The Emergence of Whales

The Emergence of Whales

The objective of this volume is to provide a snapshot of this explosion. The volume paints the scene with a broad brush.

Author: J.G.M. Thewissen

Publisher: Springer Science & Business Media

ISBN: 0306458535

Category: Science

Page: 498

View: 822

Research in whale origins is now in an explosive phase, with a cascade of discoveries adding to our understanding of the evolutionary pattern and a suite of new techniques being applied to address new questions. The objective of this volume is to provide a snapshot of this explosion. The volume paints the scene with a broad brush. Taken together the chapters clearly indicate that cetacean origins is a field that is dynamic, multidisciplinary, and that the end of the explosive phase is not in sight.
Categories: Science

The Emergence of Whales

The Emergence of Whales

Evolutionary Patterns in the Origin of Cetacea J.G.M. Thewissen. Preface Zoologists have long known that whales, dolphins, and porpoises are mammals: In the fourth century B.C., Aristotle pointed out that whales breathe air, have hair, ...

Author: J.G.M. Thewissen

Publisher: Springer Science & Business Media

ISBN: 9781489901590

Category: Science

Page: 477

View: 211

Research in whale origins is now in an explosive phase, with a cascade of discoveries adding to our understanding of the evolutionary pattern and a suite of new techniques being applied to address new questions. The objective of this volume is to provide a snapshot of this explosion. The volume paints the scene with a broad brush. Taken together the chapters clearly indicate that cetacean origins is a field that is dynamic, multidisciplinary, and that the end of the explosive phase is not in sight.
Categories: Science

The Walking Whales

The Walking Whales

In the book's final chapter, Thewissen argues for approaching whale evolution with the most powerful tools we have and for combining all the fields of science in pursuit of knowledge.

Author: J. G. M. Hans Thewissen

Publisher: Univ of California Press

ISBN: 9780520959415

Category: Science

Page: 248

View: 219

Hans Thewissen, a leading researcher in the field of whale paleontology and anatomy, gives a sweeping first-person account of the discoveries that brought to light the early fossil record of whales. As evidenced in the record, whales evolved from herbivorous forest-dwelling ancestors that resembled tiny deer to carnivorous monsters stalking lakes and rivers and to serpentlike denizens of the coast. Thewissen reports on his discoveries in the wilds of India and Pakistan, weaving a narrative that reveals the day-to-day adventures of fossil collection, enriching it with local flavors from South Asian culture and society. The reader senses the excitement of the digs as well as the rigors faced by scientific researchers, for whom each new insight gives rise to even more questions, and for whom at times the logistics of just staying alive may trump all science. In his search for an understanding of how modern whales live their lives, Thewissen also journeys to Japan and Alaska to study whales and wild dolphins. He finds answers to his questions about fossils by studying the anatomy of otters and porpoises and examining whale embryos under the microscope. In the book's final chapter, Thewissen argues for approaching whale evolution with the most powerful tools we have and for combining all the fields of science in pursuit of knowledge.
Categories: Science

The Natural History of Whales Dolphins

The Natural History of Whales   Dolphins

A brief sequence on ecology and the role of the environment on society.

Author: Peter G. H. Evans

Publisher:

ISBN: UCSC:32106011751283

Category: Cetacea

Page: 384

View: 404

A brief sequence on ecology and the role of the environment on society.
Categories: Cetacea

North Atlantic Right Whales

North Atlantic Right Whales

Deciphering whale origins with molecules and fossils. Trends in Ecology and Evolution 16:562–570. 7. Thewissen, JGM, LN Cooper, JC George, and S Bajpai. 2009. From land to water: the origin of whales, dolphins and porpoises.

Author: David W. Laist

Publisher: JHU Press

ISBN: 9781421420998

Category: Science

Page: 461

View: 989

The fascinating story of North Atlantic right whales—from their evolutionary origin, through a thousand-year history of relentless pursuit by whalers, to ongoing efforts to rescue them from the brink of extinction. In the cold waters of the unforgiving North Atlantic Ocean, some of the heartiest humans of medieval days ventured out in search of whales. Through the centuries, people on both sides of the Atlantic became increasingly dependent on whale oil and other cetacean products. To meet this growing demand, whaling became ever more sophisticated and intense, leading to the collapse of what was once a seemingly inexhaustible supply of large cetaceans. Central to the whale's subsequent struggle for existence has been one species—the North Atlantic right whale. Conservationist David W. Laist now provides the first complete history of the North Atlantic right whale, from its earliest encounters with humans to its close brush with extinction, to its currently precarious yet hopeful status as a conservation icon. Favored by whalers because of their high yields of oil and superior baleen, these giants became known as "the right whale to hunt," and their numbers dwindled to a mere 100 individuals worldwide. Their dire status encouraged the adoption of a ban on hunting and a treaty that formed the International Whaling Commission. Recovery of the species, however, has proven elusive. Ship strikes and entanglement in commercial fishing gear have hampered herculean efforts to restore the population. Today, only about 500 right whales live along the US and Canadian Atlantic coasts—an improvement from the early twentieth century, but still a far cry from the thousands that once graced Atlantic waters. Laist's masterpiece features an incredible collection of photographs and artwork that give life to the fascinating history that unfolds in its pages. The result is a single volume that offers a comprehensive understanding of North Atlantic right whales, the role they played in the many cultures that hunted them, and our modern attempts to help them recover.
Categories: Science

The Great Sperm Whale

The Great Sperm Whale

Weight of a sperm whale, whole and in parts. South African Journal of Science 66:225– ———. 1972. Sperm whales off Durban. Discovery Reports 35:199–358. Gambell, R., C. Lockyer, and G. J. B. Ross. 1973. Observations on the birth of a ...

Author: Richard Ellis

Publisher: University Press of Kansas

ISBN: 9780700617722

Category: Nature

Page: 400

View: 866

Over the past several decades, Richard Ellis has produced a remarkable body of work that has been called "magnificent" (Washington Post Book World), "masterful" (Scientific American), "magical" (Men's Journal), and a "dazzling tour de force" (Christian Science Monitor). Ellis's new book-a fascinating tour through the world of the sperm whale-will surely inspire more such praise for the author heralded by Publisher Weekly as "America's foremost writer on marine research." Written with Ellis's deep knowledge and trademark passion, verve, and wit-and illustrated with a wide array of images including his own signature artwork-his study covers the full spectrum of the sperm whale's existence from its prehistoric past to its current endangered existence. Ellis, as no one else can, illuminates the iconic impact of Physeter macrocephalus ("big-headed blower") on our history, environment, and culture, with a substantial nod to Herman Melville and Moby-Dick, the great novel that put the sperm whale (and whaling) on the literary map. Ranging far and wide, Ellis covers the sperm whale's evolution, ecology, biology, anatomy, behavior, social organization, intelligence, communications, migrations, diet, and breeding. He also devotes considerable space to the whale's hunting prowess, including its clashes with the giant squid, and to the history of the whaling industry that decimated its numbers during the last two centuries. He even includes a story about a beached juvenile he helped rescue, an event that provided scientists with one of their first opportunities to observe a sperm whale in the water and up close. Offering a rich tapestry for anyone with an interest in the marvels of ocean life, Ellis's book provides an indispensable guide to the life and times of one of the planet's most intelligent, elusive, and endangered species.
Categories: Nature

Almost Like a Whale

Almost Like a Whale

In his new book, Steve Jones takes on the challenge of going back to the book of the millennium, Charles Darwin's The Origin of Species.

Author: Steve Jones

Publisher: Random House

ISBN: 9780552999588

Category: Evolució (Biologia)

Page: 547

View: 820

In his new book, Steve Jones takes on the challenge of going back to the book of the millennium, Charles Darwin's The Origin of Species. Before The Origin, biology was a set of unconnected facts. Darwin made it into a science, linked by the theory of evolution, the grammar of the living world.It reveals ties between cancer and the genetics of fish, between brewing and inherited disease, between the sex lives of crocodiles and the politics of Brazil. Darwin used the biology of the nineteenth century to prove his case. Now, that science has been revolutionized and his case can be reargued using the twentieth century's astonishing advances. From AIDS to dinosaurs, from conservation to cloned sheep, bursting with anecdotes, jokes and irresistible facts, Almost Like a Whale is a popular account of the science that makes biology make sense. It will catch the millennial mood and tell all those for whom Darwin is merely a familiar name what he really meant. It exposes the Darwinian delusions which try (and fail) to explain human behaviour in evolutionary terms, and, while giving an up-to-date account of our own past, shows how humans are the first species to step beyond the constraints of biology.
Categories: Evolució (Biologia)

Encyclopedia of Marine Mammals

Encyclopedia of Marine Mammals

All early cetaceans had long snouts, but those of remingtonocetids are proportionally even longer than those of other archaeocetes ... In “The Emergence of Whales, Evolutionary Patterns in the Origin of Cetacea” (J. G. M. Thewissen, ed.) ...

Author: William F. Perrin

Publisher: Academic Press

ISBN: 0080919936

Category: Science

Page: 1352

View: 789

This thorough revision of the classic Encyclopedia of Marine Mammals brings this authoritative book right up-to-date. Articles describe every species in detail, based on the very latest taxonomy, and a host of biological, ecological and sociological aspects relating to marine mammals. The latest information on the biology, ecology, anatomy, behavior and interactions with man is provided by a cast of expert authors – all presented in such detail and clarity to support both marine mammal specialists and the serious naturalist. Fully referenced throughout and with a fresh selection of the best color photographs available, the long-awaited second edition remains at the forefront as the go-to reference on marine mammals. More than 20% NEW MATERIAL includes articles on Climate Change, Pacific White-sided Dolphins, Sociobiology, Habitat Use, Feeding Morphology and more Over 260 articles on the individual species with topics ranging from anatomy and behavior, to conservation, exploitation and the impact of global climate change on marine mammals New color illustrations show every species and document topical articles FROM THE FIRST EDITION “This book is so good...a bargain, full of riches...packed with fascinating up to date information. I recommend it unreservedly it to individuals, students, and researchers, as well as libraries." --Richard M. Laws, MARINE MAMMALS SCIENCE "...establishes a solid and satisfying foundation for current study and future exploration" --Ronald J. Shusterman, SCIENCE
Categories: Science

Conservation and Development in the Gray Whale Lagoons of Baja California Sur Mexico

Conservation and Development in the Gray Whale Lagoons of Baja California Sur  Mexico

1.2.2 Human Exploitation Because they tend to migrate close to shore , gray whales were easily hunted for subsistence by ... The emergence of modern commercial pelagic whaling involving factory ships fueled a new round of gray whale ...

Author: Serge Dedina

Publisher:

ISBN: UTEXAS:059173001662253

Category: Conservation of natural resources

Page: 56

View: 767

Categories: Conservation of natural resources

On the Development and Structure of the Whale

On the Development and Structure of the Whale

and other Whales which have no gills , but a spouting - tube , give birth to living young ones , as do also the sawfish and the „ bus “ ( le bœuf marin ) ; for in none of these animals are eggs found , but from the first , germs ...

Author: Gustav Adolph Guldberg

Publisher:

ISBN: HARVARD:32044107327884

Category: Cetacea

Page: 124

View: 818

Categories: Cetacea