Comparing the Reproductive Success of Yakima River Hatchery- and Wild-Origin Spring Chinook; Yakima/Klickitat Fisheries Project Monitoring and Evaluation, 2005-2006 Annual Report.
- Washington Department of Fish and Wildlife, Olympia, WA
- Oncorh Consulting, Olympia, WA
Reproductive success in wild- and first generation hatchery-origin spring Chinook males was examined by allowing the fish to compete for spawning opportunities in two sections of an observation stream. Behavioral observations were used to characterize the frequency of aggression and courting activities. Microsatellite DNA from each male and fry collected from the observation stream were used in pedigree analyses to estimate reproductive success. The coefficient of variation in male reproductive success equaled 116 and 86% in the two populations. No differences were detected in reproductive success due to hatchery or wild origin. Nor were any behavioral differences found between hatchery and wild males. Although statistical power was low due to intrinsic variation a great deal of overlap existed in the reproductive success values of hatchery and wild males. Significant disparities existed among the males on their ability to produce offspring. Males achieving high reproductive success mated with numerous females, were socially dominant, aggressive, and tended to stay in localized areas, courting and spawning with females that were adjacent to one another.
- Research Organization:
- Washington Department of Fish and Wildlife; Oncorh Consulting
- Sponsoring Organization:
- United States. Bonneville Power Administration.
- OSTI ID:
- 903225
- Report Number(s):
- DOE/BP-00022370-3
- Country of Publication:
- United States
- Language:
- English
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Comparing the Reproductive Success of Yakima River Hatchery- and Wild-Origin Spring Chinook; Yakima/Klickitat Fisheries Project Monitoring and Evaluation, 2004-2005 Annual Report.
Technical Report
·
Sat May 01 00:00:00 EDT 2004
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OSTI ID:850185
Comparing the Reproductive Success of Yakima River Hatchery- and Wild-Origin Spring Chinook; Yakima/Klickitat Fisheries Project Monitoring and Evaluation, 2001-2002 Annual Report.
Technical Report
·
Thu May 01 00:00:00 EDT 2003
·
OSTI ID:823015
Comparing the Reproductive Success of Yakima River Hatchery- and Wild-Origin Spring Chinook; Yakima/Klickitat Fisheries Project Monitoring and Evaluation, 2004-2005 Annual Report.
Technical Report
·
Sun May 01 00:00:00 EDT 2005
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OSTI ID:887233