| Title: | Fragrance of Canada thistle (Cirsium arvense) attracts both floral herbivores and pollinators |
| Address: | "Department of Ecology and Evolution, State University of New York, Stony Brook, NY 11794, USA. ntheis@nsm.umass.edu" |
| DOI: | 10.1007/s10886-006-9051-x |
| ISSN/ISBN: | 0098-0331 (Print) 0098-0331 (Linking) |
| Abstract: | "The evolution of floral scent as a plant reproductive signal is assumed to be driven by pollinator behavior, with little attention paid to other potential selective forces such as herbivores. I tested 10 out of the 13 compounds emitted by dioecious Cirsium arvense, Canada thistle, including 2-phenylethanol, methyl salicylate, p-anisaldehyde, benzaldehyde, benzyl alcohol, phenylacetaldehyde, linalool, furanoid linalool oxides (E and Z), and dimethyl salicylate. Single compounds (and one isomer) set out in scent-baited water-bowl traps trapped over 10 species of pollinators and 16 species of floral herbivores. The two dominant components of the fragrance blend of C. arvense, benzaldehyde and phenylacetaldehyde, trapped both pollinators and florivores. Other compounds attracted either pollinators or florivores. Florivores of C. arvense appear to use floral scent compounds as kairomones; by advertising to pollinators, C. arvense also attracts its own enemies" |
| Keywords: | Acetaldehyde/analogs & derivatives/chemistry/isolation & purification Animals Benzaldehydes/chemistry/isolation & purification Cirsium/*chemistry/parasitology/physiology Ecosystem Flowers/chemistry/physiology Gas Chromatography-Mass Spectrometry Insecta/p; |
| Notes: | "MedlineTheis, Nina eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2006/06/02 J Chem Ecol. 2006 May; 32(5):917-27. doi: 10.1007/s10886-006-9051-x. Epub 2006 May 19" |
