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Author: Vishwa Raman Prasad Sinha
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 186
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Book Description
Author: Vishwa Raman Prasad Sinha
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 186
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Book Description
Author: Guido van den Thillart
Publisher: Springer Science & Business Media
ISBN: 1402090951
Category : Science
Languages : en
Pages : 472
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Book Description
Freshwater eels are almost infinitely improbable creatures. They spawn and die in the middle of the ocean, often associated with undersea mountains. Their tra- parent, leaf-like larvae move with ocean currents for months or years until they approach the mouths of freshwater rivers. Then they undergo a dramatic transf- mation in morphology, physiology and behavior. They move from their planktonic oceanic environment, migrate upstream and live for several years as apex fre- water predators. Then, almost impossibly, as they become sexually mature, they reverse their migration downstream to the ocean and back to spawning grounds to complete their life cycle. The dramatic changes in their life cycles are incredible. The efforts to unravel the details of their life history have been truly daunting. Much of the past research was the work of dedicated individuals who devoted their lifetime research to these fishes. Freshwater eels merit a separate chapter in almost any textbook dealing with ichthyology, marine biology or animal migration. We know a great deal about some aspects of the biology of freshwater eels. However, our understanding of their bi- ogy still resembles a work of art as much as a work of science. To some it appears like the sweeping brush strokes of a Japanese Zen landscape, to others it resembles the work of a French impressionist, and to still others it appears as magic realism.
Author: Patrik Svensson
Publisher: HarperCollins
ISBN: 0062968831
Category : Science
Languages : en
Pages : 256
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Book Description
A Finalist for the Los Angeles Times Book Prize National Bestseller Winner of the National Outdoor Book Award Longlisted for the Andrew Carnegie Medal for Excellence in Nonfiction A New York Times Notable Book One of TIME’s 100 Must Read Books of the Year One of The Washington Post’s 50 Notable Nonfiction Books of the Year One of Smithsonian Magazine’s 10 Best Science Books of the Year One of Publishers Weekly’s Best Nonfiction Books of the Year A New York Times Editor’s Choice Part H Is for Hawk, part The Soul of an Octopus, The Book of Eels is both a meditation on the world’s most elusive fish—the eel—and a reflection on the human condition Remarkably little is known about the European eel, Anguilla anguilla. So little, in fact, that scientists and philosophers have, for centuries, been obsessed with what has become known as the “eel question”: Where do eels come from? What are they? Are they fish or some other kind of creature altogether? Even today, in an age of advanced science, no one has ever seen eels mating or giving birth, and we still don’t understand what drives them, after living for decades in freshwater, to swim great distances back to the ocean at the end of their lives. They remain a mystery. Drawing on a breadth of research about eels in literature, history, and modern marine biology, as well as his own experience fishing for eels with his father, Patrik Svensson crafts a mesmerizing portrait of an unusual, utterly misunderstood, and completely captivating animal. In The Book of Eels, we meet renowned historical thinkers, from Aristotle to Sigmund Freud to Rachel Carson, for whom the eel was a singular obsession. And we meet the scientists who spearheaded the search for the eel’s point of origin, including Danish marine biologist Johannes Schmidt, who led research efforts in the early twentieth century, catching thousands upon thousands of eels, in the hopes of proving their birthing grounds in the Sargasso Sea. Blending memoir and nature writing at its best, Svensson’s journey to understand the eel becomes an exploration of the human condition that delves into overarching issues about our roots and destiny, both as humans and as animals, and, ultimately, how to handle the biggest question of all: death. The result is a gripping and slippery narrative that will surprise and enchant.
Author: K. Aida
Publisher: Springer Science & Business Media
ISBN: 4431659072
Category : Science
Languages : en
Pages : 486
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Book Description
As a food resource in both Eastern and Western countries, the eel is an important fish. Over the years, remarkable progress has been achieved in understanding the mysterious life cycle of eels that has fascinated scientists since the age of Aristotle. The spawning area of the Japanese eel was discovered and the migratory route of its larvae was elucidated. With the development of techniques for artificial induction of gonadal maturation, it became possible to obtain hatched larvae. Larval rearing to the leptocephalus stage, one of the most difficult tasks involved in eel culture, finally was achieved. By presenting these important breakthroughs, Eel Biology will be of great help in the development of effective management strategies for maintaining stable eel populations. With contributions by leading experts, this book is a valuable source for researchers as well as industry technicians in the fields of aquatic biology, aquaculture, and fisheries.
Author: Bridget S. Green
Publisher: Springer Science & Business Media
ISBN: 140205775X
Category : Science
Languages : en
Pages : 313
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Book Description
Techniques and theory for processing otoliths from tropical marine fish have developed only recently due to an historic misconception that these organisms could not be aged. Otoliths are the most commonly used structures from which daily, seasonal or annual records of a fish’s environmental history are inferred, and are also used as indicators of migration patterns, home range, spatial distribution, stock structure and life history events. A large proportion of projects undertaken on tropical marine organisms involve removal and processing of calcified structures such as otoliths, statoliths or vertebrae to retrieve biological, biochemical or genetic information. Current techniques and principles have evolved rapidly and are under constant modification and these differ among laboratories, and more particularly among species and within life history stages. Tropical fish otoliths: Information for assessment, management and ecology is a comprehensive description of the current status of knowledge about otoliths in the tropics. This book has contributions from leading experts in the field, encompassing a tropical perspective on daily and annual ageing in fish and invertebrates, microchemistry, interpreting otolith microstructure and using it to back-calculate life history events, and includes a treatise on the significance of validating periodicity in otoliths.
Author: Joel Sartore
Publisher: National Geographic Books
ISBN: 1426217773
Category : Nature
Languages : en
Pages : 404
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Book Description
This book of photography represents National Geographic's Photo Ark, a major cross-platform initiative and lifelong project by photographer Joel Sartore to make portraits of the world's animals -- especially those that are endangered. His message: to know these animals is to save them. Sartore intends to photograph every animal in captivity in the world. He is circling the globe, visiting zoos and wildlife rescue centers to create studio portraits of 12,000 species, with an emphasis on those facing extinction. He has photographed more than 6,000 already and now, thanks to a multi-year partnership with National Geographic, he may reach his goal. This book showcases his animal portraits: from tiny to mammoth, from the Florida grasshopper sparrow to the greater one-horned rhinoceros. Paired with the prose of veteran wildlife writer Douglas Chadwick, this book presents an argument for saving all the species of our planet.
Author: Katsumi Tsukamoto
Publisher: Springer Science & Business Media
ISBN: 4431545298
Category : Science
Languages : en
Pages : 186
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Book Description
This book explains much of what is known currently about freshwater eels, focusing on social and cultural aspects as well as science. A wealth of eel-related material is presented by scientists from around the world, including information on eel fishing, resources, distribution, aquaculture, economics, cuisine, environment and ecosystems, idioms, arts and crafts, tradition, legends, mythology, archaeology and even memorial services. Eels are important as food for humankind and are an interesting model for scientists studying animal migration and reproductive ecology. Their snake-like morphology differentiates them from most other fish, and their unpredictable behaviour that allows them to move over wet land and climb rocks adjacent to waterfalls attracts attention and evokes curiosity. Eels are therefore considered to be enigmatic creatures or metaphysical entities beyond human intelligence; indeed, they have been deified in parts of the world. In recent decades, however, with global populations of eels in sharp decline, some species face a real threat of extinction, and effective conservation strategies and measures are needed. Comparisons across these issues between various countries provide an image of a long-lasting relationship between eels and humankind, and encourage comprehensive and detailed understanding of eels from the perspectives of social, cultural and natural sciences. By promoting understanding of the close relationship between eels and humans, the broader public is engaged and public awareness of eel importance raised, helping to conserve these unique but endangered fish.
Author: Richard Schweid
Publisher: Univ of North Carolina Press
ISBN: 0807899267
Category : Nature
Languages : en
Pages : 196
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Book Description
Journalist Richard Schweid first learned the strange facts of the freshwater eel's life from a fisherman in a small Spanish town just south of Valencia. "The eeler who explained the animal's life cycle to me did so as he served up an eel he had just taken from a trap, killed, cleaned, and cooked in olive oil in an earthenware dish," writes Schweid. "I ate it with a chunk of fresh, crusty bread. It was delicious. I was immediately fascinated." As this engaging culinary and natural history reveals, the humble eel is indeed an amazing creature. Every European and American eel begins its life in the Sargasso Sea--a vast, weedy stretch of deep Atlantic waters between Bermuda and the Azores. Larval eels drift for up to three years until they reach the rivers of North America or Europe, where they mature and live as long as two decades before returning to the Sargasso to mate and die. Eels have never been bred successfully in captivity. Consulting fisherfolk, cooks, and scientists, Schweid takes the reader on a global tour to reveal the economic and gastronomic importance of eel in places such as eastern North Carolina, Spain, Northern Ireland, England, and Japan. (While this rich yet mild-tasting fish has virtually disappeared from U.S. tables, over $2 billion worth of eel is still eagerly consumed in Europe and Asia each year.) The book also includes recipes, both historic and contemporary, for preparing eel.
Author: C. L. Deelder
Publisher: Barrie Publishing
ISBN:
Category : Nature
Languages : en
Pages : 88
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Book Description
This synopsis compiles and reviews the scattered information on the identify, distribution, life history, populatons, exploitation, management and culture of the eel, Anguilla anguilla (Linnaeus, 1758), a species that has been harvested in Europe for many centuries.
Author: Frederich W. Tesch
Publisher: John Wiley & Sons
ISBN: 1405173432
Category : Technology & Engineering
Languages : en
Pages : 416
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Book Description
A strong demand for an English version of the third German Editionof this extremely important book paved the way for this excellentnew translation, which contains much new information from over 500publications, not covered by the previous English languageedition. The Eel is the standard work on the species with chaptersin the book covering body structure and functions, developmentalstages and distribution of the eel species, post-larval ecology andbehaviour, harvest and environmental relationships, fishingmethods, eel culture, diseases, parasites and bodily damage, theworld trade in eels and eel processing. Contributions are includedfrom several world authorities including new information concerninggenetic diversity in eel populations and the consequences for theirmanagement. Written by Friedrich-Wilhelm Tesch, one of the foremost worldauthorities on eels and carefully edited by Professor Thorpe, wellknown for his work in fish biology, writing and editing, TheEel is an essential purchase for all those working with thespecies, including fish biologists, physiologists and ecologists,aquatic and environmental scientists, fisheries managers and fishfarm personnel. Copies of this landmark publication should beavailable in the libraries of all research establishments anduniversities where these subjects are studied or taught. The Fisheries Society of the British Isles provided generousfinancial support enabling the translation and publication of thisbook. Written by F-W Tesch; Translated from the German Editionby R. J. White; Edited by J. E. Thorpe
