|Bedoukian, Robert - Bedoukian Research, Inc|
|Hamilton, George - Rutgers University|
|Jentsch, Peter - Cornell University - New York|
|Maclean, Priscilla - Hercon Environmental|
|Morrison Iii, William - Rob|
|Shrewsbury, Paula - University Of Maryland|
|Wiman, Nik - Oregon State University|
Submitted to: Journal of Economic Entomology
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/17/2017
Publication Date: 12/20/2017
Citation: Rice, K.B., Bedoukian, R.H., Hamilton, G.C., Jentsch, P., Khrimian, A., Maclean, P., Morrison III, W.R., Short, B.D., Shrewsbury, P., Weber, D.C., Wiman, N., Leskey, T.C. 2017. Enhanced response of Halyomorpha halys (Hemiptera: Pentatomidae) to its aggregation pheromone with ethyl decatrieonate. Journal of Economic Entomology. 111(1):495-499. https://doi.org/10.1093/jee/tox316.
Interpretive Summary: Insects are attracted to visual and chemical cues. These stimuli can be used to enhance trap captures. The invasive brown marmorated stink bug (BMSB) is attracted to visual cues such as black lights and chemical cues such as aggregation pheromones. Previous studies found that when the aggregation pheromone is combined with another stink bug pheromone, methyl (2E,4E,6Z)-decatrieonate (MDT), BMSB captures in traps increase significantly. In this study, we report that an analogous chemical compound, ethyl (2E,4E,6Z)-decatrieonate (EDT), also serves as a synergist when combined with BMSB aggregation pheromone. When higher loadings of EDT were used, trap captures were similar to those baited with both MDT and the aggregation pheromone. We conclude that combining EDT with the aggregation pheromone and MDT in traps may further improve BMSB monitoring and management.
Technical Abstract: The invasive stink bug species, Halyomorpha halys (Stål), severely damages multiple agricultural commodities, resulting in disruption of established integrated pest management (IPM) programs. Several semiochemicals have been identified to attract H. halys to traps and monitor their presence, abundance, and seasonal activity. In particular, the two-component aggregation pheromone of H. halys, (3S,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol and (3R,6S,7R,10S)-10,11-epoxy-1-bisabolen-3-ol (PHER), in combination with the pheromone synergist, methyl (2E,4E,6Z)-decatrieonate (MDT), was found to be attractive. Here, we report that an analogous trienoate, ethyl (2E,4E,6Z)-decatrieonate (EDT), also serves as a synergist for the H. halys PHER. In trials conducted in Eastern and Western regions of the USA, we observed that when traps were baited with the H. halys PHER + EDT, captures were significantly greater than when traps were baited with PHER alone. Traps baited with EDT alone were not attractive. Moreover, captures in traps baited with PHER and EDT were statistically identical to those in traps baited with PHER and MDT when higher loading rates of EDT were used, demonstrating that this compound also serves as a synergist for PHER. Thus, the addition of EDT to lures for attracting H. halys to traps may further improve monitoring efficiency and management strategies for this invasive species.