Journal of Economic Entomology (2015) 108, 1422-1428
Christos G. Athanassiou, M. Mahbub Hasan, Thomas W. Phillips, M. Jamie Aikins and James E. Throne (2015)
Efficacy of methyl bromide for control of different life stages of stored-product psocids
Journal of Economic Entomology 108 (3), 1422-1428
Abstract: The psocid species Liposcelis paeta Pearman, Liposcelis entomophila (Enderlein), Liposcelis decolor (Pearman), Liposcelis bostrychophila Badonnel (Psocoptera: Liposcelididae), and Lepinotus reticulatus Enderlein (Psocoptera: Trogiidae) were evaluated in laboratory bioassays to determine their susceptibility to six concentrations of methyl bromide (0.027, 0.113, 0.280, 0.393, 0.452, and 0.616 g/m3) after 48 h of exposure at 27.5°C. The life stages that were evaluated were adults (for all species), nymphs (for all species except Lep. reticulatus), and eggs (for L. entomophila, L. decolor, and L. bostrychophila). Adults and nymphs were very susceptible, and complete mortality was recorded at concentrations between 0.027 and 0.280 g/m3. In contrast, eggs were by far more tolerant than adults and nymphs for all species tested. At 0.027 g/m3, mortality did not exceed 53%, while survival was high even at 0.113 g/m3. Complete (100%) egg mortality was recorded at 0.393 g/m3 for L. decolor and at 0.452 g/m3 for L. entomophila and L. bostrychophila; concentrations estimated to give 99% mortality for eggs of these three species were 0.710, 1.044, and 0.891 g/m3, respectively. These results show that stored-product psocids are susceptible to methyl bromide, but concentrations of >0.452 g/m3 should be used to control all life stages.
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Link to article at publishers website
Database assignments for author(s): Thomas W. Phillips, James E. Throne, Md. Mahbub Hasan
Research topic(s) for pests/diseases/weeds:
control - general
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Liposcelis paeta | ||||
| Liposcelis bostrychophila | ||||
| Liposcelis entomophila | ||||
| Liposcelis decolor | ||||
| Lepinotus reticulatus |
