WSP00173

• File Number: 8240.200.10.A
• Description: UCRBRIP Habitat Restoration
• Basin: Colorado Mainstem
• Date: 10/8/1997
• Author: UCRBRIP
• Title: Final Habitat Restoration Program FY 1998 Work Plan Part 2
• Water Supply Pro - Doc Type: Publication

COLORADO RIVER RECOVERY PROGRAM
FY-1998 PROPOSED SCOPE-OF-WORK

proj ect No.: '13

Lead Agency:

Submitted by:
Address:

Phone:
Fax:
Emai1:

Submitted by:
Address:

Phone:
Fax:
Emai1:

Utah Division of Wildlife Resources

Leo Lentsch, Project Manager
Utah Division of Wildlife Resources
1594 West North Temple
,Suite 2110, Box 146301
Salt Lake City, UT 84114-6301
[phone]
[phone]
[e-mail]

C. Anna To1ine, Principal Investigator
Utah State University
Fisheries and Wildlife Department
Logan, UT 84322-5210
[phone]
(8D1) 797-1871
[e-mail]

Date: April 25, 1997

Cateqory:
___ Ongoing project

Expected Fundinq Source:
X Annual funds
(As proposed)
Capital funds
-X- Other (UDWR)

X

Ongoing-revised project
Requested new project
Unsolicited proposal

1.

Title of Proposal:

Potential for hybridization between Gila spp.
following reintroduction of bony tail

II. Relationship to RIPRAP:

General Recovery
IV.

IV.A.5.

IV.A.5.a.
IV.A.5.a. (1)

Program Support:
Manage genetic integrity and augment or restore
populations
Develop and Implement basinwide bony tail restoration
plan
Implement bony tail chub restoration plan
Conduct high-priority lab/field studies identified in
bony tail reintroduction plan

III. Study Background/Rationale and Hypotheses:

RATIONALE/PROBLEM STATEMENT

The reintroduction plan for bony tail in the Upper Colorado River identified
the potential impact of hybridization as a primary concern (Lentsch et a1.
1996). This potential impact, however, remains unresolved. The
reintroduction plan called for evaluating the potential impact of
hybridization by 1) genetic monitoring of existing populations of Gila spp. in
the basin to determine if hybridization was occurring, and 2) quantification
of the viab~lity of laboratory-produced hy~rid crosses relative to
laboratory-produced pure 'crosses. We propose that the UBRIP initiate this

1