Year | Accomplishment |
1995 |
Reviewed the status of captive broodstock technology with respect to physiology, microbiology, morphology, genetics, and husbandry and produced a comprehensive written document. |
1995 |
Determined differences in reproductive behavior and success of captively reared and wild adult salmon |
1996 |
Developed method to bioencapsulate therapeutic levels of three antibiotic compounds into live adult Artemia. |
1996 |
Demonstrated that hormone implants effectively advanced and synchronized spawning without impairing gamete quality in sockeye salmon |
1996 |
Demonstrated that increased body fat levels were correlated with the onset of early (age-2) male maturity in spring chinook salmon |
1996 |
Developed new DNA microsatellite techniques for determining individual reproductive success of spawning salmon |
1997 |
Demonstrated that growth/body size more important than fat level in affecting early male maturity, and that high growth rate impairs cellular mediated immunity in chinook salmon |
1997 |
Quantified individual breeding success of captively reared adults to determine correlations between morphometric variation and breeding success |
1997 |
Demonstrated that combinations of dietary carotenoid pigments are more effective than single carotenoid supplements in developing appropriate nuptial coloration patterns |
1997 |
Determined the optimum dietary fatty level and feeding level for sockeye salmon reared from fry to spawning, and demonstrated that there was no effect of dietary fat level on precocious maturation, unlike reports in spring chinook salmon |
1997 |
Demonstrated higher and more consistent tissue levels of erythromycin in first feeding salmonids fed live bioencapsulated Artemia diets than conventional medicated pellets. |
1998 |
Developed a freeze-dried bioencapsulated Artemia diet that maintains high palatability with first-feeding salmon. Freeze-dried bioencapsulated Artemia can be produced off-site, shipped and stored until needed |
1998 |
Determined the effects of male size on female breeding behavior |
1998 |
Provided evidence that early survival in chinook salmon can be sensitive to modest levels of inbreeding (12-25% greater than a control) incurred in a single generation |
1998 |
Shown that chinook salmon body size and shape are highly heritable and have similar genetic and phenotypic architectures, suggesting that selection could act quickly to affect variation in these characters |
1998 |
Demonstrated that resistance to infection by Vibrio in chinook salmon is heritable but that time to death is not. These results indicate the importance in captive broodstock programs of considering the genetic bases of traits that affect fitness |
1998 |
Quantified individual reproductive success of captively reared adults to determine correlations between morphometric variation and breeding success. Demonstrated that kype length is correlated with behavioral measures of male breeding success. |
1998 |
Demonstrated that diets supplemented with krill and vitamins reduced embryonic deformities in sockeye salmon. |
1998 |
Demonstrated that rearing temperature decreased age-at-maturity in sockeye salmon |
1998 |
Developed a panel of assays to assess immune functions of salmonid broodstock reared in captivity |
1998 |
Completed the first quantitative profile of immune functions of sockeye salmon reared at different temperatures, and identified a rearing temperature effect on antibody responses. |
1998 |
Demonstrated that azithromycin decreased mortality caused by Bacterial Kidney Disease, when compared to conventional (erythromycin) treatments. |
1999 |
Quantified the effects of one consequence of early male maturation (i.e., male size) on female breeding behavior and success . Demonstrated that females respond less favorably to smaller males by delaying spawning. |
1999 |
Directly evaluated the breeding success of captively reared adults released to spawn in their natal streams in Idaho. This research has lead to developing more effective monitoring plans and protocols, and guided reintroduction strategies |
1999 |
Described the detailed reproductive behavior patterns of chinook salmon. This information (previously absent from the published literature) guided monitoring and evaluation efforts for programs released ESA-listed, captively reared adult chinook salmon. |
1999 |
Described the detailed reproductive behavior patterns of chinook salmon and developed protocols for use in monitoring breeding behavior of ESA-listed chinook salmon |
1999 |
Directly evaluated the breeding success of captively reared adults released to spawn in their natal streams in Idaho |
2000 |
Recorded survival and growth data from brood year 1997 and 1998 inbred progeny of captively reared chinook salmon |
Objective | Task | Duration in FYs | Estimated 2001 cost | Subcontractor |
1. Reduce mortality from Bacterial Kidney Disease (BKD) in chinook salmon |
a. Evaluation of toxic effects of long-term prophylactic use of azithromycin and erythromycin in fall chinook salmon |
2 |
$55,400 |
|
1. |
b. Determine azithromycin depuration or inactivation rates in effluent from salmon during feed-based antibiotic treatment. |
2 |
$60,100 |
|
1. |
c. Determine efficacy of vaccines |
3 |
$97,750 |
|
2. Improve adult salmon natural reproductive performance |
a. Evaluate the effects of rearing environments and acclimation on reproductive behavior and success |
4 |
$198,840 |
|
2. |
b. Evaluate the effects of hydraulic embryo sampling on viability |
2 |
$92,600 |
|
3. Improve reintroduction success |
a. Assess relative success of different re-introduction (release) strategies |
4 |
$106,200 |
|
4. Improve physiological development including maturation synchrony and reproductive characteristics |
a. Evaluate the effects of growth rate on incidence of early male maturity and adult quality in spring chinook salmon |
4 |
$195,650 |
|
4. |
b. Evaluate the effects of growth on maturation timing, fecundity, egg size, and egg quality. |
4 |
$195,200 |
|
5. Reduce genetic impacts of captive breeding programs |
a. Determine effects of close inbreeding on captive and released chinook salmon |
3 |
$68,460 |
|
5. |
b. Characterize genetic basis of life history in chinook salmon |
3 |
$67,500 |
Yes |
6. Enhance juvenile body characteristics of salmon |
a. Assess the quality of fish released from ongoing captive broodstock program |
3 |
$48,000 |
Yes |
6. |
b. Evaluate the effects of dietary protein and energy intakes on post-release fitness. |
3 |
$52,000 |
Yes |
7. Improve olfactory imprinting in sockeye salmon |
a. Determine environmental effects on imprinting at different developmental stages |
5 |
$162,500 |
Yes |
In February 1999, project coordinators consulted with the Stanley Basin Sockeye and Snake River Chinook Technical Oversight Committees, including the project's BPA COTR, to assist in prioritizing research objectives. As a result Objective 5, Improve Olfactory Imprinting in Sockeye Salmon, was identified as critical to the success of the sockeye salmon captive broodstock program and was added to this research project. Other lower priority objectives were phased-out to accommodate this research. The remaining Objectives may appear different from the fy2000 proposal. This is because the project outline has been re-organized to better communicate the Objectives, Tasks, and products of the project in response to the fy2000 ISRP project review .
This information was not provided on the original proposals, but was generated during the review process.
In February 1999, project coordinators consulted with the Stanley Basin Sockeye and Snake River Chinook Technical Oversight Committees, including the project's BPA COTR, to assist in prioritizing research objectives. As a result Objective 7, Improve Olfactory Imprinting in Sockeye Salmon, was identified as critical to the success of the sockeye salmon captive broodstock program and was added to this research project. Other lower priority objectives were phased-out to accommodate this research. The remaining objectives may appear different from the FY 2000 proposal. This is because the project outline has been reorganized to better communicate the objectives, tasks, and products of the project in response to the FY 2000 ISRP project review. The MainSys SRT supports the reorganization of tasks and objectives.