Author: Robert Leroy DemoryPublisher:
ISBN:
Category : Fishes
Languages : en
Pages : 310
Book Description
Spawning Ground Catalog of the Kvichak River System, Bristol Bay, Alaska
Author: Robert Leroy DemoryPublisher:
ISBN:
Category : Fishes
Languages : en
Pages : 310
Book Description
Book Catalog of the Library and Information Services Division: Author-title-series indexes
Author: Environmental Science Information Center. Library and Information Services DivisionPublisher:
ISBN:
Category : Book catalogs
Languages : en
Pages : 512
Book Description
Circular
Author: Publisher:
ISBN:
Category : Wildlife conservation
Languages : en
Pages : 944
Book Description
Special Scientific Report
Author: Book catalog of the Library and Information Services Division
Author: Environmental Science Information Center. Library and Information Services DivisionPublisher:
ISBN:
Category :
Languages : en
Pages : 582
Book Description
Fishery Bulletin of the
Author: Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1732
Book Description
Book Catalog of the Library and Information Services Division: Shelf list catalog
Author: Environmental Science Information Center. Library and Information Services DivisionPublisher:
ISBN:
Category : Book catalogs
Languages : en
Pages : 584
Book Description
Pacific Salmon Life Histories
Author: Cornelis GrootPublisher: 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.
Monthly Catalog of United States Government Publications, Cumulative Index
Author: United States. Superintendent of DocumentsPublisher:
ISBN:
Category : United States
Languages : en
Pages : 1250
Book Description