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• 71. [Image] Rainbow trout

  	Side view of a dead rainbow trout in the grass.
  	Citation × Citation Citation Abstract Copy Title: Rainbow trout Author: Finley, William L. (William Lovell), 1876-1953 Year: 1905 Side view of a dead rainbow trout in the grass. Title: Rainbow trout Author: Finley, William L. (William Lovell), 1876-1953 Year: 1905 Side view of a dead rainbow trout in the grass. Close

• 72. [Image] Rainbow trout

  	A rainbow trout under the water.
  	Citation × Citation Citation Abstract Copy Title: Rainbow trout Author: Finley, William L. (William Lovell), 1876-1953 Year: 1905 A rainbow trout under the water. Title: Rainbow trout Author: Finley, William L. (William Lovell), 1876-1953 Year: 1905 A rainbow trout under the water. Close

• 73. [Image] Rainbow trout

  	A rainbow trout under the water.
  	Citation × Citation Citation Abstract Copy Title: Rainbow trout Author: Finley, William L. (William Lovell), 1876-1953 Year: 1905 A rainbow trout under the water. Title: Rainbow trout Author: Finley, William L. (William Lovell), 1876-1953 Year: 1905 A rainbow trout under the water. Close

• 74. [Article] A Trout Management Program for the Main Stem Lower Deschutes River 1978

  Abstract -- The Deschutes River is a north flowing tributary of the Columbia River in Central Oregon and is a designated scenic waterway. Summer run steelhead and resident trout are the most important ...

  Citation × Citation Citation Abstract Copy Title: A Trout Management Program for the Main Stem Lower Deschutes River 1978 Abstract -- The Deschutes River is a north flowing tributary of the Columbia River in Central Oregon and is a designated scenic waterway. Summer run steelhead and resident trout are the most important species to the local recreational fishery, although significant numbers of spring, summer, and fall chinook are also taken from the river. The salmon contribute significantly to fisheries in the Pacific Ocean and Columbia River and steelhead enter fisheries in the Columbia. The Deschutes also supports a good population of whitefish, lesser numbers of other trout species, small runs of coho and sockeye salmon, and several species of nongame fish. Title: A Trout Management Program for the Main Stem Lower Deschutes River 1978 Abstract -- The Deschutes River is a north flowing tributary of the Columbia River in Central Oregon and is a designated scenic waterway. Summer run steelhead and resident trout are the most important species to the local recreational fishery, although significant numbers of spring, summer, and fall chinook are also taken from the river. The salmon contribute significantly to fisheries in the Pacific Ocean and Columbia River and steelhead enter fisheries in the Columbia. The Deschutes also supports a good population of whitefish, lesser numbers of other trout species, small runs of coho and sockeye salmon, and several species of nongame fish. Close

• 75. [Article] Fish Management Plan North Fork of Middle Fork Willamette River 1979

  Abstract -- The North Fork is a moderate-sized tributary originating at Waldo Lake and entering the Middle Fork Willamette near the town of Oakridge. The river and its tributaries contain approximately ...

  Citation × Citation Citation Abstract Copy Title: Fish Management Plan North Fork of Middle Fork Willamette River 1979 Abstract -- The North Fork is a moderate-sized tributary originating at Waldo Lake and entering the Middle Fork Willamette near the town of Oakridge. The river and its tributaries contain approximately 160 miles of trout producing water. The habitat is generally capable of producing a good trout population. Native cutthroat and rainbow are present throughout the system and brook trout, having moved out of Waldo Lake, are found a short distance downstream. In July 1979, the Oregon Fish and Wildlife Commission accepted the Department's recommendation to continue to manage the North Fork, Middle Fork Willamette River for wild trout. The Commission concurrently imposed a fly angling only restriction to fishing in this stream. Title: Fish Management Plan North Fork of Middle Fork Willamette River 1979 Abstract -- The North Fork is a moderate-sized tributary originating at Waldo Lake and entering the Middle Fork Willamette near the town of Oakridge. The river and its tributaries contain approximately 160 miles of trout producing water. The habitat is generally capable of producing a good trout population. Native cutthroat and rainbow are present throughout the system and brook trout, having moved out of Waldo Lake, are found a short distance downstream. In July 1979, the Oregon Fish and Wildlife Commission accepted the Department's recommendation to continue to manage the North Fork, Middle Fork Willamette River for wild trout. The Commission concurrently imposed a fly angling only restriction to fishing in this stream. Close

• 76. [Article] A Report upon the Production and Management of Trout in the State of Oregon, with Recommendations for Increased Efficiency

  Abstract -- This report of the production of trout and the management of the game fisheries resources within the State of Oregon summarizes the observations made during a 5.5-month survey of these conditions ...

  Citation × Citation Citation Abstract Copy Title: A Report upon the Production and Management of Trout in the State of Oregon, with Recommendations for Increased Efficiency Abstract -- This report of the production of trout and the management of the game fisheries resources within the State of Oregon summarizes the observations made during a 5.5-month survey of these conditions extending through the spring and summer of 1934. This survey was financed jointly by the Oregon Game Commission and the Division of Scientific Inquiry, United States Bureau of Fisheries. Inasmuch as this survey was purposely confined to a study of the trout of Oregon, unless specifically stated to the contrary, all statements, criticisms, and recommendations included within this report are applicable only to trout, as it was neither the purpose nor the scope of this survey to include any other game animals. Title: A Report upon the Production and Management of Trout in the State of Oregon, with Recommendations for Increased Efficiency Abstract -- This report of the production of trout and the management of the game fisheries resources within the State of Oregon summarizes the observations made during a 5.5-month survey of these conditions extending through the spring and summer of 1934. This survey was financed jointly by the Oregon Game Commission and the Division of Scientific Inquiry, United States Bureau of Fisheries. Inasmuch as this survey was purposely confined to a study of the trout of Oregon, unless specifically stated to the contrary, all statements, criticisms, and recommendations included within this report are applicable only to trout, as it was neither the purpose nor the scope of this survey to include any other game animals. Close

• 77. [Image] Status of Oregon's bull trout : distribution, life history, limiting factors, management considerations, and status

  	EXECUTIVE SUMMARY Limited historical references indicate that bull trout Salvelinus confluentus in Oregon were once widely spread throughout at least 12 basins in the Klamath River and Columbia River ...
  	Citation × Citation Citation Abstract Copy Title: Status of Oregon's bull trout : distribution, life history, limiting factors, management considerations, and status Author: Buchanan, David V; Hanson, Mary L; Hooton, Robert M Year: 1997, 2007, 2005 EXECUTIVE SUMMARY Limited historical references indicate that bull trout Salvelinus confluentus in Oregon were once widely spread throughout at least 12 basins in the Klamath River and Columbia River systems. No bull trout have been observed in Oregon's coastal systems. A total of 69 bull trout populations in 12 basins are currently identified in Oregon. A comparison of the 1991 bull trout status (Ratliff and Ho well 1992) to the revised 1996 status found that 7 populations were newly discovered and 1 population showed a positive or upgraded status while 22 populations showed a negative or downgraded status. The general downgrading of 32% of Oregon's bull trout populations appears largely due to increased survey efforts and increased survey accuracy rather than reduced numbers or distribution. However, three populations in the upper Klamath Basin, two in the Walla Walla Basin, and one in the Willamette Basin showed decreases in estimated population abundance or distribution. Some Oregon river basins have bull trout populations at extreme risk of extinction. This statewide status review listed only 19% of the bull trout populations in Oregon with a ulow risk of extinction" or "of special concern." Therefore, 81% of Oregon's bull trout populations are considered to be at a "moderate risk of extinction," "high risk of extinction," or "probably extinct." Populations in the Hood, Klamath, and Powder basins, as well as the Odell Lake population in the Deschutes basin, which contain only a few remaining bull trout, are examples of populations having a "moderate" or "high risk" of extinction. Approximately 55% of current bull trout distribution occurs on lands managed by the U.S. Forest Service. A much smaller proportion occurs on Bureau of Land Management managed lands (2%). Only 16% of current bull trout distribution occurs within a protected area defined as Wilderness, Wild and Scenic River, or within a National Park. The Northwest Forest Plan, Inland Native Fish Strategy, and Interim Strategies for Managing Anadromous Fish-producing Watersheds in Eastern Oregon and Washington, Idaho, and Portions of California have provided increased protection for bull trout habitat depending on their scope and geographic areas affected, and the extent to which they are being effectively implemented in watersheds containing bull trout. Recent reduction in timber production on National Forests (up to 50% in western Oregon National Forests and over 30% in eastern Oregon National Forests) should help improve riparian and stream habitat conditions for bull trout. The remaining bull trout distribution occurs on private, state, or tribal owned lands. A comparison of approximately 39 locations throughout the state with protective angling regulations on bull trout (in some areas more than one bull trout population is protected by one regulation) shows that all state managed areas were upgraded in a protective angling status or at least maintained in 1996 compared to 1989. Restrictive angling regulations prohibit angler harvest of all bull trout populations in Oregon except for one in the Deschutes Basin. Restrictive bull trout angling regulation changes (including the elimination of bull Vll trout harvest in all spawning areas) may be the major reasons why the Metolius River/Lake Billy Chinook and mainstem McKenzie River populations have shown significant increases in abundance. Statewide stocking of non-native brook trout, including the high lakes stocking program, has been discontinued in locations where managers believe brook trout could migrate downstream and potentially interact with native bull trout. Hatchery stocking of legal rainbow trout to promote recreational fisheries has been discontinued in most locations near bull trout populations to avoid incidental catch of bull trout. The spatial and temporal distributions of bull trout reported for each river basin in this status report should be used as an accurate baseline for fisheries managers. Current distribution and relative change of distribution should be useful indicators of population health and status. The GIS maps in this report provide a template to add new layers of data such as critical spawning and juvenile rearing areas, or as a method to compare distribution changes through time. Length frequency data are presented for most Oregon bull trout populations. This should provide estimates for the presence of multiple age classes and the percent of fluvial size life history component. Vlll Title: Status of Oregon's bull trout : distribution, life history, limiting factors, management considerations, and status Author: Buchanan, David V; Hanson, Mary L; Hooton, Robert M Year: 1997, 2007, 2005 EXECUTIVE SUMMARY Limited historical references indicate that bull trout Salvelinus confluentus in Oregon were once widely spread throughout at least 12 basins in the Klamath River and Columbia River systems. No bull trout have been observed in Oregon's coastal systems. A total of 69 bull trout populations in 12 basins are currently identified in Oregon. A comparison of the 1991 bull trout status (Ratliff and Ho well 1992) to the revised 1996 status found that 7 populations were newly discovered and 1 population showed a positive or upgraded status while 22 populations showed a negative or downgraded status. The general downgrading of 32% of Oregon's bull trout populations appears largely due to increased survey efforts and increased survey accuracy rather than reduced numbers or distribution. However, three populations in the upper Klamath Basin, two in the Walla Walla Basin, and one in the Willamette Basin showed decreases in estimated population abundance or distribution. Some Oregon river basins have bull trout populations at extreme risk of extinction. This statewide status review listed only 19% of the bull trout populations in Oregon with a ulow risk of extinction" or "of special concern." Therefore, 81% of Oregon's bull trout populations are considered to be at a "moderate risk of extinction," "high risk of extinction," or "probably extinct." Populations in the Hood, Klamath, and Powder basins, as well as the Odell Lake population in the Deschutes basin, which contain only a few remaining bull trout, are examples of populations having a "moderate" or "high risk" of extinction. Approximately 55% of current bull trout distribution occurs on lands managed by the U.S. Forest Service. A much smaller proportion occurs on Bureau of Land Management managed lands (2%). Only 16% of current bull trout distribution occurs within a protected area defined as Wilderness, Wild and Scenic River, or within a National Park. The Northwest Forest Plan, Inland Native Fish Strategy, and Interim Strategies for Managing Anadromous Fish-producing Watersheds in Eastern Oregon and Washington, Idaho, and Portions of California have provided increased protection for bull trout habitat depending on their scope and geographic areas affected, and the extent to which they are being effectively implemented in watersheds containing bull trout. Recent reduction in timber production on National Forests (up to 50% in western Oregon National Forests and over 30% in eastern Oregon National Forests) should help improve riparian and stream habitat conditions for bull trout. The remaining bull trout distribution occurs on private, state, or tribal owned lands. A comparison of approximately 39 locations throughout the state with protective angling regulations on bull trout (in some areas more than one bull trout population is protected by one regulation) shows that all state managed areas were upgraded in a protective angling status or at least maintained in 1996 compared to 1989. Restrictive angling regulations prohibit angler harvest of all bull trout populations in Oregon except for one in the Deschutes Basin. Restrictive bull trout angling regulation changes (including the elimination of bull Vll trout harvest in all spawning areas) may be the major reasons why the Metolius River/Lake Billy Chinook and mainstem McKenzie River populations have shown significant increases in abundance. Statewide stocking of non-native brook trout, including the high lakes stocking program, has been discontinued in locations where managers believe brook trout could migrate downstream and potentially interact with native bull trout. Hatchery stocking of legal rainbow trout to promote recreational fisheries has been discontinued in most locations near bull trout populations to avoid incidental catch of bull trout. The spatial and temporal distributions of bull trout reported for each river basin in this status report should be used as an accurate baseline for fisheries managers. Current distribution and relative change of distribution should be useful indicators of population health and status. The GIS maps in this report provide a template to add new layers of data such as critical spawning and juvenile rearing areas, or as a method to compare distribution changes through time. Length frequency data are presented for most Oregon bull trout populations. This should provide estimates for the presence of multiple age classes and the percent of fluvial size life history component. Vlll Close

• 78. [Article] Integration and Causality in Demand: Farmed Trout in Germany

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Integration and Causality in Demand: Farmed Trout in Germany Author: Honkanen, Asmo, Nielsen, Max, Virtanen, Jarno, Setala, Jari, Laitinen, Jukka, Saarni, Kaija Research Paper Title: Integration and Causality in Demand: Farmed Trout in Germany Author: Honkanen, Asmo, Nielsen, Max, Virtanen, Jarno, Setala, Jari, Laitinen, Jukka, Saarni, Kaija Research Paper Close

• 79. [Article] Annual progress report: Salmon and Trout Enhancement Program

  This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.

  Citation × Citation Citation Abstract Copy Title: Annual progress report: Salmon and Trout Enhancement Program Year: 1986 This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes. Title: Annual progress report: Salmon and Trout Enhancement Program Year: 1986 This archived document is maintained by the Oregon State Library as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes. Close

• 80. [Article] Molecular cloning and sequence analysis of cystatin from rainbow trout (Oncorhynchus mykiss)

  A partial cystatin cDNA from rainbow trout was generated by reverse transcription polymerase chain reaction with two degenerate primers. The partial cystatin PCR product was 168 bp and used to screen trout ...

  Citation × Citation Citation Abstract Copy Title: Molecular cloning and sequence analysis of cystatin from rainbow trout (Oncorhynchus mykiss) Author: Li, Fugen A partial cystatin cDNA from rainbow trout was generated by reverse transcription polymerase chain reaction with two degenerate primers. The partial cystatin PCR product was 168 bp and used to screen trout liver λgt 11 cDNA library. Four positive clones were isolated and designated as cstl, cst2, cst3 and cst4. Only cst2 contained the full-length cystatin cDNA which was 674 bp and included 5' untranslated region and the polyadenylation signal sequence AATAAA in the 3' region. Translation of the cDNA contains 132 amino acid residues. Comparison of the amino acid sequence with those of family II cystatin indicated that the 21 amino acids at N-terminal end is a signal peptide that leads to cystatin secretion, and the 111 amino acids are mature cystatin. Four cysteine residues in the cystatin may form two disulfide bonds for the secondary structure. Cst2 was subcloned into pGEM-3z for Northern and Southern blot experiments. Northern blot indicated that trout cystatin mRNA is about 750 bp. Cystatin is expressed in all tissues examined but at various levels. This difference may reflect the regulation of cysteine proteinase activities. Southern blot of trout genomic DNA showed that the copy number of the trout cystatin gene is probably one per haploid genome. Title: Molecular cloning and sequence analysis of cystatin from rainbow trout (Oncorhynchus mykiss) Author: Li, Fugen A partial cystatin cDNA from rainbow trout was generated by reverse transcription polymerase chain reaction with two degenerate primers. The partial cystatin PCR product was 168 bp and used to screen trout liver λgt 11 cDNA library. Four positive clones were isolated and designated as cstl, cst2, cst3 and cst4. Only cst2 contained the full-length cystatin cDNA which was 674 bp and included 5' untranslated region and the polyadenylation signal sequence AATAAA in the 3' region. Translation of the cDNA contains 132 amino acid residues. Comparison of the amino acid sequence with those of family II cystatin indicated that the 21 amino acids at N-terminal end is a signal peptide that leads to cystatin secretion, and the 111 amino acids are mature cystatin. Four cysteine residues in the cystatin may form two disulfide bonds for the secondary structure. Cst2 was subcloned into pGEM-3z for Northern and Southern blot experiments. Northern blot indicated that trout cystatin mRNA is about 750 bp. Cystatin is expressed in all tissues examined but at various levels. This difference may reflect the regulation of cysteine proteinase activities. Southern blot of trout genomic DNA showed that the copy number of the trout cystatin gene is probably one per haploid genome. Close