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J Econ Entomol

Title:		Refrigerated eggs of Riptortus pedestris (Hemiptera: Alydidae) added to aggregation pheromone traps increase field parasitism in soybean
Author(s):		Alim MA; Lim UT;
Address:		"Hajee Mohammad Danesh Science and Technology University, Entomology Dinajpur 5200, Bangladesh"
Journal Title:		J Econ Entomol
Year:		2011
Volume:		104
Issue:		6
Page Number:		1833 - 1839
DOI:		10.1603/ec11143
ISSN/ISBN:		0022-0493 (Print) 0022-0493 (Linking)
Abstract:		"Riptortus pedestris (F.) (Hemiptera: Alydidae) is a key pest of soybean [Glycine max (L.) Merr.] in Korea and Japan. Aggregation pheromone traps have been used to attract R. pedestris. An aggregation pheromone, produced by males of R. pedestris, also attracts the egg parasitoid, Ooencyrtus nezarae Ishii (Hymenoptera: Encyrtidae). As a new method of pest management, we propose the use of nonviable host eggs in the pheromone trap together to both trap R. pedestris and propagate parasitoids on host eggs attached to the trap. Approximately ten-thousand nonviable refrigerated host eggs were placed outside pheromone traps in three soybean fields (0.167-0.284 ha.). During the sampling period from 7 August to 8 October in 2008, statistical significance of treatment was not found in any life stage of R. pedestris population. However, significantly higher parasitism of both natural (78-91%) and refrigerated eggs (36-59%) occurred in the treatment sites, compared with control sites where parasitism was 0-62% and 16-34% on natural and refrigerated eggs, respectively. The proportion of bean pods with stink bug feeding damage was significantly reduced by 47% in the treatment sites. This study is the first trial of an integrated pest management (IPM) strategy using both nonviable host eggs and trap that simultaneously targets both the pest and its natural enemy"
Keywords:		Analysis of Variance Animals *Cold Temperature Female Hemiptera/growth & development/*parasitology/physiology Insect Control/*methods Male Nymph/growth & development/parasitology/physiology Ovum/growth & development/parasitology/*physiology *Pheromones Po;
Notes:		"MedlineAlim, M Abdul Lim, Un Taek eng Evaluation Study Research Support, Non-U.S. Gov't England 2012/02/04 J Econ Entomol. 2011 Dec; 104(6):1833-9. doi: 10.1603/ec11143"