Author:
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ISBN:
Category : Fish hatcheries
Languages : en
Pages : 48

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Author:
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 89

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Author:
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 45

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Author:
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 98

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Author: United States. Army. Corps of Engineers. Walla Walla District
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Category :
Languages : en
Pages :

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Author: Charles D. Warren
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 62

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"This report summarizes production, survival, and adult return information for brood year 2008 summer steelhead Oncorhynchus mykiss for the Lower Snake River Compensation Plan (LSRCP) and Idaho Power Company (IPC) hatchery mitigation programs operated within the state of Idaho."--Page 1.

Author:
Publisher:
ISBN:
Category : Fishery resources
Languages : en
Pages : 284

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Author: Charles D. Warren
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 62

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This report summarizes production, survival, and adult return information for brood year 2009 (BY09) summer steelhead Oncorhynchus mykiss for the Lower Snake River Compensation Plan (LSRCP) and Idaho Power Company (IPC) hatchery mitigation programs operated within the state of Idaho. Clearwater, Hagerman National, Magic Valley, and Niagara Springs fish hatcheries received eyed eggs from broodstock collection facilities and reared them for one year prior to release. Eyed egg-to-smolt survival across all hatcheries and stocks was high with an average of 88% (range = 72%-96%). Average smolt size at release ranged from 5.2 fish per pound (fpp) to 3.7 fpp. Combined, these facilities released 5,656,363 smolts at multiple sites in the Clearwater and Salmon river basins as well as the Snake River downstream of Hells Canyon Dam. Representative groups of hatchery steelhead in each rearing facility were tagged with passive integrated transponder (PIT) tags to evaluate migration timing and survival from release to Lower Granite Dam (LGD). Survival estimates from release to LGD averaged 82.6% (range 67.6%- 99.1%). Recovery of coded wire tags (CWT) and analysis of parentage based tagging (PBT) from the fisheries and hatchery traps was used to reconstruct the BY09 return of adult steelhead. The total estimated return to the mouth of the Columbia River from BY09 releases was 109,057 adult steelhead during the 2011-12, 2012-13, and 2013-14 runs including 62,133 from LSRCP funded facilities (Clearwater, Hagerman National, and Magic Valley fish hatcheries) and 46,924 from IPC funded Niagara Springs Fish Hatchery. The estimated return of adults back to the project area upstream of LGD was 91,175 including 53,879 from the three LSRCP facilities and 37,296 from Niagara Springs Fish Hatchery. Exploitation by recreational anglers upstream of LGD accounted for 55,315 of the returns and steelhead recovered at hatchery traps accounted for 18,852 of the returns to LGD. The remaining fish (17,008) were classified as unharvested escapement and composed of fish that were returning to offsite release locations with no trapping facility to remove them. The smolt to adult survival rate (SAS), defined as the percent of smolts released that returned as adults to the Columbia River mouth was 1.9% for all hatcheries and release groups combined. Smolt to adult return rate (SAR), defined as the percent of smolts released that returned as adults to the project area upstream of LGD, was 1.6% for all rearing hatcheries and release groups combined. Progeny to parent ratios (PPR), which is the ratio of the total number of adults produced to the number of males and females spawned to create the progeny in question, ranged from 52.6 for DWOR stock releases from Clearwater Fish Hatchery to 8.9 for the EFNAT stock released into the East Fork Salmon River from brood year 2009 spawners. In addition to estimating adult returns through run reconstruction methodologies, brood year 2009 steelhead releases from all three LSRCP rearing facilities and Niagara Springs Fish Hatchery were PIT tagged at a sufficiently high rate to estimate returns to Bonneville and Lower Granite dams. The return estimate based on the sum of PIT expansion values exceeded the run reconstruction estimates by 10% at Bonneville Dam. The PIT tag return estimate at LGD was 9% less than the run reconstruction estimate.

Author: Daniel M. Herrig
Publisher:
ISBN:
Category : Anadromous fishes
Languages : en
Pages : 47

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Author: Michael L. McLean
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ISBN:
Category :
Languages : en
Pages : 53

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Anadromous salmonid stocks have declined in both the Grande Ronde River Basin (Lower Snake River Compensation Plan (LSRCP) Status Review Symposium 1998) and in the entire Snake River Basin (Nehlsen et al. 1991), many to the point of extinction. The Grande Ronde River Basin historically supported large populations of fall and spring chinook (Oncorhynchus tshawytscha), sockeye (O. nerka), and coho (O. kisutch) salmon and steelhead trout (O. mykiss) (Nehlsen et al. 1991). The decline of chinook salmon and steelhead populations and extirpation of coho and sockeye salmon in the Grande Ronde River Basin was, in part, a result of construction and operation of hydroelectric facilities, over fishing, and loss and degradation of critical spawning and rearing habitat in the Columbia and Snake River basins (Nehlsen et al. 1991). Hatcheries were built in Oregon, Washington and Idaho under the Lower Snake River Compensation Plan (LSRCP) to compensate for losses of anadromous salmonids due to the construction and operation of the lower four Snake River dams. Lookingglass Hatchery (LGH) on Lookingglass Creek, a tributary of the Grande Ronde River, was completed under LSRCP in 1982 and has served as the main incubation and rearing site for chinook salmon programs for Grande Ronde and Imnaha rivers in Oregon. Despite these hatchery programs, natural spring chinook populations continued to decline resulting in the National Marine Fisheries Service (NMFS) listing Snake River spring/summer chinook salmon as ''threatened'' under the federal Endangered Species Act (1973) on 22 April 1992. Continuing poor escapement levels and declining population trends indicated that Grande Ronde River basin spring chinook salmon were in imminent danger of extinction. These continuing trends led fisheries co-managers in the basin to initiate the Grande Ronde Endemic Spring Chinook Salmon Supplementation Program (GRESCSSP) in order to prevent extinction and preserve options for use of endemic fish stocks in future artificial propagation programs. The GRESCSSP was implemented in three Grande Ronde River basin tributaries; the Lostine and upper Grande Ronde rivers and Catherine Creek. The GRESCSSP employs two broodstock strategies utilizing captive and conventional brood sources. The captive brood program began in 1995, with the collection of parr from the three tributary areas. The conventional broodstock component of the program began in 1997 with the collection of natural adults returning to these tributary areas. Although LGH was available as the primary production facility for spring chinook programs in the Grande Ronde Basin, there were never any adult or juvenile satellite facilities developed in the tributary areas that were to be supplemented. An essential part of the GRESCSSP was the construction of adult traps and juvenile acclimation facilities in these tributary areas. Weirs were installed in 1997 for the collection of adult broodstock for the conventional component of the program. Juvenile facilities were built in 2000 for acclimation of the smolts produced by the captive and conventional broodstock programs and as release sites within the natural production areas of their natal streams. The Confederated Tribes of the Umatilla Indian Reservation (CTUIR) operate both the juvenile acclimation and adult trapping facilities located on Catherine Creek and the upper Grande Ronde River under this project. The Nez Perce Tribe (NPT) operate the facilities on the Lostine River under a sister project. Hatcheries were also built in Oregon, Washington and Idaho under the LSRCP to compensate for losses of summer steelhead due to the construction and operation of the lowest four Snake River dams. Despite these harvest-driven hatchery programs, natural summer steelhead populations continued to decline as evidenced by declining counts at Lower Granite Dam since 1995 (Columbia River Data Access in Real Time, DART) and low steelhead redd counts on index streams in the Grande Ronde Basin. Because of low escapement the Snake River summer steelhead were listed as threatened under the Endangered Species Act of 1973 by the National Marine Fisheries Service (NMFS) on 18 August, 1997. Co-managers have also discontinued off-station releases of juvenile Wallowa stock (non-endemic) hatchery summer steelhead into Catherine Creek in 1998 and the upper Grande Ronde River in 1999. Data are lacking on adult return numbers and the genetic make-up of populations that return to tributaries of the Grande Ronde River basin, Catherine Creek and the upper Grande Ronde River specifically. Adult fish weirs are in place on Catherine Creek and the upper Grande Ronde River and data on summer steelhead populations in those areas are collected.