Edible Sea Urchins: Biology and Ecology

Edible Sea Urchins: Biology and Ecology

Author: John M. Lawrence

Publisher: Elsevier

Published: 2001-05-21

Total Pages: 429

ISBN-13: 0080530702

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Sea urchins are a major component of marine environments found throughout the world's oceans. A major model for research in developmental biology, they are also of major economic importance in many regions and interest in their management and aquaculture has increased greatly in recent years. This book provides a synthesis of biological and ecological characteristics of sea urchins that are of basic scientific interest and also essential for effective fisheries management and aquaculture. General chapters consider characteristics of sea urchins as a whole. In addition, specific chapters are devoted to the ecology of 17 species that are of major commercial interest and ecological importance. Features include: • A synthesis of what is known about the basic biological characteristics of the sea urchin, useful for the direction of future research. • Case histories of 17 species that illustrate their ecological role in a variety of environments. • With the catastrophic decline in fisheries resulting primarily from over-fishing, it is essential that the populations be managed effectively and that aquaculture be developed. This book provides knowledge of the biology and ecology of the commercially important sea urchins that will contribute to these goals. • The only book available in present literature devoted to sea urchins. With this new title experts provide a broad synthetic treatment and in depth analysis of the biology and ecology of sea urchins from around the world, designed to provide an understanding of the group and the basis for fisheries management and aquaculture.


Sea Urchins

Sea Urchins

Author: Deborah Coldiron

Publisher: ABDO Publishing Company

Published: 2008-09-01

Total Pages: 34

ISBN-13: 1617860980

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Engaging text highlights the life cycle of sea urchins, from birth through adulthood. This book's easy-to-read text and full-color photographs bring this animal's world to life, introducing readers to the sea urchin's diet, habitat, and enemies and threats. Sea urchin size, body description, and family are also discussed. A diagram helps readers identify body parts, from its mouth to its test. Fast Facts are great for reports, while Fascinating Facts expand readers' knowledge of sea urchins. Bold glossary words and an index enhance reader comprehension. Buddy Books is an imprint of ABDO Publishing Company.


The Japanese Sea Urchin Market

The Japanese Sea Urchin Market

Author: Sunee C. Sonu

Publisher:

Published: 2003

Total Pages: 44

ISBN-13:

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"Sea urchins are harvested worldwide, the majority destined for the Japanese market. Japan is by far the world's largest importer and consumer of sea urchin roe. In 2002, Japan imported about 18,525 metric tons (mt) of live sea urchins and sea urchin roe valued at about 247 million dollars, an increase of more than ten-fold in volume and 12-fold in value from 1975. Much of this increase was due to good demand, decreased domestic harvest, and consequent rise in price for sea urchin roe. Fresh sea urchin roe was the dominant product imported into Japan, representing as much as 49 percent in value in 2002. The United States has become the largest supplier of fresh roe to Japan, providing over 45 percent in value and 39 percent in volume of the total. Differences in peak fishing seasons in Japan (spring through summer) and the United States (fall through spring) have benefitted U.S. exporters in marketing sea urchin roe to Japan. Japan was the world's largest harvester of sea urchins until 1984. Since 1987, Japanese harvests have declined steadily due mainly to declining stock abundance. The harvest in 2002 of 13,000 mt was less than half of the record high landings which occurred in 1969. From 1987 to 2001, landings in the United States have exceeded Japanese landings. In 2001, sea urchins were harvested in six states: Alaska (1,166 mt), Washington (344 mt), Oregon (571 mt), California (5,951 mt), Maine (4,491 mt), and Rhode Island (0.1 mt). Most fresh sea urchin roe are sold through auction at the Tokyo Central Wholesale Market. Although quality of roe is the most important factor in determining prices, total supply (domestic and imported roe) is also significant. In 2002, the highest price for imported roe occurred in January. High prices for Japanese roe occurred in January and September, reflecting the low availability of roe during these months. Japan regulates imports of sea urchin products with import tariffs. As the United States and Japan are signatories to the World Trade Organization (WTO), WTO tariffs apply to U.S. exports of sea urchin products: 7 percent for fresh, frozen, or salted sea urchin roe, and 10 percent for prepared or preserved products, including those in airtight containers. There is no tariff for live sea urchins. Tariff rates are calculated as a percentage of total cost, including insurance and freight. Sea urchin roe shipped from Los Angeles is considered to be the best in Japan's import market. The future market for sales of U.S. sea urchins to Japan depends to a large extent on Japanese sea urchin harvest. Because domestic harvest is not likely to increase in the short term, increased export of U.S. sea urchins and sea urchin roe has significant potential."--Executive summary.


The Star-Crossed Stone

The Star-Crossed Stone

Author: Ken McNamara

Publisher: University of Chicago Press

Published: 2010-11-15

Total Pages: 281

ISBN-13: 0226514714

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Throughout the four hundred thousand years that humanity has been collecting fossils, sea urchin fossils, or echinoids, have continually been among the most prized, from the Paleolithic era, when they decorated flint axes, to today, when paleobiologists study them for clues to the earth’s history. In The Star-Crossed Stone, Kenneth J. McNamara, an expert on fossil echinoids, takes readers on an incredible fossil hunt, with stops in history, paleontology, folklore, mythology, art, religion, and much more. Beginning with prehistoric times, when urchin fossils were used as jewelry, McNamara reveals how the fossil crept into the religious and cultural lives of societies around the world—the roots of the familiar five-pointed star, for example, can be traced to the pattern found on urchins. But McNamara’s vision is even broader than that: using our knowledge of early habits of fossil collecting, he explores the evolution of the human mind itself, drawing striking conclusions about humanity’s earliest appreciation of beauty and the first stirrings of artistic expression. Along the way, the fossil becomes a nexus through which we meet brilliant eccentrics and visionary archaeologists and develop new insights into topics as seemingly disparate as hieroglyphics, Beowulf, and even church organs. An idiosyncratic celebration of science, nature, and human ingenuity, The Star-Crossed Stone is as charming and unforgettable as the fossil at its heart.


Facts about the Sea Urchin

Facts about the Sea Urchin

Author: Lisa Strattin

Publisher:

Published: 2019-08-29

Total Pages: 39

ISBN-13: 9781689370882

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This educational sea urchin books for kids presents facts along with full color photographs and carefully chosen words to teach children about the Sea Urchin. Packed with facts about the sea urchins, your children or grandchildren will enjoy learning from start to finish while they read this book. This sea urchin kids book was a pleasure to write, and knowing that children learn from it made it all worthwhile! If you want to learn about the sea urchin, you will enjoy this book. Learn many interesting facts and see some beautiful photographs as the sea urchins are seen in their natural habitat. The gorgeous photographs will keep your child engaged from beginning to end. Included in the paperback version are some coloring pages for your child! Note: This book is suitable for children 5 years or age and older, although younger children will enjoy it if you share it with them. Grab your copy NOW by clicking the buy button at the top right of the page.


Echinoderm Aquaculture

Echinoderm Aquaculture

Author: Nicholas Brown

Publisher: John Wiley & Sons

Published: 2015-09-28

Total Pages: 386

ISBN-13: 0470960388

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Sea urchins and sea cucumbers are highly sought after delicacies growing in popularity globally. The demand for these species is rapidly outpacing natural stocks, and researchers and seafood industry personnel are now looking towards aquaculture as a means of providing a sustainable supply of these organism. Echinoderm Aquaculture is a practical reference on the basic biology and current culture practices for a wide range of geographically diverse echinoderm species. Echinoderm Aquaculture begins by examining the basic ecology and biology of sea urchins and sea cucumbers as well as the breadth of uses of these organisms as a source of food and bioactive compound. Subsequent chapters delineate the specific species of interest invarious geographic regions from around the world. Together, chapters provide a comprehensive coverage of culture practices. Echinoderm Aquaculture is a practical reference for researchers and industry personnel, and will serve as an invaluable resource to this rapidly growing segment of the aquaculture industry.


What If Sea Urchins Disappeared?

What If Sea Urchins Disappeared?

Author: Theresa Emminizer

Publisher: Gareth Stevens Publishing LLLP

Published: 2019-07-15

Total Pages: 24

ISBN-13: 1538238292

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From the fiercest predator to the lowliest plant, every member of an ecosystem is immeasurably important to the survival of their environment. Although they're not regarded as a keystone species, sea urchins play a pivotal role in maintaining healthy marine environments. Without sea urchins to consume algae, entire coral reef ecosystems could collapse. This educational text invites readers to imagine a world without sea urchins, delving into curricular science concepts, such as interdependence of species, with accessible language and real-world examples.


Sea Urchins

Sea Urchins

Author: Martha E. H. Rustad

Publisher: Bellwether Media

Published: 2012-01-01

Total Pages: 26

ISBN-13: 1612111564

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"Simple text and supportive images introduce beginning readers to Sea Urchins. Intended for students in kindergarten through third grade"--Provided by publisher.


Sea Urchins

Sea Urchins

Author: Heather Adamson

Publisher: Blastoff! Readers

Published: 2017-08

Total Pages: 0

ISBN-13: 9781626176461

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"Simple text and full-color photography introduce beginning readers to sea urchins. Developed by literacy experts for students in kindergarten through third grade"--