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Appropriate Mesh Size of Insect Screen for the Exclusion of the Cigarette Beetle, Lasioderma serricorne (F.)

Toshihiro Imai

Toshihiro Imai

Leaf Tobacco Research Center, Japan Tobacco Inc.Oyama, Japan
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Imai, Toshihiro
  
20 avr. 2021
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Publié en ligne: 20 avr. 2021
Pages: 25 - 28
Reçu: 23 oct. 2020
Accepté: 25 janv. 2021
DOI: https://doi.org/10.2478/cttr-2021-0003
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© 2021 Toshihiro Imai, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Figure 1

Screening meshes in comparison with adult cigarette beetles (left and center images). Test apparatus (right). Polystyrene containers (12 cm ø × 8 cm) with 10-cm holes in the bottom, between which polypropylene meshes with 0.66 mm, 0.84 mm, or 1.0 mm openings were placed, were stacked on top of each other, and the lid of the top container was closed. Approximately 200 unsexed adults were released in the bottom compartment.
Screening meshes in comparison with adult cigarette beetles (left and center images). Test apparatus (right). Polystyrene containers (12 cm ø × 8 cm) with 10-cm holes in the bottom, between which polypropylene meshes with 0.66 mm, 0.84 mm, or 1.0 mm openings were placed, were stacked on top of each other, and the lid of the top container was closed. Approximately 200 unsexed adults were released in the bottom compartment.

Figure 2

Distribution of the widths of prothoraxes of the laboratory-reared cigarette beetles that passed through #24 (open bar), #20 (dotted bar), and #18 (filled bar) meshes.
Distribution of the widths of prothoraxes of the laboratory-reared cigarette beetles that passed through #24 (open bar), #20 (dotted bar), and #18 (filled bar) meshes.

Figure 3

Frequency distribution of the widths of the prothoraxes of the wild cigarette beetles captured in pheromone traps around three tobacco factories in Japan during July and August 2017. Bars represent the composition ratio (left scale), and line represents the cumulative frequency (right scale).
Frequency distribution of the widths of the prothoraxes of the wild cigarette beetles captured in pheromone traps around three tobacco factories in Japan during July and August 2017. Bars represent the composition ratio (left scale), and line represents the cumulative frequency (right scale).
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Sujets de la revue:
Intérêt général, Sciences de la vie, Sciences de la vie, autres, Physique, Physique, autres
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