| Title: | Identification of a Pheromone Component and a Critical Synergist for the Invasive Beetle Callidiellum rufipenne (Coleoptera: Cerambycidae) |
| Author(s): | Zou Y; Rutledge CE; Nakamuta K; Maier CT; Hanks LM; Richards AB; Lacey ES; Millar JG; |
| Address: | "Department of Entomology, University of California, Riverside, CA 92521 (yunfan.zou@ucr.edu; emerson.lacey@ucr.edu; jocelyn.millar@ucr.edu). Department of Entomology, The Connecticut Agricultural Experiment Station, New Haven, CT 06504 (Claire.Rutledge@ct.gov; chris.maier@ct.gov). Graduate School of Horticulture, Chiba University, Matsudo, Chiba 271-8510, Japan (nakamuta@faculty.chiba-u.jp). Department of Entomology, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (hanks@life.illinois.edu), hanks@life.illinois.edu. Aquatic Bioassessment Laboratory, California State University, Chico, CA 95929 (ARichards@csuchico.edu)" |
| ISSN/ISBN: | 1938-2936 (Electronic) 0046-225X (Linking) |
| Abstract: | "The invasive Asian cerambycid beetle Callidiellum rufipenne (Motschulsky), informally known as the Japanese cedar longhorned beetle, was first detected in North America in North Carolina in 1997. The beetle has since been detected in neighboring states and is expected to further expand its range. However, delineating the current distribution of C. rufipenne has been hindered by the lack of efficient sampling methods. Here, we present the results of research on the chemistry of volatile pheromones of C. rufipenne. Analyses of headspace odors revealed that males produce (R)-3-hydroxyhexan-2-one, with lesser amounts of (S)-3-hydroxyhexan-2-one, and (R)- and (S)-2-hydroxyhexan-3-one. In field bioassays conducted over several years in Connecticut, where populations of the beetle were well established, no reconstructed blend of these compounds was significantly attractive to beetles of either sex. However, during field trials in Japan that targeted another species, we discovered that adult male and female C. rufipenne were attracted to a blend of racemic 3-hydroxyhexan-2-one and a novel natural product, 1-(1H-pyrrol-2-yl)-1,2-propanedione. Attraction to (R)-3-hydroxyhexan-2-one and the pyrrole subsequently was confirmed in field trials in Connecticut. Although it is unclear why the pyrrole acts as a synergist for a species that apparently does not produce it, the serendipitous discovery that adult C. rufipenne are attracted by the blend of ketone and pyrrole provides a badly needed method for monitoring its ongoing range expansion within North America, and for detecting new introductions in other parts of the world" |
| Keywords: | Animals Coleoptera/*physiology Connecticut Female Hexanones/isolation & purification/*pharmacology Introduced Species Japan Male Odorants Pheromones/isolation & purification/*pharmacology invasive species longhorned beetle monitoring semiochemical synergi; |
| Notes: | "MedlineZou, Yunfan Rutledge, Claire E Nakamuta, Kiyoshi Maier, Chris T Hanks, Lawrence M Richards, Austin B Lacey, Emerson S Millar, Jocelyn G eng Research Support, U.S. Gov't, Non-P.H.S. England 2015/10/30 Environ Entomol. 2016 Feb; 45(1):216-22. doi: 10.1093/ee/nvv165. Epub 2015 Oct 27" |
