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Studies on trapping of Fall Webworm moth,Hyphantria cunea (Drury) (Lepid., Arctiidae)

Untersuchungen zum Fallenfang des Weißen Bärenspinners,Hyphantria cunea (Drury) (Lepid., Arctiidae) mit Pheromonen

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Abstract

With the aim of optimizing the trapping ofHyphantria cunea (Drury) males through pheromones, the activity of various traps, doses of pheromone components and dispensers was investigated. The best degree of activity was obtained by funnel traps (Uni-traps) with high capture ability and satisfactory representation of the flight curve when the population of the moth is high. On the contrary, the sticky traps gave good results in low density population. Comparing the activity ofH. cunea to the pheromones, (3Z, 6Z, 9S 10R)-cis-9,10-epoxy-1,3,6-heneicosatriene (or TEP), (3Z, 6Z, 9S 10R)-cis-9,10-epoxy-3,6-heneicosatriene (or DEP) and linolenic aldehyde (or TAL), the results obtained showed different responses according to the areas considered. Blend 1∶1∶1 of DEP:TAL:TEP revealed better results in the Venezia area (north-east Italy), while the activity of the Japanese dispenser (2∶30∶1) was highest in the Novara area (north-west Italy); on the contrary no significant differences were noted in Bergamo, the middle area considered. These results denote that the Italian population ofH. cunea could be made up of different strains, introduced from different geographical areas, with the presence of pheromone dialects.

Zusammenfassung

Zum Zweck der Optimierung des Fallenfangs vonH. cunea-Männchen mit Hilfe von Pheromonen wurde die Wirkung verschiedener Fallentypen und Pheromonformen im nördlichen Italien untersucht. Die besten Ergebnisse zeigten Trichterfallen (uni traps) mit hohen Fangleistungen und genügend genauer Repräsentation der Flugkurve bei hoher Populationsdichte des Bärenspinners. Andererseits erbrachten die Leimfallen gute Ergebnisse bei geringerer Populationsdichte. Im Vergleich von

3 Pheromonen: (3Z, 6Z, 9S, 10R)-cis-9,10-epoxy-1,3,6-heneicosatriene (oder TEP), — (3Z, 6Z, 9S, 10R)-cis-9,10-epoxy-3,6-heneicosatriene (oder DEP) — sowie Linolenaldehyd (oder TAL) führten diese je nach dem Areal zu unterschiedlichen Fangergebnissen. Blend 1∶1∶1 von DEP:TAL:TEP erbrachten bessere Ergebnisse im Gebiet von Venezia (NO-Italien), während der Japanische Dispenser (2∶10∶1) besser im Gebiet von Novara (NW-Italien) wirkte- Keine signifikanten Unteraschiede zwischen beiden ergaben sich im Gebiet von Bergamo. Diese Ergebnisse weisen darauf hin, daß die norditalienischen Populationen vonH. cunea in verschiedene Stämme gegliedert werden können, die von verschiedenen geographischen Gebieten mit jeweils spezifischen Pheromonverhältnissen stammen.

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Author notes

  1. P. Ferrario &  M. Binda

    Present address: Osservatorio per le Malattie delle Piante, via Fara 20, I-20 100, Milano

Authors and Affiliations

  1. Institute of Agricultural Entomology, University of Milan, Italy

    P. Trematerra,  P. Ferrario &  M. Binda

  2. Plant Protection Quarantine, Lombardy Region, Milan, Italy

    P. Trematerra,  P. Ferrario &  M. Binda

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  1. P. Trematerra
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  2. P. Ferrario
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  3. M. Binda
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Trematerra, P., Ferrario, P. & Binda, M. Studies on trapping of Fall Webworm moth,Hyphantria cunea (Drury) (Lepid., Arctiidae). Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 66, 51–56 (1993). https://doi.org/10.1007/BF01903172

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