17450: Rev 1: WE F: Work Element Summary

Work Element Summary PDF

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Basics

Contract Number:

17450

Contract Title:

2002-031-00 PI SPRING CHINOOK GROWTH RATE MODULATION

Contract Start Date:

6/1/2004

Contract End Date:

5/31/2006

WE ID:

157. Collect/Generate/Validate Field and Lab Data

Work Element Usage Report

Title:

F: 157 - Production scale growth modultation studies

Description:

F. In cooperation with biologists from the Yakama Nation and the WDFW over the past two years we have implemented a production scale experiment aimed at reducing precocious maturation in Yakima spring Chinook. We designed a rearing regime using the best available information from our first growth modulation experiment. As described above half of the fish are being grown at the normal production size of 15 grams and half at 10 grams by Oct. 15 for tagging. These treatment groups are differentially tagged in order to monitor juvenile survival during spring smolt migration at various Yakima and Columbia River dams and smolt-to-adult survival. The concern is that by reducing the size of the fish during juvenile development precocious maturation will be reduced, but there may be a predation survival disadvantage caused by small size. Numerous studies have suggested that large smolt size is advantageous for survival. We are monitoring the growth rate of the production fish by assisting with monthly size determinations and sampling groups periodically and just prior to release for indications of precocious maturation at the acclimation sites. In 2004 the precocious male maturation rate of the low growth treatment was 29% of males while that of the high growth treatment was 43% of males representing a 33% reduction in maturation. The Yakima program is planning to repeat this experiment for five brood years in order to test for effects of size on precocious male maturation as well as juvenile and adult survival.
Expectations: The expectations from this objective are that smaller fish will have reduced levels of precocious male maturation compared with the conventionally reared fish in the second year. Previous studies by our research team have demonstrated that while size is an important variable in smolt survival, perhaps more important is spring growth rate (Beckman et al. 1998; 1999). This study will further contribute to our understanding of the interactions between smolt size, growth rate and survival.

WE Agreement Type:

Contracted

Deliverable Specification:

Provide estimate of precocouis male maturation in Yakima hatchery fish under high and low growth treatments. Compile data over several years and produce peer review publication of results.

WSE Effective Budget:

$16,000

% of Total WSE Effective Budget:

8.63%

WSE Start:

03/07/2006

WSE End:

05/31/2006

WSE Completion:

WSE Progress:

Other

WSE ID Continued From:

n/a

WSE ID Continued To:

n/a

Finite or Recurring:

Recurring

Budget History

SOWRevision	Planned	Updated	Contractor Comments (optional)	BPA Comments (optional)
Work Element Budget (Current Performance Period)	$16,000	$16,000

Milestones

4 Milestones

Sort	Type	Title	Start	End	Status	Modified By	Modified Date
A		Collect samples from hatchery fish during pre-release pathology screening	3/7/2006	3/9/2006	Concluded
		Description: Sample 360 hatchery spring Chinook from each of Easton, Jack Creek, and Clark Flat remote acclimation sites for size, gender and plasma 11-Ketotestoterone and plasma
B		Analyze plasma samples of males	3/10/2006	5/15/2006	Concluded
		Description: Analyze plasma for 11-ketotestosterone (index of precocious maturation in non-migrating fish)
C		Data analysis and interpretation	4/15/2006	5/31/2006	Concluded
		Description: Graph and analyze and interpret data
D	DELIV	Deliverable complete			Active	Donald Larsen	1/27/2006 10:33:18 AM
		Description: Provide estimate of precocouis male maturation in Yakima hatchery fish under high and low growth treatments. Compile data over several years and produce peer review publication of results.

Metrics

Implementation Metrics

Metric	Planned	Actual	Contractor Comments	Measures	HLIs
1464. Primary R, M, and E Focal Strategy [Population Status, Hydrosystem, Tributary Habitat, Estuary/Ocean, Harvest, Hatchery, Predation, Multiple Strategies]		Hatchery

Location

Work Site ID	Latitude	Longitude	State	County	Province	Subbasin
44049	47.236892	-121.168822	Washington	Kittitas	Columbia Plateau	Yakima
44050	47.320893	-120.855693	Washington	Kittitas	Columbia Plateau	Yakima
44051	47.103765	-120.723327	Washington	Kittitas	Columbia Plateau	Yakima
44056	47.191808	-120.944171	Washington	Kittitas	Columbia Plateau	Yakima

Focal Species

Primary Focal Species:

None

Secondary Focal Species:

None

Environmental Compliance

None

RM&E Metadata

Data Repositories:

Study Plan:

Study Plan Name	Study Plan Owner	Protocol State	Sample Design Name
BPA Fish and Wildlife Program Monitoring v1.0	Russell Scranton	Draft	Production scale growth modultation studies - National Oceanic and Atmospheric Administration v1.0

Methods:
N/A

Metrics:
N/A

Please correct the errors noted below.

Implementation Metrics