6013

• UCREFRP Catalog Number: 6013
• Author: U.S. Fish and Wildlife Service, C. R. F. R. T.
• Title: Humpback Chup Recovery Plan.
• USFW Year: 1979.
• USFW - Doc Type: \
• Copyright Material: NO

41. Determine the taxonomy of several humpback chub. bonytail chub,
roundtail chub life stages.
Larval, juveaila, sad adult specimen series will ba preserved for
taxonomic evaluatioce. Morphological and meristic characters will
be noted and analyzed using appropriate statistical analyses.
Four populations of humpback chubs will be compared. .
42. Determine the taxon of the fcllowi h brid crosses at several
life stages• humpback x roundtail, humpback x bonytail, bomitafl
x roundtail, and intraspecific humpback chub crosses.
A11 of these hybrid crosses are thought to~occur naturally to a
limited extent. The occurrence of possible hybrid specimens in a
collection of suspected humpback chubs confuses the acceptable
limits of variability for G. cypha. Larval, juvenile, and adult
specimens of each of-the above hybrid crosses should be preserved
for taxonomic evaluation as they are produced and reared in the
hatchery. Morphological and meristic'characters will be noted
and analyzed using appropriate statistical analyses.
43. Conduct other studies using wild or captive Gila fishes.
Behavioral, physiological. and biochemical studies of captive fishes
of the genus Gila may yield insights into their taxonomic relation-
ships. This research should be conducted at a propagation facility
or is the field using a population of genetically.pure humpback
chubs. The biochemical research must be carried out on knows pure
samples at a recognized facility by a campeteat investigator.
S. Conduct informatian and education programs to Rain sup ort for recovery
program.
The humpback chub is as obscure species which could benefit greatly if
afforded even moderate publicity. The swift, canyon-bound waters in which
certain humpback chub populations occur also have popular recreatioaai
uses, such as rivet tanning. Thus, there is already some public interest
~ia the habitat of the species. Increased public awareness and support
will aid the total recovery effort by generating additional funding.
5I. Develop and roduce needed information and education (I ~ 8) materials.
Producing and distributing brochures, films, posters, sad a newsletter
should be coordinated by II. S. Fish and Wildlife Service and perhaps
delegated to private marketing firms. Public agencies can supply
expertise through consultation, but a grivate contractor would be
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