My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
9328
CWCB
>
UCREFRP
>
Public
>
9328
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
7/14/2009 5:02:34 PM
Creation date
5/18/2009 12:28:51 AM
Metadata
Fields
Template:
UCREFRP
UCREFRP Catalog Number
9328
Author
Miller, W. H.
Title
Analysis of Salmon and Steelhead Supplementation.
USFW Year
1990.
USFW - Doc Type
\
Copyright Material
NO
Jump to thumbnail
< previous set
next set >
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
242
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
Show annotations
View images
View plain text
back to areas just for a specific type of harvest -sport,- commercial or subsistence. Fry, <br />fingerling, and smolts are released directly into ocean bays, small streams, lakes or rivers <br />to key adults back to a terminal fishery. <br />Alaska's hatchery program is rated quite successful because it is providing more stability <br />in the commercial fisheries program. In 1987, roughly 25 percent of the total statewide <br />salmon harvest was from salmon produced by public programs (FRED & PNP). In 1988, <br />this figure was 24 percent (Hartman et al. 1988). To separate wild from hatchery stocks- <br />in amixed stock fishery, many hatchery fish are marked with coded-wire tags (CWT). In <br />some fisheries, hatchery fish are separated by timing into a fishery area and by location <br />of return. Overall, fisheries management in Alaska is directed primarily for wild fish <br />escapement with hatchery releases directed for harvest augmentation.l <br />We reviewed 24 projects in Alaska; 2 were considered true supplementation, both were <br />evaluated. <br />Steelhead <br />Very little steelhead supplementation has occurred in Alaska. No specific evaluation <br />information was found. <br />Chinook <br />Hatchery chinook salmon programs have nat been as successful as some of the other <br />hatchery programs in Alaska. When comparing adult returns with the Columbia River <br />system, Alaska does as well or better. Chinook salmon adult returns in the 2-4 percent <br />range from smolt plants have been common (Dudiak and. Boyle 1988). Alaska biologists <br />expect to get 3 percent or better adult returns for smolt releases of chinook, coho, and <br />sockeye salmon. Programs to build fisheries in selected areas for chinook salmon harvest <br />has worked quite well in Alaska. Chinook salmon smolt releases in Prince William <br />Sound return in the 4-5 percent range? <br />Alaskan biologists use indigenous broodstock almost exclusively for supplementation. <br />Fry, fingerling and smolts have been outplanted to natural areas. In the Kasilof River, <br />biologists have stocked chinook salmon smolts into areas with wild stock and noted no <br />impacts on wild stocks. They did note that survival of hatchery fish was about one-half <br />of what they thought it should be (Kyle and Litchfield 1989). <br />1Keith Pratt, FRED Divisions, Alaska Department of Fish and Game, Anchorage, <br />Alaska, pers. comm., February, 1990. <br />2Bruce Suzumota, Prince William Sound Aquaculture Association, pers. comm., <br />February, 1990. <br />23 <br />
The URL can be used to link to this page
Your browser does not support the video tag.