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TRAP DESIGNS FOR MONITORING EMERGENCE OF FRANKLINIELLA BISPINOSA (MORGAN) (THYSANOPTERA: THRIPIDAE) FROM SOIL IN CITRUS GROVES

Published online by Cambridge University Press:  31 May 2012

C.C. Childers
C.C. Childers
Affiliation:
Citrus Research and Education Center, University of Florida, IFAS, 700 Experiment Station Road, Lake Alfred, Florida, USA 33850
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Abstract

Three emergence trap designs were evaluated for effectiveness in collecting adult Frankliniella bispinosa (Morgan) (Thysanoptera: Thripidae) from beneath and between citrus trees in Florida. Trap A [a wooden-frame 30- by 30-cm (= 900 cm2) square trap with removable Plexiglas® lid coated with Tangle-Trap® adhesive] was effective in trapping F. bispinosa adults whereas trap B [a polyvinylchloride (PVC) round trap with a centered 3.7-mL capacity shell vial] was ineffective. Trap A was as effective in collecting emerging F. bispinosa adults as trap C [a PVC round trap with a 30-cm-diameter (= 706.5 cm2) removable adhesive-coated Plexiglas lid]. Comparative costs for trap construction, maintenance, and insect counting are all higher for trap A compared with trap C. Trap placement beneath citrus trees 15 cm from the trunk or just inside the dripline of the canopy provided similar thrips catches in two citrus grove sites. Both interior and dripline trap positions beneath "navel" orange trees had significantly higher numbers of F. bispinosa than did traps exposed within rows between these trees.

Résumé

Trois modèles de pièges d’émergence ont été éprouvés et leur efficacité à capturer des Frankliniella bispinosa (Morgan) (Thysanoptera : Thripidae) sous les arbres et entre les arbres a été évaluée dans des vergers d’agrumes de Floride. Le modèle A, un piège carré [cadre de bois de 30 × 30 cm (= 900 cm2) à couvercle amovible de Plexiglas® enduit de colle Tangle-Trap®] s’est avéré efficace pour capturer des adultes, mais le modèle B [un piège rond de chlorure de polyvinyl (PVC) comportant un tube de verre centré de 3,7 mL de capacité] n’était pas efficace. Le modèle A a été aussi efficace pour capturer des adultes à l’émergence que le modèle C [un piège rond de PVC à couvercle amovible de Plexiglas enduit de colle de 30 cm de diamètre]. Les coûts reliés à la construction et à l’entretien des pièges et au dénombrement des insectes sont tous plus élevés dans le cas du modèle A que dans celui du modèle C. Des pièges placés sous les arbres à 15 cm du tronc ou juste à l’intérieur de la ligne d’égouttement du feuillage ont donné des récoltes semblables en deux vergers d’agrumes. Les pièges placés dans ces deux positions sous des orangers "navel" ont récolté des nombres significativement plus élevés de thrips que les pièges installés en rangées entre les arbres.

[Traduit par la rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 125 , Issue 3 , June 1993 , pp. 449 - 456
Copyright
Copyright © Entomological Society of Canada 1993

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References

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