Download or read book Tustumena Lake Sockeye Salmon Investigation 1991 Annual Report written by G. L. Todd and published by . This book was released on 1991 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Summarizes data collected during the period 1 July 1990-30 June 1991 relative to assessing the hatchery-stocking project through monitoring juvenile and adult sockeye salmon production and changes in limnological parameters in Tustumena Lake"--P. 3.
Download or read book Tustumena Lake Sockeye Salmon Investigation 1992 Annual Report written by Gary L. Todd and published by . This book was released on 1992 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FRED Annual Report to the Alaska State Legislature written by Alaska. Division of Fisheries Rehabilitation, Enhancement, and Development and published by . This book was released on 1989 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alaska Fishery Research Bulletin written by and published by . This book was released on 1997 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Management Plan Kenai National Wildlife Refuge FY 1995 1999 written by U.S. Fish and Wildlife Service. Kenai Fishery Resource Office and published by . This book was released on 1995 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FRED Reports written by Alaska. Division of Fisheries Rehabilitation, Enhancement, and Development and published by . This book was released on 1992 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sockeye Salmon Investigations and Limnological Sampling on Tustumena Lake written by Gary L. Todd and published by . This book was released on 1996 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alaska Salmon Research written by Donald E. Rogers and published by . This book was released on 1992 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tustumena Lake Project Report Sockeye Salmon Investigations fall 1992 1993 written by Gary L. Todd and published by . This book was released on 1994 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tustumena Lake Sockeye Salmon Studies 1988 Annual Report written by Gary B. Kyle and published by . This book was released on 1987 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tustumena Lake Project Report Sockeye Salmon Investigations fall 1992 1993 written by Gary L. Todd and published by . This book was released on 1994 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tustumena Lake Sockeye Salmon Studies 1990 Annual Report written by Patrick A. Shields and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: In mid-September 1989 sockeye salmon samples were taken through townet surveys, limnological surveys, and escapement counts in at Tustumena Lake on the Kenai Peninsula. The goals were to determine factors affecting productive capacity and to determine appropriate annual stocking levels of fingerlings.
Download or read book Research and Recovery of Snake River Sockeye Salmon 1994 1995 Annual Report written by and published by . This book was released on 1996 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1991, the National Marine Fisheries Service (NMFS) listed Snake River sockeye salmon Oncorhynchus nerka as endangered under the Endangered Species Act of 1973. Initial steps to recover the species include the establishment of captive broodstocks at the Idaho Department of Fish and Game (IDFG) Eagle Fish Hatchery in Eagle, Idaho. Research and recovery activities for sockeye salmon conducted by IDFG during the period of April 1994 to April 1995 are covered by this report. One female anadromous adult returned to the Redfish Lake Creek trap this year. She was spawned at Eagle Fish Hatchery on October 21, 1994. Her fecundity was 2,896. The mean fertilization rate and percent swim-up were 96% and 95%, respectively. Four hundred eighty eyed eggs were shipped to the NMFS Big Beef Creek Fish Hatchery in Washington state, leaving 2,028 fish on site at Eagle. Additionally, captive broodstock and wild residual sockeye salmon (captured at Redfish Lake) were spawned. Spawning data from 234 females spawned during this period are included in this report. Other spawning data (i.e., genetic cross and incubation temperature) are included in the Captive Broodstock Research section of this report.
Download or read book Tustumena Lake Salmon Investigations written by James Finn and published by . This book was released on 1991 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Four year study of sockeye salmon began in 1989 at Tustumena Lake to determine if spawning occurs within the lake proper, establish the timing of emergence and migration of fry from lateral tributaries, determine if differences exist between the growth and survivability of wild and hatchery-reared juveniles, assess the feasibility of using otolith microstructure to discriminate between wild and hatchery salmon, and determine if there are detectable genetic differences between various spawning populations in the lake.
Download or read book Snake River Sockeye Salmon Captive Broodstock Research Element 1993 Annual Report written by and published by . This book was released on 1995 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1991, the National Marine Fisheries Service listed Snake River sockeye salmon Oncorhynchus nerka as endangered under the Endangered Species Act of 1973. Initial steps to recover the species include the establishment of captive broodstocks at the Eagle Fish Hatchery in Eagle, Idaho. Research and recovery activities for sockeye conducted by the Idaho Department of Fish and Game during the period of April 1993 to April 1994 are covered by this report. Eight anadromous adults (two female and six male) returned to the Redfish Lake Creek trap this year and were spawned at the Sawtooth Hatchery near Stanley, Idaho. Fecundity was 3160 for each female. The mean fertilization rate was 52% for female {open_quotes}A{close_quotes} and 65% for female {open_quotes}B.{close_quotes} Captive broodstock also spawned as well as residual sockeye captured in a Merwin trap in Redfish Lake. Spawning data from 72 fish spawned during this period is included in this report. Captive broodstock also matured later than normal (winter and spring 1994). Fish were spawned and samples were taken to investigate reasons for poor fertilization rates. Twenty-four out migrants of 1991 were selected for return to Redfish Lake for volitional spawning. Releases were made in August of 1993. All fish were implanted with sonic tags and tracking of this group began soon after the release to identify spawning-related activities. A research project is being conducted on captive broodstock diets. The project will investigate the effect of diet modification on spawn timing, gamete quality, and fertilization rates. A second project used ultrasound to examine fish for sexual maturity. The goal was to obtain a group a fish to be released f or volitional spawning. A total of 44 fish were found to be mature. The performance of all captive groups held at Eagle are included in this report.
Download or read book Research and Recovery of Snake River Sockeye Salmon 1994 Annual Report written by and published by . This book was released on 1995 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: On November 20, 1991, the National Marine Fisheries Service listed Snake River sockeye salmon oncorhynchus nerka as endangered under the Endangered Species Act of 1973. In 1991, the Shoshone-Bannock Tribe and the Idaho Department of Fish and Game initiated the Snake River Sockeye Salmon Sawtooth Valley Project to conserve and rebuild populations in Idaho. In 1994, the authors estimated the total September Redfish Lake O. nerka population at 51,529 fish (95% CI, " 33,179). The Alturas Lake O. nerka population was estimated at 5,785 fish (" 6,919). The total density and biomass of Alturas Lake was estimated at 27 fish/hectare (" 33) and 0.7 kg/hectare, respectively. The total O. nerka population estimate for Pettit Lake was 14,743 fish (" 3,683). Stanley Lake O. nerka total population size, density, and biomass was estimated at 2,695 fish (" 963), 37 fish/hectare (" 13), and 0.5 kg/hectare, respectively. Estimated numbers of O. nerka outmigrant smolts passing Redfish Lake Creek and Salmon River trapping sites increased in 1994. The authors estimated 1,820 (90% CI 1,229--2,671) and 945 (90% CI 331--13,000) smolts left Redfish and Alturas lakes, respectively. The total PIT tag detection rate at mainstem dams for Redfish Lake outmigrants was 21% in 1994. No Alturas Lake outmigrants were detected at any of the downstream facilities with detection capabilities (zero of 50 fish).
Download or read book Snake River Sockeye Salmon Captive Broodstock Program Research Element written by and published by . This book was released on 2002 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: On November 20, 1991, the National Marine Fisheries Service listed Snake River sockeye salmon Oncorhynchus nerka as endangered under the Endangered Species Act of 1973. In 1991, the Shoshone-Bannock Tribes and Idaho Department of Fish and Game initiated the Snake River Sockeye Salmon Sawtooth Valley Project to conserve and rebuild populations in Idaho. Restoration efforts are focusing on Redfish, Pettit, and Alturas lakes within the Sawtooth Valley. The first release of hatchery-produced juvenile sockeye salmon from the captive broodstock program occurred in 1994. The first anadromous adult returns from the captive broodstock program were recorded in 1999 when six jacks and one jill were captured at Idaho Department of Fish and Game's Sawtooth Fish Hatchery. In 2000, progeny from the captive broodstock program were released using four strategies: eyed-eggs were placed in Pettit Lake; age-0 presmolts were released to all three lakes in October; age-1 smolts were released to Redfish Lake Creek, and hatchery-produced adult sockeye salmon were released to Redfish and Alturas lakes for volitional spawning in September. Anadromous adult sockeye salmon were released to all three lakes. Total kokanee abundance in Redfish Lake was estimated at 10,268, which was the lowest abundance since 1991. Abundance of kokanee in Alturas Lake was estimated at 125,462, which was one of the highest values recorded since 1991. Abundance of kokanee in Pettit Lake was estimated at 40,599, which is the third highest value recorded since 1991. Upon the recommendation of the Stanley Basin Sockeye Technical Oversight Committee, the National Marine Fisheries Service reopened the kokanee fishery on Redfish Lake in 1995 in an attempt to reduce kokanee numbers. Anglers fished an estimated 3,063 hours and harvested approximately 67 kokanee during the 2000 season. Angler effort and harvest were also monitored on Alturas Lake during 2000. Effort on Alturas Lake was 5,190 hours, and harvest of kokanee was 407 fish. Anglers harvested an estimated 11% of the catchable rainbow trout planted into Alturas Lake. The out-migrant trap on Redfish Lake Creek was operated from April 12 to June 14, 2000. A total of 126 wild/natural and 2,378 hatchery-produced sockeye salmon smolts were captured, and total out-migration was estimated at 302 wild/natural and 6,926 hatchery-produced smolts. Estimates of smolt out-migration to Lower Granite Dam (LGR) were made by release strategy and were based on PIT-tag interrogations. An estimated 115 wild/natural smolts passed LGR from Redfish Lake. An estimated 6,987 hatchery-produced smolts released as presmolts into Sawtooth basin lakes passed LGR. None of the 148 age-1 smolts released to Redfish Lake Creek were detected at LGR. Two hundred fifty-seven anadromous sockeye returned to the Sawtooth basin in 2000. All were progeny of the captive broodstock program. The majority (200) of the adults that returned were released back to lakes in the basin for natural spawning along with hatchery produced adults. Redfish Lake received 164 adult sockeye salmon, and 20 to 29 areas of excavation were sighted. Alturas Lake received 77 adult sockeye salmon, and 14 to 19 areas of excavation were sighted. Pettit Lake received 28 adult sockeye salmon. No areas of excavation were noted in Pettit Lake, but spawning was suspected to have occurred in water too deep for observation. ndex reaches on principal tributary streams of Redfish and Alturas lakes were surveyed in August and September 2000 to track bull trout population response to no-harvest fishing regulations. Similar numbers of adult bull trout were observed in both systems, but twice as many redds were observed in Fishhook Creek. Redd counts in both streams have increased since monitoring began in 1998.
