Journal of Chemical Ecology

, Volume 30, Issue 6, pp 1285–1288

Floral CO2 Reveals Flower Profitability to Moths

  • Corinna Thom
  • Pablo G. Guerenstein
  • Wendy L. Mechaber
  • John G. Hildebrand
Article

DOI: 10.1023/B:JOEC.0000030298.77377.7d

Cite this article as:
Thom, C., Guerenstein, P.G., Mechaber, W.L. et al. J Chem Ecol (2004) 30: 1285. doi:10.1023/B:JOEC.0000030298.77377.7d

Abstract

The hawkmoth Manducasexta(Lepidoptera: Sphingidae), an experimentally favorable Lepidopteran that is highly sensitive to carbon dioxide (CO2), feeds on the nectar of a range of flowering plants, such as Datura wrightii (Solanaceae). Newly opened Datura flowers give off dramatically elevated levels of CO2 and offer ample nectar. Thus, floral CO2 emission could indicate food-source profitability. This study documents that foraging Manduca moths prefer surrogate flowers that emit high levels of CO2, characteristic of newly opened Datura flowers. We show for the first time that CO2 may play an important role in the foraging behavior of nectar-feeding insects.

Manduca sextaDaturawrightiiCO2labial-palp pit organinsect-plant interactionsforaging

Copyright information

© Plenum Publishing Corporation 2004

Authors and Affiliations

  • Corinna Thom
    • 1
  • Pablo G. Guerenstein
    • 1
  • Wendy L. Mechaber
    • 1
  • John G. Hildebrand
    • 1
  1. 1.Arizona Research Laboratories, Division of NeurobiologyUniversity of ArizonaTucsonUSA