8063

• UCREFRP Catalog Number: 8063
• Author: Colorado River Fish and Wildlife Council.
• Title: Minutes, Colorado River Fish and Wildlife Council - April 22-23, 1998.
• USFW Year: 1998.
• USFW - Doc Type: Las Vegas, Nevada.
• Copyright Material: NO

Notes - species status and need evaluation tables
Information format key:
H = hard copy, agency reports and literature, field guides
E = electronic/database
R = raw data, files and field notes/data, or other sources
L = peer review literature and scientific journals
M = museum records
A = anecdotal
Notes referenced by state in tables:
Arizona
DRAFT 04.22.98 1
Mostly academic research on calling and breeding behavior; AGFD study on use of urban flood
control impoundments; general and specific herpteofaunal inventories; studies of breeding and
larval ecology.
2. Demographic information; studies on nature and effects of interspecific interactions with B.
woodhouseii.
3. Academic behavioral research on calling and breeding behavior; AGFD study on use of urban
flood control impoundments by B. woodhouseii, B. cognatus, and other sp.
4. Behavioral studies on calling and mating behavior; taxonomic assessments based on calling;
AGFD urban amphibian study; limited radio telemetry study of behavior and ecology.
5. Demographics, ecology of adults away from breeding sites.
6. Mostly inventory and monitoring; genetics and taxonomic studies ongoing; evaluation of
conservation measures.
Limited to single population in Littlefield area, Virgin River basin. Taxonomic questions need to
be resolved. Assuming Littlefield population is Rana onca, species is critically endangered in
Arizona.
8. Species declined dramatically at some point, probably <1960s. Littlefield may be only extant
population in Arizona.
9. Control of predators and competitors; maintenance and enhancement of breeding habitat and
dispersal corridors; establishment of additional breeding populations.
California
Colorado
Colorado Herptile database. 12000+- occurance records in dBase format; Herpetological
Microbiogeography of Colorado: Amphibians and Reptiles of Colorado: Colorado Vertebrate
Ranking System, includes pop. size, distribution and trend; Wildlife Resource Information
System. GIS data; Colorado Natural Heritage Database for'at risk' species.
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