Cues of maternal condition influence offspring selfishness.
Cues of maternal condition influence offspring selfishness.
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DOI：
10.1371/journal.pone.0087214
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Kölliker M
中科院分区：
文献类型：
--
作者：
Wong JW;Lucas C;Kölliker M
亲子沟通的进化主要是从父母对传达子女状况信息的乞求信号做出反应的角度来研究的。父母应该对乞讨做出回应，因为他们对后代的投资获得了不同的健康回报，条件不同。出于类似的原因，后代应该根据父母状况的暗示/信号来调整他们的行为：条件不同的父母支付不同的护理费用，因此应该提供不同数量的食物。在这项研究中，我们在欧洲耳垢(Forfrula Aurularia)身上进行了实验测试，以确定母亲的状况是否会影响兄弟姐妹相食方面的后代行为。我们通过提供不同数量的食物来实验控制雌性的状况，保持若虫的状况不变，允许雌性长期接触化学母体线索，量化若虫的存活率(因食人而死亡)，并提取和分析雌性的角质碳氢化合物(CHC)。若虫存活受母体条件的化学线索的显著影响，这种影响依赖于繁殖的时机。母体状况较差的线索提高了早期若虫的存活率，但降低了后期若虫的存活率，反之亦然。此外，雌性条件影响其CHC谱的数量组成，进而预测若虫的生存模式。因此，早熟幼虫的后代对母体状况的化学线索很敏感，而早熟和晚熟若虫对相同的化学线索表现出相反的反应。结合以前关于母亲对条件依赖的若虫化学线索的敏感性的证据，我们的研究表明，早期母亲和她们的后代之间关于条件的相互信息交换依赖于上下文，可能是由角质层碳氢化合物介导的。
The evolution of parent-offspring communication was mostly studied from the perspective of parents responding to begging signals conveying information about offspring condition. Parents should respond to begging because of the differential fitness returns obtained from their investment in offspring that differ in condition. For analogous reasons, offspring should adjust their behavior to cues/signals of parental condition: parents that differ in condition pay differential costs of care and, hence, should provide different amounts of food. In this study, we experimentally tested in the European earwig (Forficula auricularia) if cues of maternal condition affect offspring behavior in terms of sibling cannibalism. We experimentally manipulated female condition by providing them with different amounts of food, kept nymph condition constant, allowed for nymph exposure to chemical maternal cues over extended time, quantified nymph survival (deaths being due to cannibalism) and extracted and analyzed the females’ cuticular hydrocarbons (CHC). Nymph survival was significantly affected by chemical cues of maternal condition, and this effect depended on the timing of breeding. Cues of poor maternal condition enhanced nymph survival in early broods, but reduced nymph survival in late broods, and vice versa for cues of good condition. Furthermore, female condition affected the quantitative composition of their CHC profile which in turn predicted nymph survival patterns. Thus, earwig offspring are sensitive to chemical cues of maternal condition and nymphs from early and late broods show opposite reactions to the same chemical cues. Together with former evidence on maternal sensitivities to condition-dependent nymph chemical cues, our study shows context-dependent reciprocal information exchange about condition between earwig mothers and their offspring, potentially mediated by cuticular hydrocarbons.
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影响因子：
2.5
作者：
Dobler, Ralph;Koelliker, Mathias
通讯作者：
Koelliker, Mathias
DOI：
10.1098/rspb.2006.3546
发表时间：
2006-08-22
影响因子：
4.7
作者：
Bize, Pierre;Piault, Romain;Heeb, Philipp
通讯作者：
Heeb, Philipp
DOI：
10.1073/pnas.1107758108
发表时间：
2011-10-11
影响因子：
11.1
作者：
Biedermann, Peter H. W.;Taborsky, Michael
通讯作者：
Taborsky, Michael
DOI：
10.1098/rstb.2000.0719
发表时间：
2000-11-29
期刊：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
影响因子：
--
作者：
Godfray, HCJ;Johnstone, RA
通讯作者：
Johnstone, RA
影响因子：
2.3
作者：
Kolliker, Mathias
通讯作者：
Kolliker, Mathias