Drosophila suzukii. Monitoring in Switzerland. C.A. Baroffio, S. Fischer, P.Kehrli, S.Kuske, C.Linder, P. Richoz

Transcription

1 Département fédéral de l'économie DFE Agroscope Drosophila suzukii Monitoring in Switzerland C.A. Baroffio, S. Fischer, P.Kehrli, S.Kuske, C.Linder, P. Richoz

2 1. Situation. Invasion in Switzerland 2. Selectivity test for various models of monitoring traps 3. National monitoring network Lab tests on attractive compounds 5. Control strategy, assessment 6. Prospects

3 1. Situation in 2011 Monitoring 2011 Captures : No Yes Damages 3

4 2. Selectivity test for various models of monitoring traps (field) in 2012 Table 1: Trap Description Droso-Trap Vol.: 1300 ml 3 lateral openings Ø 1.2cm McPhail Vol.: 2600 ml 1 basal opening Ø 4.5cm Sentomol Vol.: 1000 ml 12 lateral openings Ø 1cm Agroscope Vol.: 1300 ml 16 lateral openings Ø 3mm - Aim: estimate the potential impact on the entomofauna - Lure used: cider vinegar + water + (+ red wine) wetting agent 4

5 2. Selectivity test for various models of monitoring traps in cherry and raspberry in Trap ACW completely selective for small insects (> 95 % Drosophilidae) - Droso Trap was improved by placing a net in front of the openings 5

6 3. Selectivity test

7 2. Selectivity test 2013 Drosophilidae effective catches Mc Phail Sentomol Becherfalle 2012 Becherfalle 2013 Hemitrap Drosotrap classic Drosotrap New 7

8 3. National monitoring network 2012 Participation of agricultural services of all the States (2-15 traps/canton) Agroscope has created and provided the traps (with financial support from Andermatt Biocontrol, Vitiswiss and Fruit Union Suisse) Lure: usually vinegar + water. During the season many participants have added ~1/3 of red wine Weekly survey, generally by Agroscope (via lime plates sent by post) Weekly update on the Internet website (~ visits in 2012) 8

9 3. National monitoring network 2012 AVRIL MAI JUIN JUILLET AOÛT SEPTEMBRE OCTOBRE SEMAINES/ WOCHEN ACW (VS) AI AG AR BL BE FR LU GE GL GR JU NE NW SG SH SZ SO TG TI UR VD ZH 9

10 3. National monitoring network

11 3. National monitoring network

12 3. Monitoring 2013 AVRIL MAI JUIN JUILLET AOÛT SEPTEMBRE OCTOBRE SEMAINES/ WOCHEN ACW (VS) AI AG AR BL BE FR LU GE SYNTHESE GL MONITORING 2013 Drosophila suzukii GR AVRIL MAI JUIN JUILLET AOÛT JU NE SEMAINES/ NW WOCHEN SG AG SH SZ AR SO BL TG TI BE UR FR VD GE GL GR Nord Gr Süd ZH JU Début monitoring : fin juin LU NE NW keine monitoring 2013 SG SH SZ SO TG TI UR VD VS ZG ZH D. suzukii nichtvorhanden / absence de D. suzukii D. suzukii vorhanden / présence de D. suzukii 12

13 3. Monitoring Catches D. suzukii, monitoring traps avril mai juin juillet août 13

14 Nr of catches Nombres adultes capturés 4. Lab tests on attractive compounds Aim: Attractive liquid must be better than the fruits! Piéges / Fruits females males femelles mâles total Lockstoff mass trapping Gasser rép.1 Lockstoff mass trapping Gasser rép. 2 Fraise 'Mara des Bois', 6 Fraise 'Mara des Bois', 6 fruits rép. 1 fruits rép. 2 1A 1B 2A 2B 14

15 5. Control strategy 15

16 5. Control strategy Mass trapping, principle Phase 1 Autumn- Spring Phase 2 Only if necessary Danger to attract SWD in the plot Phase3 Mass trapping Monitoring trapping If catches or in the neighborhood If catches in the plot 16

17 5. Control strategy Control method: Weekly 50 fruits in the freezer Larvae come on the fruit surface! : 17

18 Sanitary : important Short intervall between 2 yields Over mature fruits away Nothing on the ground Gärung destruction without oxygen 18

19 5. Control strategy for small fruits Insecticides Lambda-cyalothrin Karate Ravane kendo BBCH : trait/parcelle Spinosad Audienz BBCH : trait/parcelle Pyrethrine Parexan BBCH : Pyrethrum FS 2 trait/parcelle Thiacloprid Alanto BBCH : trait/parcelle 0.04% (0.4kg/ha) DA : 7 jours 0.02% (0.2l/ha) DA : 3 jours 0.15% (1.5l/ha) DA : 3 jours 0.02% (0.21l/ha) DA : 3 jours Residue problems with everbearing strawberries when treated 2 times 1 week apart with spinosad No problems with raspberries 19

20 7. Trials Repulsive plants in tunnels Evaluation of mass trapping efficiency Study of the interaction D.suzukii / indigenous Drosophila (lab, cultures) Study of wintering: places, resistance, physiological state (lab, nature) 20

21 Thank you for your attention! 21