The 2005 ESA Annual Meeting and Exhibition
December 15-18, 2005
Ft. Lauderdale, FL

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Friday, December 16, 2005
0440

Use of leafhoppers (Hemiptera: Cicadellidae) as an indicator of prarie health

Therese A. Catanach, tacatanach@tamu.edu, Texas A&M University, Department of Entomology, 2475 TAMU, College Station, TX

According to various researchers, leafhoppers (Hemiptera: Cicadellidae) contain some prairie-restricted genera that can be used to indicate prairie health. To support restoration efforts of the Heard Nature Museum and Wildlife Sanctuary in McKinney, Texas, leafhopper populations were examined at four prairie sites. The four prairies were divided up into two groups, less degraded and more degraded, based on land use history and plant diversity. The less degraded group included a virgin prairie and two with little to moderate degradation; while the more degraded group was made up of one severely degraded site. To determine if differences existed between the two groups, leafhoppers were collected at least monthly from June 2001 to November 2001 and the population data then statistically analyzed using a Two Factor Analysis of Variance Test. The data collected consisted of the number of each leafhoppers collected from each genus, from each site on each collection day. Due to the differences in transect lengths between the sites; the numerical data (number of leafhoppers in each genus from each site by date) was normalized. It was found that there was a significant difference in the leafhoppers collected between the two groups. In conclusion, it was found that leafhoppers could be used to tell a more degraded prairie from a less degraded prairie. This work is ongoing, and currently, how prescribed burns effect leafhopper populations is being studied. In the future, this research will also hope to find how leafhopper communities change as severely degraded prairie is restored.


Species 1: Hemiptera Cidadellidae
Keywords: Grassland insects