|Scientific Name:||Cyprinella proserpina|
|Species Authority:||(Girard, 1856)|
Moniana proserpina Girard, 1856
|Red List Category & Criteria:||Vulnerable B1ab(ii,iii,v)+2ab(ii,iii,v) ver 3.1|
|Reviewer/s:||Smith, K. & Darwall, W.R.T.|
|Facilitator/s:||Hammerson, G.A. & Ormes, M.|
This species is listed as Vulnerable because its extent of occurrence may be less than 20,000 sq km, area of occupancy apparently is less than 500 sq km, viable populations may occur in no more than 10 locations, and the species is probably experiencing declines in area of occupancy, habitat extent and quality, and population size.
|Range Description:||Range includes the Atlantic Slope of North America, in the basin of Rio Bravo (=Rio Grande), in rios San Carlos (= arroyos de Zorro, Lobo, and Tule) and San Rodrigo (=San Diego), Coahuila, and Devil's River, San Felipe, Pinto, Independence, and Las Moras creeks, and the lower Pecos river, Texas (Miller 2005, Bonner et al. 2008). Not in mainstream Rio Grande. Record from New Mexico (Koster 1957) apparently is erroneous, but the species may have occurred in the upper Pecos before aridity in the area increased (Mayden 1989).|
Native:Mexico; United States
|Range Map:||Click here to open the map viewer and explore range.|
This species is represented by probably fewer than 20 historical subpopulations; the number of extant, viable subpopulations might be no more than 10. The Texas Natural History Collections (1997) mapped 13 collection locations including 12 sites from Texas and one site from Mexico. Miller (2005) mapped 6 collection sites in Mexico.
Total adult population size is unknown but presumably exceeds 10,000. This is the second most common fish species found in the Devils River, Texas (Lee et al. 1980). It is common in Independence Creek in Texas (see Bonner et al. 2008). Page and Burr (2011) regarded it as fairly common.
The degree of long-term decline is uncertain. This species was eliminated from areas of the Pecos and Devils rivers that were inundated by Amistad Reservoir (Hubbs and Echelle 1972).
The current status of this species is poorly known (Edwards et al. 2002), but it is probably declining.
|Habitat and Ecology:||Habitat includes rocky runs and pools of creeks and small rivers (Page and Burr 2011); in clear streams, this shiner occupies habitats varying from pools to swift channels and riffles (Lee et al. 1980). It prefers clear and cool streams with a sand-gravel substrate (Mayden 1989). Miller (2005) described habitat as pools, swift channels, and riffles of clear, spring-fed streams 5-30 meters wide, at depths to 1.3 meters, with Chara, Potamogeton, algae, and other submergent vegetation.|
|Major Threat(s):||Threats include decreased spring flows, habitat loss and fragmentation, and alteration of flow regimes (Bonner et al. 2008). Increased stream turbidity, such as caused by overgrazing, reduces the abundance of this species (Hubbs and Echelle 1972). This species is resilient to flash floods but detrimentally impacted by dams (intolerant of reservoir conditions) (Bonner et al. 2008).|
|Conservation Actions:||Better information on abundance and trend at inhabited localities is needed.|
|Citation:||NatureServe 2013. Cyprinella proserpina. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 10 March 2014.|
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