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Title: Egg-Cracking Vibration as a Cue for Stink Bug Siblings to Synchronize Hatching
Authors: Endo, Jun
Takanashi, Takuma
Mukai, Hiromi
Numata, Hideharu
Author's alias: 遠藤, 淳
高梨, 琢磨
向井, 裕美
沼田, 英治
Keywords: synchronization cue
social information use
playback experiment
sibling group
egg cannibalism
brown marmorated stink bug
Halyomorpha halys
Issue Date: 7-Jan-2019
Publisher: Elsevier BV
Journal title: Current Biology
Volume: 29
Issue: 1
Start page: 143
End page: 148.e2
Abstract: Egg clutches of many animals hatch synchronously due to parental control [1, 2] or environmental stimulation [3, 4]. In contrast, in some animals, embryos actively synchronize their hatching timing with their siblings to facilitate adaptive behavior in sibling groups, such as mass migration [5, 6]. These embryos require synchronization cues that are detectable from eggs and indicative of when the siblings hatch, such as pre-hatching vocalizations in birds and crocodiles [7, 8]. Previous studies, using methods including artificial presentation of non-specific mechanical stimuli, demonstrated that vibrations or other mechanical forces caused by sibling movements are cues used by some turtles and insects [9, 10, 11, 12, 13]. However, there is no evidence about which movements of tiny embryos or hatchlings, among multiple possibilities, can generate mechanical cues actually detectable through eggs. Here, we show that embryos of the brown marmorated stink bug, Halyomorpha halys, synchronize hatching by responding to single pulsed vibrations generated when siblings crack open their eggshells. An egg-cracking vibration seems to be transmitted to distant eggs within a clutch while still maintaining its function as a cue, thus leading to the highly synchronized hatching pattern previously reported [14]. In this species, it is possible that embryos attempt to hatch with short lags after earlier-hatched siblings to avoid egg cannibalism by them [14]. The present study illustrates the diversity of social-information use by animal embryos for success in the sibling group.
Description: カメムシの卵が一斉に孵化する巧妙なメカニズムを発見 --ある卵が割れた振動を合図にきょうだいの卵が孵化する--. 京都大学プレスリリース. 2018-12-28.
Rights: © <2019>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
The full-text file will be made open to the public on 07 January 2020 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
URI: http://hdl.handle.net/2433/235960
DOI(Published Version): 10.1016/j.cub.2018.11.024
PubMed ID: 30595517
Related Link: http://www.kyoto-u.ac.jp/ja/research/research_results/2018/181228_1.html
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