caa a22 4500 397570953 CHVBK 20180308164841.0 cr unu---uuuuu 161202e19960401xx s 000 0 eng 10.1093/ee/25.2.505 doi (NATIONALLICENCE)oxford-10.1093/ee/25.2.505 Suppression of Beetles in Stored Wheat by Augmentative Releases of Parasitic Wasps [Elektronische Daten] [P. W. Flinn, D. W. Hagstrum, W. H. Mcgaughey] Field studies were conducted to assess the effectiveness of the parasitoid wasps, Cephalonomia waterstoni (Gahan), and Choetospila elegans (Westwood), for controlling Cryptolestes ferrugineus (Stephens), rusty grain beetle and Rhyzopertha dominica (F.), lesser grain borer. On 6 July 1993 and 7 July 1994, adults of both C. ferrugineus and R. dominica were released at monthly intervals into 6 steel grain bins each containing 27.2 t of hard red winter wheat, Triticum aestivum L. Adults of both parasitoid species were released into 3 of the bins 21 d after the 1st beetle release. The amount of suppression of C.ferrugineus by C. waterstoni could not be measured in either year of this study because C. waterstoni infested the control bins. However, C. elegans was effective in suppressing R. dominica populations. In 1993 and 1994, R. dominica populations were suppressed by 98 and 91% compared with the control bins. After 198 d from initial beetle release in 1993, the treatment bins averaged 0.05 R. dominica per kilogram and the control bins averaged 2.06 R. dominica per kilogram. After 131 d from initial beetle release in 1994, the treatment bins averaged 6.94 R. dominica per kilogram and the control bins averaged 81.03 R. dominica per kilogram. © 1996 Entomological Society of America Physiological and Chemical Ecology nationallicence Rhyzopertha dominica nationallicence Cryptolestes ferrugineus nationallicence Choetospila elegans nationallicence Cephalonomia waterstoni nationallicence biological control nationallicence stored-products nationallicence Flinn P. W. U.S. Grain Marketing Research Laboratory, USDA-ARS, Manhattan, KS 66502 aut Hagstrum D. W. U.S. Grain Marketing Research Laboratory, USDA-ARS, Manhattan, KS 66502 aut Mcgaughey W. H. U.S. Grain Marketing Research Laboratory, USDA-ARS, Manhattan, KS 66502 aut Environmental Entomology Oxford University Press 25/2(1996-04-01), 505-511 0046-225X 25:2<505 1996 25 ee https://doi.org/10.1093/ee/25.2.505 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.2.505 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Flinn P. W. U.S. Grain Marketing Research Laboratory, USDA-ARS, Manhattan, KS 66502 aut NATIONALLICENCE 700 1- Hagstrum D. W. U.S. Grain Marketing Research Laboratory, USDA-ARS, Manhattan, KS 66502 aut NATIONALLICENCE 700 1- Mcgaughey W. H. U.S. Grain Marketing Research Laboratory, USDA-ARS, Manhattan, KS 66502 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/2(1996-04-01), 505-511 0046-225X 25:2<505 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford