Response to host plant odors and aggregation pheromone by larvae of the Colorado potato beetle on a servosphere |
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| Authors: | Jennifer A Hammock Bryan Vinyard Joseph C Dickens |
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| Institution: | (1) United States Department of Agriculture, Agricultural Research Service, Henry A. Wallace Beltsville Agricultural Research Center, Plant Sciences Institute, Chemicals Affecting Insect Behavior Laboratory, 10300 Baltimore Blvd., Bldg. 007, Rm. 030, Beltsville, MD 20705, USA;(2) United States Department of Agriculture, Agricultural Research Service, Henry A. Wallace Beltsville Agricultural Research Center, Biometrical Counseling Service, Beltsville, MD 20705, USA |
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| Abstract: | Using a servosphere (locomotion compensator), locomotory behavior of Colorado potato beetle Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae) larvae was measured in detail in response to pulsed and non-pulsed odors of hostplant and
conspecific pheromone. Second instars showed decreased straightness of movement, and all larvae showed decreased speed, in
response to potato odor. Change in straightness by 2nd instars was also significantly affected by the interaction of pheromone
and pulsing treatments. Fourth instars showed increased positive anemotaxis in response to the combined hostplant and pheromone
odors. To our knowledge, this is the first demonstration of larval behavioral responses to adult pheromone in a holometabolous
insect. |
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| Keywords: | Aggregation pheromone Colorado potato beetle Host plant odor Larva orientation Leptinotarsa decemlineata Locomotion compensator Olfaction Potato Pulsed odor |
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