7787

• UCREFRP Catalog Number: 7787
• Author: Desert Fishes Council.
• Title: Proceedings of the Desert Fishes Council Volume XXV, 1993 Annual Symposium.
• USFW Year: 1993.
• USFW - Doc Type: D. A. Hendrickson, ed. November, 10 -14.
• Copyright Material: NO

ABSTRACTS OF PRESENTATIONS
bicolor thalassina and Catostomus occidentalis lacusanserinus). Genetic analysis of the speckled dace Rhinichthys
osculus is completed for Death Valley and ongoing for the Los Angeles basin. Funding was obtained for habitat
restoration for Gasterosteus aculeatus. The second edition of Fish Species of Concern of California is in the final
review cycle. The Department supported the idea of developing a nationwide Aquatic Diversity Management Areas
program patterned after the California program which was developed by Peter Moyle.
RESUMEN
El Departamento se ha coordinado con el BLM y USFWS para desarrollar tin plan de recuperaci6n
multi-especifico de habitats acuaticos, riparios y ci6negas alcalinas en la cuenca del Rio Owens. El plan incluye
plantas, peces (Gila bicolor snyderi) y (Cyprinodon radiosus), invertebrados, aves y mamiferos.
Estan en proceso estudios sobre el ciclo de vida y habitat para Deltistes luxatus y Chasmistes brevirostris en los
lagos Clear y Tulle en la Cuenca Klamath. Estan en proceso los estudios de distribuel6n y tipificaci6n de habitat en
la cuenca del lago Goose para (Lampetra tridentata ssp., Oncorhynchus mykiss ssp., Gila bicolor thalassina y
Catostomus occidentalis lacusanserinus). Se concluy6 el analysis gen6tico del pececito moteado Rhinichthys osculus
en el Valle de la Muerte y esta en proceso para la cuenca Los Angeles. Se obtuvo apoyo financiero para la
restaurael6n del habitat de Gasterosteus aculeatus. La segunda edici6n del libro Especies en Riesgo de Peces de
California, se encuentra en el ciclo de revision final. El Departamento apoy6 la idea de desarrollar tin programa
de Manejo de Areas con Diversidad Acuatica a to largo del pats, el cual sera adaptado del programa de California
desarrollado por Peter Moyle.
n
Hmwm, J.E• j SJOBERG, T sJ.C. Nevada Department of Wildlife, Region 111, 4747 Vegas Drive, Las Vegas, Nevada 89108
Status of Nevada fishes
Estado actual de los peces de Nevada
KEYWORDS: Ash Meadows; Nevada; Pahranagat Valley; poolfish; razorback sucker; roundtail chub; speckled dace; spinedace; springfish;
Virgin River
CLAVES: Ash Meadows; Nevada; Valle Pahranagal; Pez de laguna; matalote jorobado; charalito cola redonda; pececito moteado; spinedace;
ez de manantial; Rio Virgen
ABSTRACT
The Nevada Department of Wildlife (NDOW) Endemic Fish Program has responsibility for the monitoring,
status evaluation, and program coordination for all species and sub-species of endemic, non-game fish within the
geographic boundaries of the state of Nevada. Of the 94 extant species and subspecies known to be native to
Nevada, 57 are listed by the United States Fish and Wildlife Service (FWS). Of these 57 listed species; twenty (20)
have been listed as endangered and five (5) species have been listed as threatened. The remaining 32 species are
identified as candidates for Federal listing. The primary concentration of effort at this time has been on the
implementation and coordination of Section 6 funded projects for federally listed species, with inventory and
evaluation of state-listed sensitive species being conducted on a time-available basis.
Major activities during 1992/1993 included the following species:
1. Pahrump killifish, Empetrichthys latos lator - Census work was conducted on the three populations of
Pahrump killifish at Corn Creek, Spring Mountain Ranch State Park, and Shoshone Ponds Refugium. All
populations are stable at 14,770, 11,100, and 2,900 respectively. Initial steps at down-listing of this fish were taken
in 1992.
2. Hiko White River springfish, Crenichthys baileyi grandis - Populations were monitored at Hiko, Crystal,
and Blue Link Springs. The Hiko and Blue Link populations are stable at populations of 5,480 and 9,460
respectively. The springfish at Crystal Spring remain at a severely depressed level due primarily to the numbers
of exotic fish present in the spring source pools and outflows. The current population is estimated at 20-30 fish.
Plans for eradication of exotic species at this spring are being made.
3. White River springfish, Crenichthys baileyi baileyi - Populations of the White River springfish are still
improving due to limited use of Ash Spring. Ash Spring has been available for purchase for over a year now. In
1993, numbers of springfish were estimated to be 7,100 at Ash Spring.
The outflow from Ash Spring, listed as critical habitat for both the springfish and the Pahranagat roundtail
chub, Gila robusta jordani, is located on private lands. Estimates of Pahranagat roundtail were made by establishing
dive transects within this reach. In September 1993, adults totaled 153, while juveniles totaled 457.
4. White River spinedace, Lepidomeda albivallis - Surveys in 1993 have indicated less than 50 fish remain in
a single spring on State lands at the Kirch Wildlife Management Area. All other spinedace populations in this Valley
have been lost. This spring is now protected from exotics, largemouth bass, and work is being done to increase
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