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ナガヤ ナオヒサ
NAGAYA NAOHISA
永谷 直久 所属 京都産業大学 情報理工学部 情報理工学科 職種 准教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2019/09 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | Arousal from Tonic Immobility by Vibration Stimulus |
| 執筆形態 | その他 |
| 掲載誌名 | Behavior Genetics |
| 巻・号・頁 | 49(5),pp.478-483 |
| 著者・共著者 | Takahisa Miyatake,Kentarou Matsumura,Ryota Kitayama,Keiichi Otsuki,Ji Yuhao,Ryusuke Fujisawa,Naohisa Nagaya |
| 概要 | © 2019, Springer Science+Business Media, LLC, part of Springer Nature. Tonic immobility (TI) is an effective anti-predator strategy. However, long immobility status on the ground increases the risk of being eaten by predators, and thus insects must rouse themselves when appropriate stimulation is provided. Here, the strength of vibration causing arousal from the state of TI was examined in strains artificially selected for longer duration of TI (L-strains: long sleeper) in a beetle. We provided different strengths of vibration stimuli to the long sleepers in Tribolium castaneum. Although immobilized beetles were never awakened by the stimuli from 0.01 to 0.12 mm in amplitude, almost of the beetles were aroused from immobilized status by the stimulus at 0.21 mm. There was a difference in sensitivity of individuals when the stimuli of 0.14 mm and 0.18 mm were provided. F2 individuals were also bred by crossing experiments of the strains selected for shorter and longer duration of TI. The arousal sensitivity to vibration was well separated in the F2 individuals. A positive relationship was observed between the duration of TI and the vibration amplitude, suggesting that immobilized beetles are difficult to arouse from a deep sleep, while light sleepers are easily aroused by even small vibrations. The results indicate a genetic basis for sensitivity to arousal from TI. |
| DOI | 10.1007/s10519-019-09962-x |
| ISSN | 0001-8244/1573-3297 |
| PMID | 31227945 |