7017

• UCREFRP Catalog Number: 7017
• Author: Starnes, W. C.
• Title: Colorado River Basin
• USFW Year: 1989.
• Copyright Material: NO

Miller, R.R. 1961. Man and the changing fish fauna of the
American southwest. Mich. Pap. Sci., Arts, and Let. 46
(1960) :365-404.
Documents the loss of G. elegans from lower Colorado rivers
near Yuma between 1940 and 1950 and from the Salt River
after 1890, the loss of G. robusta (or intermedia?) from the
main San Pedro between 1904 and 1939, and the disappearence
of both robusta and intermedia from the Salt system near
Tempe after 1926 (robusta since reoccurred).
Minckley, W.L., and J.E. Deacon. 1968. Southwestern fishes and
the enigma of "endangered species". Science 159:1424-1432.
Reiterates essentially same information as previous
reference.
Bestgen, K.R., and. D.L. Propst. 1989. Distribution, status, and
notes on the ecology of Gila robusta (Cyprinidae) in the
Gila River drainage, New Mexico. Southwest. Nat. 34:402-
412.
States that Gila spp. are definitely extirpated from the San
Francisco portion of the upper Gila system in New Mexico but
that populations of G. robusta remain in the upper Gila
proper from near Redrock, NM, upstream. Main river
occurrence is sporadic but good headwater populations occur
in Turkey Creek (somewhat intermedia-like) and Middle and
East forks of the Gila northeast of Cliff.
Gila River System--Santa Cruz
Minckley, W.L. 1969. Aquatic biota of the Sonoita Creek basin,
Santa Cruz County, Arizona. The Nat. Conserv. Ecol. Stud.
Leaf. 15. 8 p.
Discusses the occurrence of a substantial, and possibly
somewhat differentiated, population of Gila intermedia in
the upper Santa Cruz system in Monkey Spring and its
apparent extirpation from Sonoita Creek and other localities
downstream of the spring.
Smith, R. 1884. Squalius lemmonii, a new cyprinid fish from
southern Arizona. Proc. Cal. Acad. Sci. 3: 111-112.
Documents the former occurrence of G. intermedia in Rellito
Creek near Tucson, AZ.
Gila River System--San Pedro
35