COWS IN ACTION! They travel through time, fighting evil bulls from the future and keeping history on the right track . . .The C.I.A. travel back to the ROMAN EMPIRE, where TER-MOO-NATORS are turning innocent bulls into WARRIORS! With all Rome at risk, Mc Moo, Pat and Bo battle GLADIATORS and race to the death in CHARIOTS, trying to solve a moo-stery that could wreck history FOR EVER!It's time for action. COWS IN ACTION.

Cows In Action 4: The Wild West Moo-nster (Cows In Action #12)

by Steve Cole

Genius cow Professor McMoo and his trusty sidekicks, Pat and Bo, are star agents of the C.I.A. - short for COWS IN ACTION! They travel through time, fighting evil bulls from the future and keeping history on the right track . . .It's a GOLD RUSH! The C.I.A. have been sent back to the Wild West of America where a TER-MOO-NATOR and his shifty sidekicks are cheating the locals out of all the land they own. But why? With local cattle going MISSING and a sinister MONSTER on the loose, can Professor McMoo and his team solve their WILDEST case yet?It's time for action. COWS IN ACTION.

A Critical Companion to Zoosemiotics: People, Paths, Ideas (Biosemiotics #5)

by Dario Martinelli

A critical companion of zoosemiotics is the first attempt to systematise the study of animal communication and signification through its most important and/or problematic terms and concepts, and its most representative scholars. It is a companion, in that it attempts to cover the entire range of key terms in the field, and it's critical, in that it aims not only to describe, but also to discuss, problematise and, in some cases, resolve, these terms.

Crows and Jays (Helm Identification Guides)

by Steve Madge Hilary Burn

120 species of crows, jays and their allies exist in the world today. Many are exceedingly beautiful in colour, grace and form, whereas others are black and somewhat sinister in appearance. In no other group of perching birds has evolution produced such a degree of variation, from the tiny Hume's Ground-Jay of the steppe-highlands of Tibet to the huge Thick-billed Raven of the mountains of Ethiopia. Some have had a long association with people and appear in tales of mythology and superstition, while others have been regarded as agricultural pests. The great majority, however, remain largely unknown, their only contact with humanity being the destruction of their specialised habitats. As a consequence, more than 20 species are now regarded as internationally endangered, some of which are very poorly known.The 30 superb colour plates by Hilary Burn in this book depict them all; each plate is accompanied by an informative caption page summarising the criteria required to identify the species, alongside colour world distribution maps. Some of these birds, bearing such evocative names as the Banggai Crow, Mesopotamian Crow and Flores Crow, have never been illustrated before.The authoritative text by Steve Madge treats each species in depth, summarising identification techniques and concisely reviewing all aspects of corvid behaviour, distribution, population and taxonomy. The author has had first-hand experience of most of the species during his travels throughout the world, travels in which he gradually became fascinated by this very special, but somewhat ignored, group of birds.Crows and Jays is a combination of scientifically accurate information and an identification guide, planned to give anyone, whether a birdwatcher or biologist, a greater understanding of the lives of these beautiful, yet very complex, group of birds. It will surely be a standard work of reference for many years to come.

Crystal (Dream Dogs #4)

by Aimee Harper

The fourth exciting adventure from the animal series set in a glamorous pooch parlour, for animal-crazy girls who love dogs and looking after them.

Cuckoos, Cowbirds and Other Cheats (Poyser Monographs)

by Nick Davies David Quinn

In this fascinating new book, Nick Davies describes the natural histories of these brood parasites and examines many of the exciting questions they raise about the evolution of cheating and the arms race between parasites and their prey. Brood parasites fill their armory with adaptations including exquisite egg mimicry, rapid laying, ejection of host eggs, murder of host young, chick mimicry and manipulative begging behavior: ploys shown by recent research to have evolved in response to host defense behavior or through competition among the parasites themselves. While many host species appear defenseless, accepting parasite eggs quite unlike their own, many are more discriminating against odd-looking eggs and some have evolved the ability to discriminate against odd-looking chicks as well. How is this arms race conducted? Will defenseless hosts develop defenses in time, or are there constraints which limit the evolution and perfection of host defenses? And why are so few species obliged only to lay eggs in host nests? Have host defenses limited the success of brood parasitism, or is it in fact much more common than we suspect, but occurring mainly when birds parasitize the nest of their own kind? All of these puzzles are examined in descriptions of the natural history of each of the groups of parasites in turn. Here is a book with wide appeal, both to amateur naturalists fascinated by this most singular and macabre of behaviors and by ornithologists and ecologists interested in the evolution of ecology and behavior. The story takes us from the classic field work earlier this century by pioneer ornithologists such as Edgar Chance, Stuart Baker, Herbert Friedmann and others, through to the recent experimental field work and molecular techniques of today's leading scientists. We visit brood parasites in Europe, Asia, Japan, Africa, Australasia, and North and South America, to look at some of the worlds most interesting birds and some of biology's most interesting questions, many of which still beg answers from ornithologists in the future. Brilliant illustrations by David Quinn illuminate the species discussed, showing many behaviors never before illustrated and conveying the thrill of watching these astonishing birds in the wild.

Cuckoos, Cowbirds and Other Cheats (Poyser Monographs #60)

by Nick Davies

In this fascinating new book, Nick Davies describes the natural histories of these brood parasites and examines many of the exciting questions they raise about the evolution of cheating and the arms race between parasites and their prey. Brood parasites fill their armory with adaptations including exquisite egg mimicry, rapid laying, ejection of host eggs, murder of host young, chick mimicry and manipulative begging behavior: ploys shown by recent research to have evolved in response to host defense behavior or through competition among the parasites themselves. While many host species appear defenseless, accepting parasite eggs quite unlike their own, many are more discriminating against odd-looking eggs and some have evolved the ability to discriminate against odd-looking chicks as well. How is this arms race conducted? Will defenseless hosts develop defenses in time, or are there constraints which limit the evolution and perfection of host defenses? And why are so few species obliged only to lay eggs in host nests? Have host defenses limited the success of brood parasitism, or is it in fact much more common than we suspect, but occurring mainly when birds parasitize the nest of their own kind? All of these puzzles are examined in descriptions of the natural history of each of the groups of parasites in turn. Here is a book with wide appeal, both to amateur naturalists fascinated by this most singular and macabre of behaviors and by ornithologists and ecologists interested in the evolution of ecology and behavior. The story takes us from the classic field work earlier this century by pioneer ornithologists such as Edgar Chance, Stuart Baker, Herbert Friedmann and others, through to the recent experimental field work and molecular techniques of today's leading scientists. We visit brood parasites in Europe, Asia, Japan, Africa, Australasia, and North and South America, to look at some of the worlds most interesting birds and some of biology's most interesting questions, many of which still beg answers from ornithologists in the future. Brilliant illustrations by David Quinn illuminate the species discussed, showing many behaviors never before illustrated and conveying the thrill of watching these astonishing birds in the wild.

Current Concepts in Forensic Entomology

by Jens Amendt M. Lee Goff Carlo P. Campobasso Martin Grassberger

Forensic Entomology deals with the use of insects and other arthropods in medico legal investigations. We are sure that many people know this or a similar definition, maybe even already read a scientific or popular book dealing with this topic. So, do we really need another book on Forensic Entomology? The answer is 13, 29, 31, 38, and 61. These are not some golden bingo numbers, but an excerpt of the increasing amount of annual publications in the current decade dealing with Forensic Entomology. Comparing them with 89 articles which were published d- ing the 1990s it illustrates the growing interest in this very special intersection of Forensic Science and Entomology and clearly underlines the statement: Yes, we need this book because Forensic Entomology is on the move with so many new things happening every year. One of the most attractive features of Forensic Entomology is that it is multid- ciplinary. There is almost no branch in natural science which cannot find its field of activity here. The chapters included in this book highlight this variety of researches and would like to give the impetus for future work, improving the dev- opment of Forensic Entomology, which is clearly needed by the scientific com- nity. On its way to the courtrooms of the world this discipline needs a sound and serious scientific background to receive the acceptance it deserves.

Current Ornithology Volume 17 (Current Ornithology #17)

by Charles F. Thompson

Current Ornithology publishes authoritative, up-to-date, scholarly reviews of topics selected from the full range of current research in avian biology. Topics cover the spectrum from the molecular level of organization to population biology and community ecology. The series seeks especially to review (1) fields in which an abundant recent literature will benefit from synthesis and organization, or (2) newly emerging fields that are gaining recognition as the result of recent discoveries or shifts in perspective, or (3) fields in which students of vertebrates may benefit from comparisons of birds with other classes. All chapters are invited, and authors are chosen for their leadership in the subjects under review.

David Attenborough’s First Life: A Journey Back In Time With Matt Kaplan

by Matt Kaplan

The epic story of the beginning of life on Earth from the much loved and respected naturalist, writer and broadcaster, Sir David Attenborough.

Dear Hound

by Jill Murphy

Alfie the deerhound is a large grey puppy. He loves his boy Charlie, and cheese and he's very good at digging holes. But poor Alfie has got lost and he's scared - of thunderstorms and being hungry and never seeing Charlie again . . .Meanwhile, Charlie doesn't know what to do - but one thing is for sure: he'll never stop looking for his dear hound. Can Alfie ever find his way back to Charlie - and his great big squashy beanbag in the kitchen?

Dear Hound

by Jill Murphy

Alfie's your average deer hound puppy-curious about the world around him, happy to chase the cat and laze around in his favorite beanbag bed, and very loyal to his boy, Charlie. So he's extremely upset when Charlie goes away and leaves him with a sitter-upset enough that he escapes into the woods. With the help of some friendly foxes, Alfie learns to live in the wild, but he never stops thinking of Charlie and trying to find his way home. And Charlie, of course, never stops thinking of Alfie, either. Will these two be able to find each other before it's too late? Featuring irresistible black-and-white line drawings on every spread, Dear Hound is both an accessible, heartwarming story and the perfect choice for readers graduating out of early chapter books.

Der Superorganismus: Der Erfolg von Ameisen, Bienen, Wespen und Termiten

by Bert Hölldobler Edward Wilson

Knapp 20 Jahre nach dem Pulitzer Preis für ihr Werk „The Ants" präsentieren Bert Hölldobler und Edward O. Wilson einem breiten Publikum, was die Biologen in den vergangenen zwei Jahrzehnten über die Organisationsformen sozial lebender Insekten herausgefunden haben. „Superorganismen" werden Kolonien sozialer Insekten genannt, die sich durch altruistische Zusammenarbeit sowie komplexe Kommunikation und Arbeitsteilung auszeichnen. Ihr Studium erhellt viele Phänomene und Konzepte von allgemeiner Bedeutung in der Biologie.Das Buch zeigt den Weg der Evolution der „Superorganismen". Auf diesem Wissen aufbauend werfen die Autoren einen Blick auf einen der bedeutendsten Übergänge des Lebens: vom Molekül über die Zelle zum Organismus und darüberhinaus zum Superorganismus, zur Population und schließlich zum Ökosystem.Dieser Softcovernachdruck hält das nachgefragte Buch weiterhin verfügbar.

Der Superorganismus: Der Erfolg von Ameisen, Bienen, Wespen und Termiten

by Bert Hölldobler Edward Wilson

Knapp 20 Jahre nach dem Pulitzer Preis für „The Ants" präsentiert das weltberühmte Autorenteam, was Biologen in den vergangenen zwei Jahrzehnten über sozial lebende Insekten herausgefunden haben. Superorganismen sind Insektenkolonien, die sich durch altruistische Zusammenarbeit und komplexe Kommunikation auszeichnen. Die Autoren stellen die Evolution der Superorganismen dar und betrachten aufbauend darauf die bedeutenden Übergänge vom Molekül über die Zelle zum Organismus, zum Superorganismus, zur Population und schließlich zum Ökosystem.

Developmental Plasticity of Inhibitory Circuitry

by Sarah L. Pallas

Neuroscience has long been focused on understanding neural plasticity in both development and adulthood. Experimental work in this area has focused almost entirely on plasticity at excitatory synapses. A growing body of evidence suggests that plasticity at inhibitory GABAergic and glycinergic synapses is of critical importance during both development and aging. The book brings together the work of researchers investigating inhibitory plasticity at many levels of analysis and in several different preparations. This topic is of wide relevance across a number of different areas of research in neuroscience and neurology. Medical problems such as epilepsy, mental illness, drug abuse, and movement disorders can result from malfunctioning inhibitory circuits. Further, the maturation of inhibitory circuits may trigger the onset of critical periods of neural circuit plasticity, raising the possibility that such plastici periods could be reactivated for medical benefit by manipulating inhibitory circuitry.

Diagnostic Techniques in Equine Medicine E-Book

by Dr Tim J. Brazil, BVSc PhD CertEM Int Med Deceim Mr BVSc PhD Mrcvs, Dr. Tim J. Brazi Mrcvs

Whether to confirm a diagnosis or to narrow down a list of differentials, a wide range of tests, procedures and methods of investigation is available to veterinarians in equine practice. However, practical information about particular techniques is often difficult to find in standard textbooks of equine medicine and surgery. Diagnostic Techniques in Equine Medicine provides the practical information required to be able to undertake all these procedures. This second edition is organised by techniques per organ system, has been updated thoroughly and includes new material. Clear step-by-step descriptions are illustrated with photographs and line drawings Walks you through conducting a thorough examination with observations on signs and symptoms User-friendly tables illustrate how different techniques can be applied to narrow down a list of differential diagnoses Helpful appendices demonstrate applications of different techniques to assist in defining a diagnosis An increased focus on ultrasound techniques General up-date of current information with new material included Focus on ultrasound image techniques which are used much more in veterinary practices now

A Dictionary of Birds (Poyser Monographs #108)

by Bruce Campbell Elizabeth Lack

A Dictionary of Birds enlists contributions from over 280 ornithologists and other specialists from around the world. Major, authoritative articles cover the field of modern ornithology and related subjects, many of them running to several thousand words. In addition there are articles on all the bird families, almost all of which are illustrated by a representative species. There are also numerous short entries defining special terms, application of names, etc. The total gives a text of over 800,000 words, supported by more than 500 photographs, drawings and diagrams. The photographs have been selected under the guidance of Eric Hosking to illustrate different activities of birds, and Robert Gillmor has assembled a collection of over 200 drawings of birds, almost all of which were specially drawn for the Dictionary.Compiled for the British Ornithologists' Union, this new work is in line of succession from Newton's A Dictionary of Birds of 1896 and Landsborough Thomson's A New Dictionary of Birds published in 1964 (2nd impression 1965) and now long out of print. This new dictionary, encyclopaedic in treatment, is destined to be a major reference in any ornithologist's library; and its editors and contributors, most of whom gave their time and knowledge freely, have earned the thanks and acclaim of users for many years to come. Frances James, President of the American Ornithologists' Union, writes in her preface of "the role the dictionary will play in fostering communications among nations. For students it will serve as an entrance to the present status of the field. For scientists it will serve as a research tool and a bridge between disciplines."

Diel Vertical Migration of Zooplankton in Lakes and Oceans: causal explanations and adaptive significances

by Joop Ringelberg

Whatever theory may be advanced to explain diurnal migration, the underlying reactions involved must be demonstrated conc- sively in the laboratory before the explanation can be ?nally accepted George L. Clarke 1933 p. 434 In oceans and lakes, zooplankton often make diel vertical migrations (DVM), descending at dawn and coming up again in late afternoon and evening. The small animals cover distances of 10–40 m in lakes or even a few hundred metres in the open oceans. Although not as spectacular as migrations of birds or the massive movements of large mammals over the African savannas, the numbers involved are very large and the biomass exceed the bulk of the African herds. For example, in the Antarctic oceans swarms of “Krill” may cover kilometres across, with thousands of individuals per cubic metre. These Euphausiids are food for whales, the most bulky animals on earth. Zooplankton are key species in the pelagic food web, intermediary between algae and ?sh, and thus essential for the functioning of the pelagic community. Prey for many, they have evolved diverse strategies of survival and DVM is the most imp- tant one. Most ?sh are visually hunting predators and need a high light intensity to detect the often transparent animals. By moving down, the well-lit surface layers are avoided but they have to come up again at night to feed on algae.

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Showing 5,701 through 5,725 of 17,833 results