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If you have any questions on the information presented, or require additional report data or attachments, please contact the Report Contact
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To maximize potential for successful establishment of a viable anadromous Sockeye population
under existing conditions, progeny from the residential Coquitlam Reservoir Kokanee were used
as broodstock for a hatchery intervention. Genetic stock identification of the resident
Coquitlam Kokanee concluded the Kokanee to be recent descendants of the anadromous
Sockeye population and therefore to be well suited as a locally adapted broodstock.
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Old Reference Number: COA-F17-F-1372
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Old Reference System: FWCP Fish Wildlife Compensation Program - Coastal
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Date Published: Sep 2017
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Report ID: 53123
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Audience: Government and Public
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In the Coquitlam-Buntzen BC Hydro system, numerous interested parties have a vision of
restoring salmon runs that have been obstructed from migrating into the reservoir since 1914.
In 2007, the first adult Sockeye Salmon returned to the Coquitlam Reservoir dam following the
release of 620 Kokanee/Sockeye smolts in 2005. These fish were transported over the dam and
released into the reservoir in a historic ceremony led by the Kwikwetlem First Nation. While the
project has been successful in seeing these initial returns of adult Sockeye Salmon to the
Coquitlam River, few Sockeye/Kokanee smolts have emigrated from the reservoir in each
successive year. The reasons for the continued low numbers in adult returning from the ocean
to Coquitlam Reservoir are likely based on low numbers of juvenile smolts leaving the reservoir
to the ocean.
To maximize potential for successful establishment of a viable anadromous Sockeye population
under existing conditions, progeny from the residential Coquitlam Reservoir Kokanee were used
as broodstock for a hatchery intervention. Genetic stock identification of the resident
Coquitlam Kokanee concluded the Kokanee to be recent descendants of the anadromous
Sockeye population and therefore to be well suited as a locally adapted broodstock.
An egg take project was conducted in Coquitlam Reservoir in the fall of 2015 (Year 1) that
resulted in the capture and fertilization of ~10,000 Kokanee eggs, which were transported for
incubation and rearing to the smolt stage at the Department of Fisheries and Oceans Canada
(DFO)-assigned Rosewall Creek hatchery on Vancouver Island. Disease screening of female
Kokanee was performed at the Pathology Lab of the Freshwater Fisheries Society of BC located
in Duncan, Vancouver Island.
Following the one and a half year period from egg take in the fall of 2015, Kokanee were held
through the initial incubation and later rearing to the fry stage to reach the smolt stage in the
April of 2017. At that time, approximately 5,400 smolts were transported from Rosewall Creek
Hatchery to the Coquitlam Dam to be released into the Coquitlam River below the dam.
The Kokanee smolts were transported by Rosewall Creek Hatchery staff to Coquitlam Dam on
April 12, 2017 and transferred into a 3 m diameter holding tank that was installed by the Port
Coquitlam & District Fishing & Hunting Club. Volunteer members of the club also fed the smolts
and cleaned the tank on a daily basis throughout the rearing period, from April 12 to April 20
for the majority of the smolts and to May 1 for the remaining 400 smolts.
On April 20, 2017, 5,000 Kokanee smolts were released into the Coquitlam River in a widely
publicized ceremony and with First Nations, municipal, and provincial representatives in
attendance.
On April 14 and April 24, 2017, a total of 103 Kokanee smolts were surgically implanted with
acoustic tags for an acoustic telemetry study in Coquitlam Reservoir. In this study, the approach
behaviour of smolts to the dam and its Low Level Outlets (LLOs) was investigated to inform the planning of a smolt release and surface attraction structure. Detailed results of this study will
be reported in an additional report submitted to the Fish and Wildlife Compensation Program
(FWCP) in the spring of 2018 and once all study results are analyzed.
As an essential part of the acoustic telemetry study, Kokanee smolts were also used to assess
passage survival through the LLOs of Coquitlam Dam in combination with Coho smolt releases.
In summary, this study was highly successful in raising and releasing Kokanee smolts to return
as adult Sockeye and providing smolts for behaviour and survival studies that are essential to
the re-establishment of a Coquitlam Sockeye population.
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Report Type
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Fish and Aquatic Habitat Information |
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Subject
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Fish Species - Kokanee - Oncorhynchus nerka |
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Fish Species - Sockeye Salmon - Oncorhynchus nerka |
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Region - Lower Mainland |
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Fish and Fish Habitat - Fish Genetics |
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Fish and Fish Habitat - Research |
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