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The status of Moapa coriacea and Gila seminuda and status information on other fishes of the Muddy River, Clark County, Nevada

Southwestern Naturalist
By: , , , and 

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Abstract

Moapa coriacea is endemic to the headwaters (Warm Springs area) of the Muddy River, Clark County, Nevada. The Warm Springs area was snorkeled and Moapa coriacea and Gila seminuda enumerated in August 1994 after a fire, and in May 1997 after a diversion dam had been removed from the downstream end. Gila seminuda had been reported in greatest abundance downstream from the Warm Springs area and we estimated the population there through mark and recapture from January to March 1995. There was a dramatic reduction in native fishes in the Warm Springs area between 1994 and 1997, coinciding with the invasion of Oreochromis aurea. Downstream from the Warm Springs area Gila seminuda was the most frequently netted species while O. aurea was relatively scarce. The fish population (native and non-native) decreased in a downstream direction; the causative factor(s) have not been identified.

Suggested Citation

Scoppettone, G., Rissler, P., Nielsen, M., Harvey, J., 1998, The status of Moapa coriacea and Gila seminuda and status information on other fishes of the Muddy River, Clark County, Nevada: Southwestern Naturalist, v. 43, no. 2, p. 115-122.

Study Area

Publication type Article
Publication Subtype Journal Article
Title The status of Moapa coriacea and Gila seminuda and status information on other fishes of the Muddy River, Clark County, Nevada
Series title Southwestern Naturalist
Volume 43
Issue 2
Year Published 1998
Language English
Publisher Southwestern Association of Naturalists
Contributing office(s) Western Fisheries Research Center
Description 8 p.
First page 115
Last page 122
Country United States
State Nevada
County Clark Conty
Other Geospatial Muddy River
Additional publication details