Download or read book Spawning Migration of the European Eel written by Guido van den Thillart and published by Springer Science & Business Media. This book was released on 2008-12-18 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Eel Physiology written by Francesca Trischitta and published by CRC Press. This book was released on 2016-04-19 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eel of the genus Anguilla is an extraordinary fish, which due to its particular life cycle has fascinated biologists and physiologists ever since the pioneering works of Homer H. Schmidt in the 1930s. The Eel has become an excellent model for various aspects of adaptive physiological research. Despite that, several books dealing with eel biology, a

Download or read book Reproduction in Aquatic Animals written by Manabu Yoshida and published by Springer Nature. This book was released on 2020-03-25 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an up-to-date overview of the various reproductive systems of a variety of aquatic animals, from invertebrates to fishes. While all terrestrial animals use internal fertilization, aquatic animals have diverse reproductive systems. Some are internal fertilizers with or without mating, but many perform external fertilization. Because of this diversity, the reproductive systems of aquatic animals represent excellent models for the study of adaptive evolution and the species specificity of fertilization. In addition, many aquatic animals, including fish, crustaceans, and mollusks, are important as fishery and aquaculture resources. In this book, up-and-coming researchers examine reproductive systems in representative aquatic animals, covering both the basic knowledge and late-breaking results. Reproduction in Aquatic Animals: From Basic Biology to Aquaculture Technology will be of interest to graduate and postgraduate students in biology and agricultural sciences, as well as to researchers and technicians in the fields of reproductive biology and fishery science and to non-academics.

Download or read book Swimming Physiology of Fish written by Arjan P. Palstra and published by Springer Science & Business Media. This book was released on 2012-08-30 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: In light of mounting fishing pressures, increased aquaculture production and a growing concern for fish well-being, improved knowledge on the swimming physiology of fish and its application to fisheries science and aquaculture is needed. This book presents recent investigations into some of the most extreme examples of swimming migrations in salmons, eels and tunas, integrating knowledge on their performance in the laboratory with that in their natural environment. For the first time, the application of swimming in aquaculture is explored by assessing the potential impacts and beneficial effects. The modified nutritional requirements of “athletic” fish are reviewed as well as the effects of exercise on muscle composition and meat quality using state-of-the-art techniques in genomics and proteomics. The last chapters introduce zebrafish as a novel exercise model and present the latest technologies for studying fish swimming and aquaculture applications.

Download or read book South Africa written by and published by . This book was released on 1909 with total page 718 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Endurance and the First World War written by David Monger and published by Cambridge Scholars Publishing. This book was released on 2014-10-02 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Endurance was an inherent part of the First World War. The chapters in this collection explore the concept in New Zealand and Australia. Researchers from a range of backgrounds and disciplines address what it meant for New Zealanders and Australians to endure the First World War, and how the war endured through the Twentieth Century. Soldiers and civilians alike endured hardship, discomfort, fears and anxieties during the war. Officials and organisations faced unprecedented demands on their time and resources, while Maori, Australian Aborigines, Anglo-Indian New Zealanders and children sought their own ways to contribute and be acknowledged. Family-members in Australia and New Zealand endured uncertainty about their loved ones’ fates on distant shores. Once the war ended, different forms of endurance emerged as responses, memories, myths and memorials quickly took shape and influenced the ways in which New Zealanders and Australians understood the conflict. The collection is divided into the themes of Institutional Endurance, Home Front Endurance, Battlefield Endurance, Race and Endurance, and Memorials.

Download or read book Plastic Fantastic written by Eugenie Samuel Reich and published by Macmillan. This book was released on 2009-05-12 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the scientific scandal that arose when researchers at Bell Laboratories discovered that wunderkind physicist Jan Hendrik Schön falsified his data to prove that he had discovered a simpler way to make transistors, which would have drastically improved energy technology.

Download or read book Handbook of Crystal Structures and Magnetic Properties of Rare Earth Intermetallics written by Andrej Szytula and published by CRC Press. This book was released on 2020-07-09 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rare-earth intermetallics, also known as lanthanide elements, play an important role in the study of magnetic materials and the development of semi- and super-conducting materials. This handbook provides an up-to-date compilation of crystallographic, physical, and magnetic data on rare-earth intermetallic compounds. Over 20 different structure types are described in detail with an emphasis on how crystal structure can affect magnetic properties. Theoretical models for magnetic interactions are described as well as the impact of crystal electric fields on transport properties, magneto crystalline anistropy and hyperfine interactions. This book provides materials scientists, engineers and physicists with all the critical information needed to use rare-earth intermetallics effectively in the development of new materials.

Download or read book Why Friends are Friends written by Jack L. Willcuts and published by Barclay Press. This book was released on 1984 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Book of Christian Discipline of the Religious Society of Friends in Great Britain written by London Yearly Meeting (Society of Friends) and published by . This book was released on 1883 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Book of Christian discipline of the Religious of friends extr from documents issued under the sanction of the yearly meeting held in London from its first institution written by Society of friends London yearly meeting and published by . This book was released on 1883 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Book of Christian Discipline of the Religious Society of Friends in Great Britain written by Anonymous and published by BoD – Books on Demand. This book was released on 2024-01-05 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reprint of the original, first published in 1883.

Download or read book Tracts Illustrating the History Doctrine and Discipline of the Society of Friends written by Society of Friends and published by . This book was released on 1848 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tracts Illustrating the History Doctrine and Discipline of the Society of Friends written by [Anonymus AC10384225] and published by . This book was released on 1848 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Our Young Folks written by and published by . This book was released on 1869 with total page 1188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Popular children's magazine containing music, enigmas, charades, maps, stories and articles by various authors.

Download or read book Our Boys and Girls written by Oliver Optic and published by . This book was released on 1871 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Our Young Folks written by John Townsend Trowbridge and published by . This book was released on 1869 with total page 926 pages. Available in PDF, EPUB and Kindle. Book excerpt: