The Life-history and Growth of the Pismo Clam PDF Download
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Author: Frank Walter Weymouth
Publisher:
ISBN:
Category : Clams
Languages : en
Pages : 688
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Book Description
Commercially the Pismo clam (Tivela stultorum)ranks first in importance in California among the clams and third among all the mollusks, being exceeded only by the oyster and the abalone. A second reason for considering this species is that there has been such evidence of depletion as to lead to increasingly more stringent protective laws, all of which have been urged by the residents of the county in which the clam is most abundant. ... An accurate study of the cause and extent of this apparent diminution must await knowledge of at least the fundamental facts of the life history of this clam. ... The more important features are considered to be: the habits, enemies and mortality of the adult; the rate of growth and the factors affecting it; the age at certain significant periods, particularly at sexual maturity and at the time when the legal size is reached; the most common age of clams forming the commercial catch; the season of spawning and the productivity; and the habits, enemies and mortality of the young.
Author: Frank Walter Weymouth
Publisher:
ISBN:
Category : Clams
Languages : en
Pages : 688
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Book Description
Commercially the Pismo clam (Tivela stultorum)ranks first in importance in California among the clams and third among all the mollusks, being exceeded only by the oyster and the abalone. A second reason for considering this species is that there has been such evidence of depletion as to lead to increasingly more stringent protective laws, all of which have been urged by the residents of the county in which the clam is most abundant. ... An accurate study of the cause and extent of this apparent diminution must await knowledge of at least the fundamental facts of the life history of this clam. ... The more important features are considered to be: the habits, enemies and mortality of the adult; the rate of growth and the factors affecting it; the age at certain significant periods, particularly at sexual maturity and at the time when the legal size is reached; the most common age of clams forming the commercial catch; the season of spawning and the productivity; and the habits, enemies and mortality of the young.
Author: William C. Herrington
Publisher:
ISBN:
Category : Clams
Languages : en
Pages : 80
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Book Description
Author: John E. Fitch
Publisher:
ISBN:
Category : Clams
Languages : en
Pages : 30
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Book Description
Author: James Willard Nybakken
Publisher:
ISBN:
Category : Clam fisheries
Languages : en
Pages : 74
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Book Description
Author: Anthony D. Fredericks
Publisher: Skyhorse
ISBN: 1632201186
Category : Nature
Languages : en
Pages : 364
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Book Description
Get up close and personal with an amazing creature that has invaded our lexicon as well as our restaurants. It breathes with tubes, it has no head or brain, it feeds through a filter, and it is the source of dozens of familiar proverbs (“happy as a clam!”). Clams, it turns out, have been worshipped (by the Moche people of ancient Peru), used as money (by the Algonquin Indians), and consumed by people for thousands of years. Yet The Secret Life of Clams is the first adult trade book to deal exclusively with this gastronomic treat that is more complex than its simple two shells might reveal. The Secret Life of Clams features compelling insights, captivating biology, wry observations, and up-to-the-minute natural history that will keep readers engaged and enthralled. Written by award-winning science author Anthony D. Fredericks, The Secret Life of Clams includes a comfortable infusion of humor, up-to-date research, fascinating individuals (scientists and laypeople alike), and the awe of a fellow explorer as he guides readers on a journey of wonder and adventure. Along with an appreciation for oceanic creatures, this is a guidebook for armchair marine biologists everywhere who seek amazing discoveries in concert with compelling narration.
Author: Edward Flanders Ricketts
Publisher: Stanford University Press
ISBN: 9780804720687
Category : Science
Languages : en
Pages : 682
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Book Description
One of the classic works of marine biology, a favorite for generations, has now been completely revised and expanded. Between Pacific Tides is a book for all who find the shore a place of excitement, wonder, and beauty, and an unsurpassed introductory text for both students and professionals. This book describes the habits and habitats of the animals that live in one of the most prolific life zones of the world--the rocky shores and tide pools of the Pacific Coast of the United States. The intricate and fascinating life processes of these creatures are described with affectionate care. The animals are grouped according to their most characteristic habitat, whether rocky shore, sandy beach, mud flat, or wharf piling, and the authors discuss their life history, physiology, and community relations, and the influence of wave shock and shifting tide level. Though the basic purpose and structure--and much of the text--of the book remain the same, content has been increased by about 20 percent; a multitude of changes and additios has been made in the text; the Annotated Systematic Index and General Bibliography have been updated and greatly expanded (now almost 2,300 entries); more than 200 new photographs and drawings have been incorporated; and an entirely new chapter has been added--a topical presentation of the several factors influencing distribution of organisms along the shore. This edition also includes John Steinbeck's Foreword to the 1948 edition.
Author: Daniel J. Miller
Publisher:
ISBN:
Category : Clamming
Languages : en
Pages : 358
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Book Description
Author: William N. Shaw
Publisher:
ISBN:
Category : Clams
Languages : en
Pages : 24
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Book Description
Author: William S. Leet
Publisher: University Of California, Division of Agriculture and Natural Resources; Califorinia Sea Grant
ISBN: 9781879906570
Category : Nature
Languages : en
Pages : 596
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Book Description
This 592-page spiral-bound reference provides a baseline of information for all those involved with managing living marine resources in California and chronicles changes that have occurred in many of the state’s fisheries. Organized by marine ecosystems: bays and estuaries, nearshore and offshore. Includes illustrated species descriptions with details of biological knowledge, fishery history, landings data, population status and references. Also includes sections on marine birds and mammals and appendices containing management considerations (by species), a glossary of technical terms and acronyms and fishing gear illustrations. Jointly produced by the California Sea Grant Extension Program and the California Department of Fish and Game following the passage of the Marine Life Protection Act in January 1999.
Author: California. Department of Fish and Game
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 442
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Book Description
