Author:
Publisher:
ISBN:
Category : Aquaculture stations
Languages : en
Pages : 6
Book Description
Lahontan National Fish Hatchery, Gardnerville, Nevada
Author:
Publisher:
ISBN:
Category : Aquaculture stations
Languages : en
Pages : 6
Book Description
Publisher:
ISBN:
Category : Aquaculture stations
Languages : en
Pages : 6
Book Description
Lahontan National Fish Hatchery
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 114
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 114
Book Description
Lahontan National Fish Hatchery Master Plan
Author: United States. Bureau of Sport Fisheries and Wildlife
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 69
Book Description
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 69
Book Description
Final Environmental Statement
Author: United States. Bureau of Sport Fisheries and Wildlife
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 100
Book Description
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 100
Book Description
Draft Environmental Statement, Lahontan National Fish Hatchery, Nevada
Author:
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 100
Book Description
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 100
Book Description
Environmental Manipulations for Captive Lahontan Cutthroat Trout Increase Hatchery Egg Survival and Survival of Yearlings Stocked in Saline, Alkaline Walker Lake, Nevada
Author: John P. Bigelow
Publisher:
ISBN:
Category : Thesis
Languages : en
Pages : 158
Book Description
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.
Publisher:
ISBN:
Category : Thesis
Languages : en
Pages : 158
Book Description
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.
Garrison Dam National Fish Hatchery
Author:
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category : Fish hatcheries
Languages : en
Pages : 8
Book Description
Saratoga National Fish Hatchery
Author: Saratoga National Fish Hatchery
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 8
Book Description
Federal Register
Author:
Publisher:
ISBN:
Category : Administrative law
Languages : en
Pages : 1306
Book Description
Publisher:
ISBN:
Category : Administrative law
Languages : en
Pages : 1306
Book Description
National Survey of Needs for Hatchery Fish
Author: United States. Division of Fishery Services
Publisher:
ISBN:
Category : Fish-culture
Languages : en
Pages : 214
Book Description
Publisher:
ISBN:
Category : Fish-culture
Languages : en
Pages : 214
Book Description