Formosan subterranean termite swarming behavior and alate sex-ratio (Isoptera: Rhinotermitidae) |
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| Authors: | G. Henderson K. S. Delaplane |
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| Affiliation: | (1) Department of Entomology, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, 70803 Baton Rouge, LA, USA;(2) Department of Entomology, College of Agriculture and Environmental Sciences, University of Georgia, 30602 Athens, GA, USA |
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| Abstract: | Summary The Formosan subterranean termite (Coptotermes formosanus Shiraki) was first sighted in the cities of New Orleans and Lake Charles, Louisiana, in 1966. Its distribution in the historic French Quarter of New Orleans 23 years later (1989) and in 1991 and 1992 is reported here using counts of alates from light-traps. Light-trappings revealed a Quarter-wide distribution of the termite.C. formosanus shows an extended pause in flight behavior in the middle of the two-month flight season that is predictable and independent of weather. A colony-level mechanism, namely, developmental inhibition of nymphs by alates, may regulate this intermission in flight. The sex-ratio of light-trapped alates varies over time, but is generally female-biased, especially at the height of the flight season. |
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| Keywords: | Coptotermes formosanus flight phenology pheromone inhibition alate sex-ratio |
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