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Author: Cornelis Groot Publisher: UBC Press ISBN: 9780774803595 Category : Nature Languages : en Pages : 602
Book Description
Pacific salmon are an important biological and economic resource of countries of the North Pacific rim. They are also a unique group of fish possessing unusually complex life histories. There are seven species of Pacific salmon, five occurring on both the North American and Asian continents (sockeye, pink, chum, chinook, and coho) and two (masu and amago) only in Asia. The life cycle of the Pacific salmon begins in the autumn when the adult female deposits eggs that are fertilized in gravel beds in rivers or lakes. The young emerge from the gravel the following spring and will either migrate immediately to salt water or spend one or more years in a river or lake before migrating. Migrations in the ocean are extensive during the feeding and growing phase, covering thousands of kilometres. After one or more years the maturing adults find their way back to their home river, returning to their ancestral breeding grounds to spawn. They die after spawning and the eggs in the gravel signify a new cycle. Upon this theme Pacific salmon have developed many variations, both between as well as within species. Pacific Salmon Life Histories provides detailed descriptions of the different life phases through which each of the seven species passes. Each chapter is written by a scientist who has spent years studying and observing a particular species of salmon. Some of the topics covered are geographic distribution, transplants, freshwater life, ocean life, development, growth, feeding, diet, migration, and spawning behaviour. The text is richly supplemented by numerous maps, illustrations, colour plates, and tables and there is a detailed general index, as well as a useful geographical index.
Author: Cornelis Groot Publisher: UBC Press ISBN: 9780774803595 Category : Nature Languages : en Pages : 602
Book Description
Pacific salmon are an important biological and economic resource of countries of the North Pacific rim. They are also a unique group of fish possessing unusually complex life histories. There are seven species of Pacific salmon, five occurring on both the North American and Asian continents (sockeye, pink, chum, chinook, and coho) and two (masu and amago) only in Asia. The life cycle of the Pacific salmon begins in the autumn when the adult female deposits eggs that are fertilized in gravel beds in rivers or lakes. The young emerge from the gravel the following spring and will either migrate immediately to salt water or spend one or more years in a river or lake before migrating. Migrations in the ocean are extensive during the feeding and growing phase, covering thousands of kilometres. After one or more years the maturing adults find their way back to their home river, returning to their ancestral breeding grounds to spawn. They die after spawning and the eggs in the gravel signify a new cycle. Upon this theme Pacific salmon have developed many variations, both between as well as within species. Pacific Salmon Life Histories provides detailed descriptions of the different life phases through which each of the seven species passes. Each chapter is written by a scientist who has spent years studying and observing a particular species of salmon. Some of the topics covered are geographic distribution, transplants, freshwater life, ocean life, development, growth, feeding, diet, migration, and spawning behaviour. The text is richly supplemented by numerous maps, illustrations, colour plates, and tables and there is a detailed general index, as well as a useful geographical index.
Author: Canada. Department of Fisheries and Oceans Publisher: Fisheries and Oceans, Information and Publications Branch ISBN: Category : Nature Languages : en Pages : 508
Book Description
A three-day symposium was organized by the Department of Fisheries and Oceans and convened at Nanaimo, British Columbia in November 1985. Advice on subject matter and participation came from an external committee of senior scientists and administrators in contributing agencies in Canada, Japan, the United States, and the Union of Soviet Socialist Republics. The papers included in the proceedings deal with sockeye biology and stock management. Papers on sockeye biology are divided into those concerned primarily with life history strategies and enhancement and development. Papers dealing with management are divided into the tools of management and management of some principal stocks.
Author: Thomas P. Quinn Publisher: UBC Press ISBN: 0774842431 Category : Nature Languages : en Pages : 392
Book Description
The Behavior and Ecology of Pacific Salmon and Trout explains the patterns of mate choice, the competition for nest sites, and the fate of the salmon after their death. It describes the lives of offspring during the months they spend incubating in gravel, growing in fresh water, and migrating out to sea to mature. This thorough, up-to-date survey should be on the shelf of everyone with a professional or personal interest in Pacific salmon and trout. Written in a technically accurate but engaging style, it will appeal to a wide range of readers, including students, anglers, biologists, conservationists, legislators, and armchair naturalists.
Author: Bill Horn Publisher: Rowman & Littlefield ISBN: 0811772438 Category : Sports & Recreation Languages : en Pages : 194
Book Description
The word “Alaska” conjures visions of jagged icy peaks, smoking volcanoes, vast crimson tundra, sweeping blue rivers and lakes, shaggy brown bears, bush airplanes and pilots, remote Native villages, flashing rainbow trout, and rivers teeming with crimson salmon. These visions are realized, on a stupendous scale, in southwest Alaska’s Bristol Bay region. Each year 60 million or more wild salmon pour into the Bay to fight their way upstream past nets, anglers, bears, swirling rapids, and cascading waterfalls in lake and river systems with magical names—Iliamna, Kvichak, Naknek, Alagnak, Becharof, Egegik, Nushagak, Togiak, and Ugashik. Sport anglers travel to the region to pursue all five species of Pacific salmon, dolly varden and arctic char, grayling and giant rainbow trout that provide unmatched thrills on the end of a line with their explosive runs and twisting leaps. This unparalleled fishing—driven by the salmon—makes Bristol Bay the place of fly fisher’s dreams. In this book, author Bill Horn provides a detailed and compelling account of the natural history and life cycle of these fish as well as a glimpse into the culture, management, and politics that are part of the sockeye salmon story. It also offers essential information for anglers planning a trip to the region, including best times of the year for fishing, strategies and fly choices, and planning your trip.
Author: Environmental Science Information Center. Library and Information Services Division Publisher: ISBN: Category : Earth sciences Languages : en Pages : 578
Author: Cornelis Groot
Author: Cornelis Groot
Author: Donald E. Rogers
Author: 
Author: Canada. Department of Fisheries and Oceans
Author: 
Author: Thomas P. Quinn
Author: 
Author: United States. Department of the Interior. Library
Author: Bill Horn
Author: Environmental Science Information Center. Library and Information Services Division