Salmon Of The North Pacific Ocean Part Iv Spawning Populations Of North Pacific Salmon PDF Download
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Author | : International North Pacific Fisheries Commission |
Publisher | : |
Total Pages | : |
Release | : 1967 |
Genre | : |
ISBN | : |
Download Salmon of the North Pacific Ocean - Part 4: Spawning Populations of North Pacific Salmon Book in PDF, ePub and Kindle
Author | : International North Pacific Fisheries Commission |
Publisher | : |
Total Pages | : |
Release | : 1967 |
Genre | : |
ISBN | : |
Download Salmon of the North Pacific Ocean. Part IV. Spawning Populations of North Pacific Salmon Book in PDF, ePub and Kindle
Author | : International North Pacific Fisheries Commission |
Publisher | : |
Total Pages | : 327 |
Release | : 1967 |
Genre | : |
ISBN | : |
Download Salmon of the North Pacific Ocean - Pt.4 - Spawning Populations of North Pacific Salmon, 1 Book in PDF, ePub and Kindle
Author | : International North Pacific Fisheries Commission |
Publisher | : |
Total Pages | : |
Release | : 1967 |
Genre | : Fishes |
ISBN | : |
Download Salmon of the North Pacific Ocean Book in PDF, ePub and Kindle
Author | : Cornelis Groot |
Publisher | : UBC Press |
Total Pages | : 602 |
Release | : 1991 |
Genre | : Nature |
ISBN | : 9780774803595 |
Download Pacific Salmon Life Histories Book in PDF, ePub and Kindle
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 | : |
Publisher | : |
Total Pages | : 274 |
Release | : 1969 |
Genre | : Animals |
ISBN | : |
Download Circular Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 264 |
Release | : 2000 |
Genre | : Anadromous fishes |
ISBN | : |
Download Biological Characteristics and Population Status of Anadromous Salmon in Southeast Alaska Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 922 |
Release | : 1965 |
Genre | : Fishing |
ISBN | : |
Download Resource Publication Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 448 |
Release | : 1969 |
Genre | : Fisheries |
ISBN | : |
Download Progress in Sport Fishery Research Book in PDF, ePub and Kindle
Author | : United States. Bureau of Commercial Fisheries |
Publisher | : |
Total Pages | : 758 |
Release | : 1965 |
Genre | : Fisheries |
ISBN | : |
Download Report of the Bureau of Commercial Fisheries Book in PDF, ePub and Kindle