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タイトル: Spectrum-specific UV egg damage and dispersal responses in the phytoseiid predatory mite Neoseiulus californicus (Acari: Phytoseiidae).
著者: Tachi, Fuyuki
Osakabe, Masahiro  KAKEN_id  orcid https://orcid.org/0000-0002-2246-3431 (unconfirmed)
著者名の別形: 刑部, 正博
キーワード: UV avoidance
UV-B
foraging behavior
Phytoseiidae
Acari
発行日: Jun-2014
出版者: Oxford University Press
誌名: Environmental entomology
巻: 43
号: 3
開始ページ: 787
終了ページ: 794
抄録: Solar ultraviolet-B (UVB) radiation is deleterious to plant-dwelling mites. Neoseiulus californicus (McGregor) is a predominant predator of agriculturally important pest species of spider mite. However, phytoseiid mites are more vulnerable to UVB radiation than spider mites. Thus, the UVB radiation may influence decision making in foraging phytoseiid mites whether disperse or not. We tested the difference in impact and behavioral response among wavelengths of monochromatic UV radiation using a spectroscopic light source in N. californicus in the laboratory. We also examined whether the behavioral responses of N. californicus females to UV radiation varied based on the presence of prey (Tetranychus urticae Koch) eggs and residues (webs and excreta of T. urticae: foraging cue). The impact of UV radiation on the N. californicus egg hatchability varied drastically between wavelengths of ≤300 nm (0%) and ≥310 nm (100%). The N. californicus females escaped from UV radiation more quickly when they were irradiated with UV at shorter wavelength. Presence of T. urticae eggs had no effects arresting the escape of phytoseiid mites. In contrast, prey residues (including eggs) markedly detained N. californicus females from escaping under UV irradiation at ≥310 nm. However, N. californicus females quickly escaped when irradiated with UV at harmful 300 nm wavelength, regardless of prey cues. This indicates that the eyeless phytoseiid mite is capable of perceiving UV radiation, and whether escape or not is determined on the basis of harmful/harmless UV wavelength and presence/absence of foraging cues.
著作権等: © 2014 Entomological Society of America
This Article is distributed under terms of the CC BY-NC license.
URI: http://hdl.handle.net/2433/199851
DOI(出版社版): 10.1603/EN13336
PubMed ID: 24690314
出現コレクション:学術雑誌掲載論文等

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