Benefits and costs of earwig (Forficula auricularia) family life
Benefits and costs of earwig (Forficula auricularia) family life
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DOI：
10.1007/s00265-007-0381-7
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发表时间：
2007-07-01
影响因子：
2.3
通讯作者：
Kolliker, Mathias
中科院分区：
文献类型：
--
作者：
Kolliker, Mathias
在特定的生态条件下，父母照顾和家庭群体形成的演化主要取决于后代的生存利益和父母的生育成本。调查的功能意义的照顾昆虫物种表现出兼性的父母照顾已经相对罕见，但可能是特别感兴趣的更好地了解利益和成本的时间表在早期进化阶段。在这项研究中，方面的利益和成本的照顾，解决了在亚社会欧洲earwig（Forficula auricularia; Dermaptera：Forficulidae）通过操纵存在的抚育母亲和育雏大小在一个完全交叉的实验设计。幼虫生长在育雏往往由他们的母亲或减少的大小表现出较高的生存概率比幼虫生长在无人照顾或大型育雏，如预测，如果产妇护理是有益的，并塑造了数量和质量之间的权衡后代。食物消费和发育时间的模式分析进一步表明，产妇出席的好处是介导的母亲提供的食物，而质量-数量的权衡似乎是由兄弟姐妹的竞争。此外，照料母亲推迟了第二窝的生产，这表明在终身生育方面的潜在护理成本。这项研究实验表明，在欧洲earwig产妇护理和家庭群体的形成的好处和潜在的成本。需要进行更详细的行为实验，以充分了解家庭成员之间的行为互动如何介导这些生殖结果。
The evolution of parental care and family group formation critically depends on offspring survival benefits and parental fecundity costs of care under given ecological conditions. Investigations of the functional significance of care in insect species that exhibit facultative parental care have been relatively rare but may be of particular interest for better understanding of benefit and cost schedules at an early evolutionary stage. In this study, aspects of benefits and costs of care were addressed in the sub-social European earwig (Forficula auricularia; Dermaptera: Forficulidae) by manipulating the presence of tending mothers and brood size in a fully crossed experimental design. Larvae growing in broods tended by their mother or of reduced size showed a higher survival probability than larvae growing in untended or large broods, as predicted if maternal care is beneficial and shaped by a trade-off between number and quality of offspring. Analysis of patterns of food consumption and developmental time further suggested that the benefit of maternal attendance is mediated by the maternal provisioning of food, while the quality-quantity trade-off seemed to be driven by sibling rivalry. Further, tending mothers delayed the production of a second clutch, indicating a potential cost of care in terms of lifetime fecundity. This study experimentally shows benefits and potential costs of maternal care and family group formation in the European earwig. More detailed behavioural experiments will be required to fully understand how behavioural interactions among family members mediate these reproductive outcomes.