Hormonal Regulation of Smolt Transformation and Olfactory Imprinting in Coho Salmon - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Hormonal Regulation of Smolt Transformation and Olfactory Imprinting in Coho Salmon write by Allan T. Scholz. This book was released on 1980. Hormonal Regulation of Smolt Transformation and Olfactory Imprinting in Coho Salmon available in PDF, EPUB and Kindle.
Hormonal Regulation of Smolt Transformation and Olfactory Imprinting in Coho Salmon
Hormonal Regulation of Smolt Transformation and Olfactory Imprinting in Coho Salmon - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Hormonal Regulation of Smolt Transformation and Olfactory Imprinting in Coho Salmon write by Allan T. Scholz. This book was released on 1980. Hormonal Regulation of Smolt Transformation and Olfactory Imprinting in Coho Salmon available in PDF, EPUB and Kindle.
Olfactory Imprinting and Homing in Salmon
Olfactory Imprinting and Homing in Salmon - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Olfactory Imprinting and Homing in Salmon write by A.D. Hasler. This book was released on 2012-12-06. Olfactory Imprinting and Homing in Salmon available in PDF, EPUB and Kindle. Chance Favors Only the Prepared Mind How does a scientist go about the task of pushing back the curtains of the unknown? Certainly the romance of tackling the mysteries of nature provides the motivation, for who would not be inspired by the remarkable life history of this romantic beast, the salmon. After living in the Pacific Ocean for several years, salmon swim thousands of kilometers back to the stream of their birth to spawn. I have always been fascinated by the homing migration of salmon. Noone who has seen a 20-kilogram salmon fling itself into the air repeatedly until it is exhausted in a vain effort to surmount a waterfall can fail to marvel at the strength of the instinct that draws the salmon upriver to the stream where it was born. But how does it find its way back? I was puzzling over this problem during a family vacation in 1946. Inspired by the work of the great German Nobel Laureates, Karl von Frisch and Konrad Lorenz, I had been conducting research with my graduate student Theodore Walker, since 1945, on the ability of fishes to discriminate odors emanating from aquatic plants. Von Frisch had studied schooling minnows and discovered that, if broken, their skin emitted a con specific chemical substance, termed Schreckstoff, which caused other members of its school to disperse and hide.
The Control of Fish Migration
The Control of Fish Migration - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook The Control of Fish Migration write by R.J.F. Smith. This book was released on 2012-12-06. The Control of Fish Migration available in PDF, EPUB and Kindle. Fish migration is important and spectacular. Migratory fish gather energy in one portion of the environment and transport it to other areas, where it often becomes available to humans or to other elements in the ecosystem. Migration brings fish into situations that allow easy harvest as they concentrate along migration routes. Their journeys also make them vulnerable to human intereference at critical points along their route. Salmon, for example, may harvest plankton in the open ocean and transport that food energy to coastal and inland regions, where it is captured by fisheries or deposited in inland streams and utilized by the flora and fauna of the region. These salmon are able to complete journeys of thousands of kilometers from their natal streams to oceanic feeding grounds and back to the same home streams, an accomplishment that strains our credi bili ty . We now understand some of the timing and guiding stimuli used in these migrations, and mechanisms can be logically proposed, on the basis of the established abilities of fishes, to account for the unexplained portions of the migrations. There is no single factor guiding these fish. Instead, they are dependent on the presence in their environment of a great variety of appropriate orienting and timing stimuli. These stimuli are vulnerable to human interference. The more widespread and easily available the information on these requirements, the more readily fish can be protected from such interference.
Sport Fishery Abstracts
Sport Fishery Abstracts - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Sport Fishery Abstracts write by . This book was released on 1981. Sport Fishery Abstracts available in PDF, EPUB and Kindle.
