9720

• UCREFRP Catalog Number: 9720
• Author: U.S. Fish and Wildlife Service.
• Title: Razorback sucker ‎(Xyrauchen texanus)‎ genetics management and captive propagation plan, Dexter National Fish Hatchery and Technology Center.
• USFW Year: 2004.
• USFW - Doc Type: Dexter National Fish Hatchery and Technology Center
• Copyright Material: NO

will continue to work closely with both Service and non-Service cooperators charged with this
task.
Priority 2) Establish and protect additional wild populations.
2.6 Augment or reintroduce RBS in recovery areas.
2.6 Augment or reintroduce RBS in recovery areas. This element calls for the refinement
of propagation techniques to improve culture methods, address life history requirements, maintain
genetic diversity of captive stocks and increase fish survival. Captive management objectives to
facilitate meeting the above priorities are listed below.
Broodstock Management Objectives
1) Develop a RBS broodstock program that conserves the genetic diversity of Lake Mohave
RBS, and a captive propagation program to produce offspring reflective of that diversity for
recovery efforts.
2) Establish a genetic broodstock management plan that actively monitors and maintains genetic
variability and long-term fidelity of each broodstock.
3) Establish a marking system for all broodstocks to allow an unambiguous identification of each
broodfish.
4) Establish an active genetic monitoring plan that identifies and minimizes sources of
domestication in production fish for the hatchery environment.
5) Establish culture procedures that minimize risks associated with intensive fish production.
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