1989
Simons, Lee H., Dean A. Hendrickson, and Diana Papoulias. “Recovery of the Gila Topminnow: A Success Story?.” Conservation Biology 3 (1): 11–15. Publisher’s Version
Hendrickson, Dean A., and Alejandro Varela-Romero. “Conservation status of desert pupfish, Cyprinodon macularius , in Mexico and Arizona.” Copeia, no. 2: 478–483. Publisher’s Version
Abstract
The authors sampled for fishes at 23 historic and potential Mexican habitats of the endangered desert pupfish, Cyprinodon macularius Baird and Girard. Though pupfish were found at 11 localities, ichthyofaunas of the region were typically dominated by exotics. Desert pupfish was found at two sites from which it had been reported extirpated. One site was found to function as an extensive pupfish refugium from which other species were apparently excluded by water quality. It is concluded that the range of species has been dramatically reduced over the last century by habitat modification and introductions of exotic fishes. Probable continued habitat alterations and limited distribution and population size in natural populations, as well as limited success of reintroduction attempts, require that the species remain considered to be very much endangered
Williams, Jack E., James E. Johnson, Dean A. Hendrickson, Salvador Contreras-Balderas, James D. Williams, Miguel Navarro-Mendoza, Don E. McAllister, and James E. Deacon. “Fishes of North America: endangered, threatened, or of special concern (1989).” Fisheries 14 (6): 2–20.