Translator Disclaimer
1 December 2012 Habitats Used by the Endangered Fountain Darter (Etheostoma fonticola) in the San Marcos River, Hays County, Texas
Mara L. Alexander, Catherine T. Phillips
Author Affiliations +

We examined algae and macrophytes used as habitats by the endangered fountain darter Etheostoma fonticola through examination of six probable microhabitats. Rhizoclonium, Ludwigia repens, and Hydrilla verticillata had the greatest densities of fountain darters, although all six species of plants tested had fountain darters in ≥5% of samples. The smallest darters were in Rhizoclonium, and the largest were in Potamogeton illinoensis. This likely was due to differences in current velocity among microhabitats. In the San Marcos River, it is important for fountain darters to have vegetated areas with dense cover to provide food, reproductive habitats, and refugia.

Examinamos las algas y macrofitas utilizadas para hábitats por Etheostoma fonticola (un pececito en peligro de extinción) a través de una examinación de seis probables microhábitats. Rhizoclonium, Ludwigia repens, y Hydrilla verticillata tuvieron las mayores densidades de E. fonticola, aunque todas de seis especies de plantas analizadas tuvieron E. fonticola en ≥5% de las muestras. Etheostoma fonticola más pequeños estuvieron en Rhizoclonium, y los dardos más grandes estuvieron en Potamogeton illinoensis. Esto fue probablemente a causa de las diferencias en la velocidad de la corriente entre los microhábitats. En el río San Marcos, es importante que E. fonticola tenga áreas con vegetación con cobertura densa que pueda proporcionar alimento, hábitat para reproducción y refugio.

Mara L. Alexander and Catherine T. Phillips "Habitats Used by the Endangered Fountain Darter (Etheostoma fonticola) in the San Marcos River, Hays County, Texas," The Southwestern Naturalist 57(4), 449-452, (1 December 2012).
Received: 26 December 2010; Accepted: 1 May 2012; Published: 1 December 2012

Get copyright permission
Back to Top