Soybean Aphid Suction Traps What are they What

Soybean Aphid Suction Traps What are they, What can they tell us? Eileen Cullen, Extension Entomologist University of Wisconsin – Extension University of Wisconsin, Madison Entomology Dept. Illinois suction trap data provided courtesy of David Voegtlin Center for Ecological Entomology Illinois Natural History Survey

Soybean Aphid Suction Trap Photo Courtesy of David Voegtlin

Summer population Spring SOYBEAN Migrants Fall BUCKTHORN Eggs Chris Di. Fonzo MSU Entomology Department

Dr. David Voegtlin Univ. of Illinois IL Natural History Survey Soybean aphid suction trap. Can we anticipate high soybean aphid years? 2004 Illinois suction trap locations. Nine sites, one trap per location.

Soybean aphid eggs on Buckthorn Photo by D. Voegtlin Soybean aphid eggs overwinter on Buckthorn Sept. – Oct. Trap Catch: Winged migrants (female & male) Moving from soybean to buckthorn. Size and success of this migration can influence population the following season.

Illinois Suction Traps - 2001 Free. 27 July De. K. Mon. Urbana Perry Brown. Dixon Spr. 82 5 6 1 2 0 0 149 886 32 2 0 55 262 21 0 1 5 2 3 0 0 0 1 0 0 0 5 0 1 0 0 7 Sept. 14 Sept. 21 Sept. 28 Sept. 0 0 5 3 0 0 0 1 0 0 0 4 0 0 3 0 0 0 0 5 Oct. 12 Oct. 2 0 0 0 0 3 1 0 3 August 10 August 17 August 24 August 31 August David Voegtlin, Illinois Natural History Survey

Illinois Suction Traps - 2002 Free. 19 July 0 26 July 0 2 August 0 9 August 0 16 August 0 23 August 0 30 August 0 6 Sept. 0 De. K. Mon. Urbana Perry Brown. Dixon Spr. 3 0 4 0 3 3 10 0 41 5 6 6 0 0 13 19 8 0 5 0 22 8 0 2 10 0 0 4 0 0 2 1 0 0 0 0 David Voegtlin, Illinois Natural History Survey

Illinois Suction Traps - 2003 Free. De. K. Mon. 0 21 176 112 0 1 131 940 0 0 1 59 0 0 2 142 0 0 0 4 0 0 0 3 0 0 0 1 1 August 8 August 15 August 22 August 29 August 787 1, 912 1, 810 1, 347 26 6, 755 4, 890 286 264 29 71 569 1, 403 2, 690 209 401 4, 920 1, 090 921 50 9 163 602 1, 131 215 8 232 1, 560 620 85 1 18 1, 535 4, 113 1, 060 0 0 31 2 67 5 Sept. 12 Sept. 0 19 Sept. 0 26 Sept. 0 1 0 0 0 3 0 1 0 8 0 1 0 2 0 0 0 6 0 0 0 3 0 0 0 25 0 0 0 1 3 Oct. 10 Oct. 17 Oct. 0 0 0 0 0 3 5 0 0 0 2 1 0 0 5 0 0 4 4 July 11 July 18 July 25 July Eur. Urbana Perry Brown. D. Spr. David Voegtlin, Illinois Natural History Survey

Illinois Suction Traps - 2004 Free. De. K. Jol. Mon. Eur. Urbana Perry Brown. D. Spr. 30 July 1 0 1 1 4 0 0 6 August 13 August 20 August 27 August 1 1 1 0 0 1 0 1 3 1 2 1 0 0 1 4 1 0 0 0 0 0 3 Sept. 10 Sept. 17 Sept. 24 Sept. 0 3 39 83 0 2 20 26 0 0 0 6 4 19 78 16 2 15 105 48 0 3 6 7 6 12 357 164 1 0 11 41 0 0 0 3 1 Oct. 8 Oct. 15 Oct. 22 Oct. 13 13 0 - 20 4 4 - 3 4 0 25 2 0 0 132 19 5 1 32 3 4 - 289 7 48 15 25 2 - 6 5 4 3 David Voegtlin, Illinois Natural History Survey

Illinois Suction Trap Trends Fall 2001 Trap Catches Very Low 2002 Growing Season low soybean aphid year Fall 2002 Traps caught 700+ migrants 2003 Growing Season high soybean aphid year Fall 2003 Trap Catches again Very Low 2004 Growing Season very low soybean aphid year Fall 2004 Traps caught 1, 765 migrants 2005 Growing Season ? ? Scouting will be Critical.

Suction Trap Locations Coming to WI Summer 2005!

Acknowledgements Funding for Soybean Aphid Suction Traps Provided by: North Central Integrated Pest Management (NCIPM) Regional Research Coordination and Aphid Identification: Dr. David Voegtlin, Center for Ecological Entomology Illinois Natural History Survey

Eileen Cullen UW Madison Entomology Department Extension Entomologist University of Wisconsin Entomology Department 1630 Linden Drive Madison, WI 53706 Tel: (608) 261 -1507 E-mail: cullen@entomology. wisc. edu