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Butte Creek Spring Run Chinook Salmon Oncorhynchus Tshawytscha Pre Spawn Mortality Evaluation 2003
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Book Synopsis Butte Creek Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Pre-spawn Mortality Evaluation, 2003 by : Paul D. Ward
Download or read book Butte Creek Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Pre-spawn Mortality Evaluation, 2003 written by Paul D. Ward and published by . This book was released on 2004 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Butte and Big Chico Creeks Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Life History Investigation, 2002-2003 by : Paul D. Ward
Download or read book Butte and Big Chico Creeks Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Life History Investigation, 2002-2003 written by Paul D. Ward and published by . This book was released on 2004 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Butte Creek Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Juvenile Outmigration and Life History, 1995-1998 by : Katherine A. Hill
Download or read book Butte Creek Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Juvenile Outmigration and Life History, 1995-1998 written by Katherine A. Hill and published by . This book was released on 1999 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Butte Creek Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Juvenile Outmigration and Life History, 1994-1998 by : Katherine A. Hill
Download or read book Butte Creek Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Juvenile Outmigration and Life History, 1994-1998 written by Katherine A. Hill and published by . This book was released on 1999 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Survival of Captured and Relocated Adult Spring-run Chinook Salmon Oncorhynchus Tshawytscha in a Sacramento River Tributary After Cessation of Migration by : Christopher M. Mosser
Download or read book Survival of Captured and Relocated Adult Spring-run Chinook Salmon Oncorhynchus Tshawytscha in a Sacramento River Tributary After Cessation of Migration written by Christopher M. Mosser and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficacy of the methodology used for capture and upstream relocation of 26 adult spring-run Chinook salmon in Butte Creek, California in 2009 was evaluated. The fish had ceased volitional upstream migration prior to reaching their summer holding habitat. The purpose of the relocation was to move fish upstream of two water diversion dams and release them in a part of the stream from which they could presumably swim to cool summer holding habitat, then spawn in the fall. Fish were netted, transported by truck, given an esophageal radio tag/temperature tag, and released. Radio tagging proved to be a useful technique for determining the survival and movement of relocated fish and temperature tags provide useful information to determine thermal exposure and time of death. Twenty-three tags (88%) were recovered, compared with a 10% tag recovery rate for an earlier study using fin clips. Most tags were recovered within 3.5 km upstream and 1 km downstream of the release site. A single tag was recovered 6 km upstream. No fish were determined to have survived to spawn. Temperature tag data indicate that most of the salmon died within 2-6 days after the relocation operation. After preventative measures have been exhausted, future relocations efforts, in any setting, should consider (1) intervention as soon as fish cease volitional migration but before they are exposed to further deleterious conditions (2) monitoring environmental conditions to choose appropriate release sites (3) evaluation of disease transmission risk, and (4) handling practices that minimize potential stress due to air immersion and thermal shock.
Book Synopsis Butte and Big Chico Creeks Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Life History Investigation by :
Download or read book Butte and Big Chico Creeks Spring-run Chinook Salmon, Oncorhynchus Tshawytscha, Life History Investigation written by and published by . This book was released on 1998 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spring-run Chinook Salmon Annual Report by :
Download or read book Spring-run Chinook Salmon Annual Report written by and published by . This book was released on 2000 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Spring Chinook Salmon Spawning in Big Butte Creek, 2008 by :
Download or read book Evaluation of Spring Chinook Salmon Spawning in Big Butte Creek, 2008 written by and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Factors Influencing the Return of Fall Chinook Salmon (Oncorhynchus Tshawytscha) to Spring Creek Hatchery by : Charles O. Junge
Download or read book Factors Influencing the Return of Fall Chinook Salmon (Oncorhynchus Tshawytscha) to Spring Creek Hatchery written by Charles O. Junge and published by . This book was released on 1963 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tucannon River Spring Chinook Salmon Hatchery Evaluation Program ... Annual Report by :
Download or read book Tucannon River Spring Chinook Salmon Hatchery Evaluation Program ... Annual Report written by and published by . This book was released on 2006 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Opinion on the Long-term Central Valley Project and State Water Project Operations Criteria and Plan by :
Download or read book Biological Opinion on the Long-term Central Valley Project and State Water Project Operations Criteria and Plan written by and published by . This book was released on 2004 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pre-spawn Mortality of Upper Willamette River Spring Chinook Salmon by : Adrienne Grace Roumasset
Download or read book Pre-spawn Mortality of Upper Willamette River Spring Chinook Salmon written by Adrienne Grace Roumasset and published by . This book was released on 2012 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spawning Success of Hatchery Spring Chinook Salmon Outplanted as Adults in the Clearwater River Basin, Idaho, 2001 by :
Download or read book Spawning Success of Hatchery Spring Chinook Salmon Outplanted as Adults in the Clearwater River Basin, Idaho, 2001 written by and published by . This book was released on 2002 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study described in this report evaluated spawning distribution, overlap with naturally-arriving spawners, and pre-spawning mortality of spring chinook salmon, Oncorhynchus tshawytscha, outplanted as adults in the Clearwater River Subbasin in 2001. Returns of spring chinook salmon to Snake River Basin hatcheries and acclimation facilities in 2001 exceeded needs for hatchery production goals in Idaho. Consequently, management agencies including the U.S. Fish and Wildlife Service (FWS), Idaho Department of Fish and Game (IDFG) and Nez Perce Tribe (NPT) agreed to outplant chinook salmon adults as an adaptive management strategy for using hatchery adults. Adult outplants were made in streams or stream sections that have been typically underseeded with spawners. This strategy anticipated that outplanted hatchery chinook salmon would spawn successfully near the areas where they were planted, and would increase natural production. Outplanting of adult spring chinook salmon from hatcheries is likely to be proposed in years when run sizes are similar to those of the 2001 run. Careful monitoring of results from this year's outplanting can be used to guide decisions and methods for future adult outplanting. Numbers of spring chinook salmon outplanted was based on hatchery run size, hatchery needs, and available spawning habitat. Hatcheries involved in outplanting in the Clearwater Basin included Dworshak National Fish Hatchery, Kooskia National Fish Hatchery, Clearwater Anadromous Fish Hatchery, and Rapid River Fish Hatchery. The NPT, IDFG, FWS, and the National Marine Fisheries Service (NMFS) agreed upon outplant locations and a range of numbers of spring chinook salmon to be outplanted (Table 1). Outplanting occurred mainly in the Selway River Subbasin, but additional outplants were made in tributaries to the South Fork Clearwater River and the Lochsa River (Table 1). Actual outplanting activities were carried out primarily by the NPT with supplemental outplanting done in the Lochsa basin by IDFG. Fish were trucked from the hatcheries to outplant sites.
Book Synopsis Cool, Pathogen Free Refuge Lowers Pathogen Associated Prespawn Mortality of Willamette River Chinook Salmon (Oncorhynchus Tshawytscha) by : Susan Eileen Benda
Download or read book Cool, Pathogen Free Refuge Lowers Pathogen Associated Prespawn Mortality of Willamette River Chinook Salmon (Oncorhynchus Tshawytscha) written by Susan Eileen Benda and published by . This book was released on 2014 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spring Chinook salmon, Oncorhynchus tshawytscha, are transported above dams in the Willamette River to provide access to blocked spawning habitat. However, 30-95% of these transplants may die before spawning in some years. To varying degrees, salmon in other tributaries--both blocked and unblocked--have similar prespawn mortality (PSM). Our study determined if holding in constant temperature, pathogen free conditions prior to spawning increased survival to spawn. In addition, we evaluated pathogens as a potential cause of PSM. Adult Chinook were captured early and late in the season from the lower Willamette River and from upper river tributaries and held in constant, cool temperature (13 °C), pathogen-free water at Oregon State University. Additional fish were sampled at time of transport from each of the collection sites. Finally, recent mortalities were collected from river surveys on holding and spawning reaches above traps. Necropsies were performed on all fish, and samples were processed for histology. Held fish were spawned to determine if progeny were viable. Held fish were less likely to be a PSM than fish that were outplanted to the river. However, bacterial infections were more prevalent in held fish than outplanted fish. Consistent with these observations, PSM in held fish was more likely to have higher burdens of pathogens than spawned fish. Held spawned fish were more likely to have Myxobolus sp. brain infections and less likely to be infected with the kidney myxozoan Parvicapusla minibicornis than spawned outplanted fish. The equal likelihood of other pathogens for held and outplanted spawned fish suggests interactive effects determine survival and that holding at 13 °C prevented expression of lethal pathogenesis. Progeny of held fish from all locations and collection dates were viable. Overall, holding could be a viable method to reduce PSM, but issues of transport stress, proliferative disease such as those caused by bacteria, and antibiotics remain.
Book Synopsis A Model of the Spring-run Chinook Salmon Population of the North Umpqua River by : William Frederick Forrest
Download or read book A Model of the Spring-run Chinook Salmon Population of the North Umpqua River written by William Frederick Forrest and published by . This book was released on 1998 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fall Chinook (Oncorhynchus Tshawytscha) by : Jim Waldvogel
Download or read book Fall Chinook (Oncorhynchus Tshawytscha) written by Jim Waldvogel and published by . This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Age analysis for 22 years (1980 excluded) showed that the overall percentages for female spawners was 53% (4-year olds), 38% (3-year olds), and 9% (5-year olds). The age composition of male spawners showed a high degree of variability throughout the study. Male chinook of age 2, 3 and 4 were dominant annually, but 5- and 6- year old fish were present in most spawning seasons. All chinook carcasses from which scales were collected were also measured for length (over 120 samples in 22 years). Decreases in mean length were documented for all age classes for each of the El Nino episodes that occurred during the study (1982-1984; 1992-1993; 1997-1998). The decreases in mean length appeared to carry forward for each cohort's age class. The total number of chinook redds was tabulated by counting "fresh" redds during weekly spawning surveys. The mean number of redds was 117 for the 23-year period with a mean of 0.9 redds per adult salmon or 1.8 redds per female.
Book Synopsis Evaluation of Spring Chinook Salmon in Relation to the Operation of Lost Creek Dam by :
Download or read book Evaluation of Spring Chinook Salmon in Relation to the Operation of Lost Creek Dam written by and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
