Soybean Aphid Suction Traps What are they, What can they tell us?

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Soybean Aphid Suction TrapsWhat 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

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Soybean Aphid Suction Trap
Photo Courtesy of David Voegtlin
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Summer population
SOYBEAN
Spring
Migrants
Fall
BUCKTHORN
Eggs
Chris DiFonzo MSU Entomology Department
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Can we anticipate high soybean aphid years?
2004 Illinois suction trap locations. Nine
sites, one trap per location.
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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.
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Illinois Suction Traps - 2001
Free. DeK. Mon. Urbana Perry
Brown. Dixon Spr. 27 July 82
5 6 1 2 0 0 3 August 149
55 5 0 5 0 0 10 August 886
262 2 1 0 1 0 17 August 32 21 3 0 1 0 1 24
August 2 0 0 0 0 1 0 31 August 0
1 0 0 0 0 0 7 Sept. 0 0 0 0 0 0 0 14
Sept. 0 0 0 0 0 0 0 21 Sept. 5
0 0 3 0 0 0 28 Sept. 3 1 4 0 0 0 0 5
Oct. 2 2 0 0 0 3 0 12 Oct. 0
0 0 0 0 1
David Voegtlin, Illinois Natural History Survey
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Illinois Suction Traps - 2002
Free. DeK. Mon. Urbana Perry
Brown. Dixon Spr. 19 July 3 0 3
0 4 0
0 26 July 3 3 10 0
0 0 0 2 August 41 5
6 6 0 0
0 9 August 13 19 8
0 5 0
0 16 August 22 8 0 2
10 0 0 23 August 0
4 0 0 2 1
0 30 August 0 0 0
0 1 0 0 6
Sept. 0 1 0 0 0
0 0 13 Sept. 0 0
3 0 0 0
0 20 Sept. 0 0 17 0
2 0 0 27 Sept. 0 2
80 71 284 1
0 4 Oct. 0 38 62
13 133 1 0 11
Oct. 0 7 3 4 9 0
0
David Voegtlin, Illinois Natural History Survey
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Illinois Suction Traps - 2003
Free. DeK. Mon. Eur.
Urbana Perry Brown. D. Spr. 4 July
0 0 0 0 0 0
0 0 11July 21 1 0
0 0 0 0
0 18 July 176 131 1
2 0 0 0 0 25
July 112 940 59
142 2 4 3
1 1 August 787 6,755 71
401 9 8 1
0 8 August 1,912 4,890 569
4,920 163 232 18 0 15
August 1,810 286 1,403 1,090
602 1,560 1,535 31 22 August
1,347 264 2,690 921 1,131
620 4,113 2 29 August 26
29 209 50 215
85 1,060 67 5 Sept. 1 3 8
2 6 3 25 1 12
Sept. 0 0 0 0 0 0
0 0 19 Sept. 0 0 1 1 0
0 0 0 26 Sept. 0 0 0 0
0 0 0
0 3 Oct. 0 0 0 0 0
0 0 0 10 Oct. 0 0 0
3 0 2 0
0 17 Oct. 0 0 0 5
1 5 4
David Voegtlin, Illinois Natural History Survey
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Illinois Suction Traps - 2004
Free. DeK. Jol. Mon. Eur.
Urbana Perry Brown. D. Spr. 30 July 1
0 1 1 4 0 0 0 0 6 August 1
1 1 0 3 0 1 0 0 13 August 1 0
0 1 1 0 4 0 0 20 August 1 0
0 0 2 0 1 0 0 27August 0 1
1 1 1 0 0 0 0 3 Sept. 0 0
0 4 2 0 6 1 0 10 Sept. 3
2 0 19 15 3 12 0 0 17
Sept. 39 20 0 78
105 6 357 11
0 24 Sept. 83 26 6 16
48 7 164 41
3 1 Oct. 13 20 3
25 132 32 289
7 6 8 Oct. 13 4 -
2 19 3 48
15 5 15 Oct. 0
4 4 0 5 4
25 2 4 22 Oct.
- - 0 0
1 - - -
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David Voegtlin, Illinois Natural History Survey
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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.
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Suction Trap Locations Coming to WI
Summer 2005!
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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
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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_at_entomology.wisc.edu