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icthyology

The number of Pacific salmon has declined dramatically in the last thirty years. By the 1990’s, the U.S. Endangered Species Act registered 26 kinds of salmon as in danger of extinction. Salmon are in the trout family, Salmonidae. There are several species of Pacific salmon all in the genus Oncorhynchus: Chinook salmon (O. tshawytscha), Chum (O. keta), Coho (O. kisutch), Pink (O. grobuscha), and Sockeye (O. nerka) salmon. Competition for land and water affect the salmon habitat. The building of dams, land irrigation, mining, logging, cattle grazing, and over fishing contribute to the destruction. The goal of environmentalists at the Northwest Fisheries Science Center is to determine whether or not artificial propagation of salmon populations is assisting in the conservation of salmon or contributing to the demise of wild salmon populations.(National Marine Fisheries Service, NWFSC, http://www.nwfsc.noaa.gov/pubs/tm/tm2/tm2.html) According to Jeff Dose, a fisheries biologist with 16 years of experience working in various areas of the Umpqua River basin, and employed by U.S. Forest Service in Rosenburg, Oregon, he states, “It is my firm belief that the present emphasis on hatchery production as a means of salmon recovery is counter-productive and should be reconsidered.” (Dose’s speech, 1995, http://www.umpqua-watersheds.org/speech_comment/dose.html) From studies run by the Northwest Fisheries Science Center and other environmental agencies, these salmon hatcheries that claim to increase populations, instead, pose a serious threat to salmon genetic diversity.


Approximate Word count = 800
Approximate Pages = 3.2
(250 words per page double spaced)
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