Typical salmon stream

Title: Typical salmon stream
LC Subject: Salmon
Description: This slide represents a typical salmon stream in which a few salmon may be observed ascending the river. A very interesting controversy has arisen over what is known as the "parent stream" theory. In years past it has been debated pro and con in a lively fashion. There are those who have contended that adult salmon ascend the stream in which they were hatched and which their parents ascended. According to this idea, some instinct is supposed to have a directive influence upon the fish as they approach maturity, drawing them into the river which they descended a few years before. For support of this contention it is pointed out that marked fish released as fry in a certain river have been taken in the same stream when adult. There is no denial on the part of those who oppose the "parent stream" theory that salmon are often taken as adults in the same stream in which they were hatched. In fact, this is only to be expected. Our knowledge concerning the salmon during their existence in the ocean is necessarily very limited. It is believed, however, that salmon do not go very far distant from the mouths of rivers which they descended, or that they confine their migrations during the period of growth to near-shore waters up and down the coast. When the period of maturity nears after a few years in the ocean, the salmon being near the mouths of rivers come in contact with the fresh waters of the streams that flow into the ocean with considerable force. The salmon are attracted by this current and make their way into the mouths of the rivers and begin the ascent of the streams. It is only natural that some may find their way into the same rivers which they descended three or four years before. It is believed by the better authorities that the "parent stream" phenomenon is explained as a natural result of the habits of the fish while in the sea. Salmon are taken for commercial purposes in many ways. It is only to be expected that in the case of fish so valuable as the salmon many devices would be employed for their capture. One of the methods of taking the salmon is by the fish wheel, as is illustrated by slides.
Work Type: lantern slides
Date: 1920/1930
Identifier: P217:28:49
Rights: In Copyright
Local Collection Name: Visual Instruction Department Lantern Slides, 1900-1940 (P 217)
Type: Image
Format: image/tiff
Set: OSU Special Collections & Archives Research Center
Primary Set: OSU Special Collections & Archives Research Center
Is Part Of: Set 43 - Salmon Industry
Institution: Oregon State University
Note: Glass is cracked Hand-tinted