| Objective | Task | Duration in FYs | Estimated 2001 cost | Subcontractor |
|---|
| 1. Estimate abundance, measure biological characteristics, and determine migration timing of mature Pacific lampreys. |
a. Trap adult anadromous lampreys though the entire migration period and measure their biological characteristics (length, weight, sex, and maturity). |
2001, 2002, 2003 |
$37,571 |
|
|
b. Mark captured Pacific lampreys, release them downstream of the trap location, and estimate spawning run abundance from proportion of marked animals recaptured. |
2001, 2002, 2003 |
$9,393 |
|
| 2. Determine larval Pacific and larval and adult western brook lamprey distribution, densities, habitat use, and biological characteristics. |
a. Capture larval lampreys and adult western resident (western brook) lamprey and determine their densities by depletion electrofishing and measure their length, weight, and sex. |
2001, 2002, 2003 |
$25,491 |
|
|
b. Evaluate habitat characteristics at ammocoete capture sites. |
2001, 2002, 2003 |
$25,490 |
|
| 3. Determine outmigration timing and estimate abundance of recently metamorphosed lampreys in Cedar Creek and a tributary. |
a. Capture outmigrant lampreys by floating screw trap in Cedar Creek, mark and release these animals upstream of the trap site, and estimate abundance from the proportion of marked lampreys in subsequent samples. |
2001, 2002, 2003 |
$53,943 |
|
|
Capture outmigrant lampreys by floating screw or fyke trap in a major tributary to Cedar Creek, mark and release these animals upstream of the trap site, and estimate abundance from the proportion of marked lampreys in subsequent samples. |
2001, 2002, 2003 |
$25,881 |
|
| 4. Evaluate lamprey homing fidelity, survival rates, and ocean residence. |
a. Tag outmigrant lamprey with coded wire tags (CWT) and monitor immigrant adults for CWT; for recaptures, determine ocean residence time from time elapsed between tagging and recapture, and homing fidelity and survival rates from recapture percentages. |
2001, 2002, 2003 |
$10,000 |
|
| 5. Verify diagnostic characteristics and species of larval lampreys; evaluate efficacy of aging lampreys using statoliths |
a. Rear ammocoetes through metamorphosis to verify species identifications; extract statoliths from ammocoetes and determine if statolith banding patterns correspond to length-frequencies and known ages. |
2001, 2002, 2003 |
$6,612 |
|
|
b. Use genetic markers to verify species identifications. |
2001, 2002, 2003 |
$0 |
|
| 6. Evaluate spawning habitat requirements of adult lampreys. |
a. Conduct weekly surveys during potential spawning periods to identify lamprey spawning locations and redds, sample redds to evaluate the occurrence of unused redds. |
2001, 2002, 2003 |
$8,250 |
|
|
b. Measure physical characteristics of redds, including redd size, depth in the water column, water velocity, substrate, habitat type, and presence of cover and shading. |
2001, 2002, 2003 |
$4,125 |
|
|
c. Cap redds to determine developmental timing and survival of lamprey eggs and larvae. |
2001, 2002, 2003 |
$4,125 |
|
| 7. Evaluate how stream temperature influences larval and adult Pacific and western brook lamprey habitat use. |
a. Longitudinally map Cedar Creek and its tributaries using Infrared Videography as (Snowy Butte Helicopter subcontract) |
2001, 2002, 2003 |
$19,000 |
Yes |
| 8. Determine immigration patterns and timing, habitat use between immigration and spawning, and spawning behavior and habitat use of adult Pacific lamprey |
a. Radio-tag up to 20 adult Pacific lamprey captured during adult trapping each year, monitor their movements by radio-telemetry and measure the physical characteristics of habitats used for overwintering and spawning. |
2001, 2002, 2003 |
$89,000 |
|
This increased budget reflects an increase in indirect costs from 19% to 34.2% , slightly increased personnel costs, and the addition of three new study components (Obj. 3, task b; Obj. 7, task a; and Obj. 8, task a; all are described in the following section). If FY 2001 work-tasks remain unchanged from FY 2000, the budget would be $185,000 (a 16% increase from projections). Combined, the budget increase for the three new study components is $133,881.
The three added components address components of Pacific lamprey behavior, population dynamics, and biology that are unknown for the population in question and Pacific lamprey in general, but which are crucial information for management and recovery of this species. Obj. 3b: provides outmigrant abundance estimates and timing from the Cedar Creek tributary with highest ammocoete densities (to be determined). Obj. 7a: uses IR videography to provide longitudinal temperature and riparian vegetation profiles, for examining relationships between larval and adult lamprey habitat use, habitat characteristics, and stream temperatures. Stream temperature has been shown to be a critical variable in determining fish distribution and survival, both for lampreys and other species. Obj. 8a: provides adult immigration rates, movement patterns, and habitat associations during immigration, overwintering and spawning. This information is largely unknown for this species.
This information was not provided on the original proposals, but was generated during the review process.
The three added components address components of Pacific lamprey behavior, population dynamics, and biology that are unknown for the population in question and Pacific lamprey in general, but which are crucial information for management and recovery of this species. Objective 3b provides outmigrant abundance estimates and timing from the Cedar Creek tributary with highest ammocoete densities (to be determined). Objective 7a uses IR videography to provide longitudinal temperature and riparian vegetation profiles, for examining relationships between larval and adult lamprey habitat use, habitat characteristics, and stream temperatures. Stream temperature has been shown to be a critical variable in determining fish distribution and survival, both for lampreys and other species. Objective 8a provides adult immigration rates, movement patterns, and habitat associations during immigration, overwintering and spawning. This information is largely unknown for this species.