Location: Aerial Application Technology ResearchTitle: A Multiyear Study on Seasonal Flight Activity Based on Captures of Southern Green Stink Bug (Hemiptera: Pentatomidae) in Blacklight Traps in Central Texas
|LOPEZ, JUAN DE DIOS - Retired ARS Employee|
|Latheef, Mohamed - Ab|
Submitted to: Journal of Cotton Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/1/2014
Publication Date: 9/10/2014
Citation: Lopez, J., Latheef, M.A., Hoffmann, W.C. 2014. A multiyear study on seasonal flight activity based on captures of southern green stink bug (Hemiptera: Pentatomidae) in blacklight traps in Central Texas. Journal of Cotton Science. 18:153-165.
Interpretive Summary: The southern green stink bug is a serious insect pest that feeds on many cultivated plants and reduces yield and transmits fungal and bacterial pathogens. Long-term studies were conducted to determine the seasonal flight activity and numerical changes in the season-long captures of stink bugs. Over the 10 year period of these studies, the numbers of southern green stink bugs significantly decreased in relation to an increase in the number of pesticide sprays in the area over the same time period. Results demonstrate that blacklight traps are a useful sampling tool for determining stinkbug population numbers and to assess seasonal flight activity of stinkbugs in production agriculture.
Technical Abstract: The southern green stink bug, Nezara viridula (L.) (Hemiptera: Pentatomidae), is cosmopolitan in distribution and feeds on many cultivated plants. On cotton, it reduces yield and transmits fungal and bacterial pathogens that result in necrosis of the locule and boll rotting. Objectives of this study were to determine the seasonal flight activity and to assess numerical changes in the season-long captures of N. viridula in blacklight traps. Traps were established in a commercial farmscape where cotton and corn were the predominant crops. Minor crops grown in the area were milo, soybean, pecan, and watermelon. Study areas included four to five locations during each year from 2003 to 2011 in Burleson County of Central Texas. Frequency distribution of seasonal counts of N. viridula conformed to a clumped dispersion pattern, when analyzed by Taylor’s Power Law and negative binomial distribution as probability models. Counts transformed by a power law function adequately uncoupled the mean and the variance of the data better than those transformed by log transformation. Significantly and consistently, more females than males were captured in traps. Peak captures of N. viridula in traps generally occurred in August. August counts of the insect declined precipitously from a monthly mean of 177 in 2003 to near zero in 2011. Results of this study demonstrate that blacklight traps are a useful sampling tool for determining N. viridula population numbers and to assess their seasonal flight activity in production agriculture.