Download or read book Lahontan National Fish Hatchery Gardnerville Nevada written by and published by . This book was released on 1993 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lahontan National Fish Hatchery written by and published by . This book was released on 1974 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lahontan National Fish Hatchery Master Plan written by United States. Bureau of Sport Fisheries and Wildlife and published by . This book was released on 1970* with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Final Environmental Statement written by United States. Bureau of Sport Fisheries and Wildlife and published by . This book was released on 1972 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Environmental Manipulations for Captive Lahontan Cutthroat Trout Increase Hatchery Egg Survival and Survival of Yearlings Stocked in Saline Alkaline Walker Lake Nevada written by John P. Bigelow and published by . This book was released on 2010 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: I investigated the reproductive temperature requirements of captive Lahontan cutthroat trout (Oncorhynchus clarkii henshawi ) brood females, and various acclimation protocols for yearling, hatchery-reared Lahontan cutthroat trout stocked in saline, alkaline Walker Lake, Nevada Survival of eggs to the eyed developmental stage, hatching, and yolk-sac resorption was higher when spawned from brood females held in chilled water (7.2°C) from mid December through spawning compared to eggs spawned from females on ambient well water (12.4°C) regardless of whether females were spawned 0, 4, or 7 d post ovulation. Female holding temperature did not appear to affect the timing of ovulation; however, fecundity was higher for females held at 7.2°C versus 12.4°C. The hazard of mortality during a week-long challenge in water from Walker Lake, Nevada for eight-month-old Lahontan cutthroat trout reared at Lahontan National Fish Hatchery was lower for fish acclimated 3 and 8 d by gradually increasing the ratio of lake water to hatchery water compared to un-acclimated fish. Increased fork length also reduced the hazard of death. No fish survived the entire week-long challenge, indicating improvements in the acclimation method are necessary. In a second acclimation study, the hazard of mortality for yearling, hatchery-reared Lahontan cutthroat trout during three replicate week-long challenges in saline, alkaline water from Walker Lake was lower for fish acclimated for 17 d at the hatchery in simulated lake water than for un-acclimated fish; however, acclimation for 8 d seemed to have no effect. Fish condition factor and fork length were directly correlated to challenge survival. Blood plasma osmolality was elevated in fish not surviving the challenge; however, challenge survivors that had been acclimated for 17 d exhibited normal plasma osmolality. These results will facilitate the recovery of Lahontan cutthroat trout in the Truckee-Tahoe and Walker subbasins.

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Download or read book National Survey of Needs for Hatchery Fish written by United States. Division of Fishery Services and published by . This book was released on 1969 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Department of the Interior and Related Agencies Appropriations for Fiscal Year 1967 written by United States. Congress. Senate. Committee on Appropriations and published by . This book was released on 1966 with total page 2308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Department of the Interior and Related Agencies Appropriations for Fiscal Year 1974 Hearings Before 93 1 on H R 8917 written by United States. Congress. Senate. Appropriations Committee and published by . This book was released on 1973 with total page 1476 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Department of the Interior and Related Agencies Appropriations for Fiscal Year 1974 written by United States. Congress. Senate. Committee on Appropriations and published by . This book was released on 1973 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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