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Download the fantastic book titled Pacific Salmon Life Histories written by Cornelis Groot, available in its entirety in both PDF and EPUB formats for online reading. This page includes a concise summary, a preview of the book cover, and detailed information about "Pacific Salmon Life Histories", which was released on 16 June 1991. We suggest perusing the summary before initiating your download. This book is a top selection for enthusiasts of the Nature genre.

Summary of Pacific Salmon Life Histories by Cornelis Groot PDF

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.


Detail About Pacific Salmon Life Histories PDF

  • Author : Cornelis Groot
  • Publisher : UBC Press
  • Genre : Nature
  • Total Pages : 602 pages
  • ISBN : 9780774803595
  • PDF File Size : 11,6 Mb
  • Language : English
  • Rating : 4/5 from 21 reviews

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Pacific Salmon Life Histories

Pacific Salmon Life Histories
  • Publisher : UBC Press
  • File Size : 35,9 Mb
  • Release Date : 16 June 1991
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Destruction of habitat is the major cause for loss of biodiversity including variation in life history and habitat ecology. Each species and population adapts to its environment, adaptations visible in