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

B. Task: Replicate technique using microsatellite primers used by Dr. Tom
Dowling in RBS evaluation, and develop a suite of additional microsatellite
primers.
Target date: July 2004
C. Task: Replicate technique used in mtDNA RFLP analysis used by Dr. Tom
Dowling in screening RBS.
Target date: October 2004
D. Task: Produce baseline genotype of all RBS broodstock at Dexter and other
facilities.
Target date: July 2005
E. Task: Provide statistical analysis of results to determine the extent of
differentiation of hatchery stocks.
Target date: December 2005
Alternative: If broodstocks appear to be distinct, such as Lake Mohave and the
Green River stocks, separate stock identities will be designated in collaboration
with the holding facilities, and mating strategies developed to ensure genetic
integrity is maintained.
Alternative: If stocks are not significantly different, movement of gametes and fry
between hatcheries will be part of ongoing broodstock management strategy to
maximize diversity of captive populations.
2) Establish a genetic broodstock plan that actively monitors and maintains genetic variability and
long-term fidelity of each broodstock at Dexter NFHTC.
Management Action: prevent loss of genetic diversity as measured by microsatellite loci,
and mtDNA.
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