Using social parasitism to test reproductive skew models in a primitively eusocial wasp.
Using social parasitism to test reproductive skew models in a primitively eusocial wasp.
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DOI：
10.1098/rspb.2014.1206
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发表时间：
2014-08-22
期刊：
影响因子：
--
通讯作者：
Field J
中科院分区：
文献类型：
--
作者：
Green JP;Cant MA;Field J
显着的变化存在于繁殖的分布（偏斜）之间的合作繁殖组的成员，无论是在物种内和物种之间。生殖偏斜理论为理解这种变异提供了一个重要的框架。在具有竞争性的真社会性的海蛛群中，有两种模型经常被测试：特许权模型，它假设由一个占主导地位的个体完全控制繁殖，以及拔河模型，它假设群体成员之间对繁殖的持续竞争。目前的数据对这两种模式都没有提供什么支持，但个人检测遗传相关性的能力的不确定性和识别赋予竞争能力的特征的困难意味着让步与拔河的相对重要性仍然没有得到解决。在这里，我们认为，利用社会寄生产生有意义的变化，在关键的社会变量是一个宝贵的机会，探索机制的基础上生殖偏斜的社会Hyplittera。我们在论文《黄蜂Polistes dominulus》中对让步和拔河模型进行了直接测试，方法是利用同类社会寄生虫取代主导地位后发生的相关性和权力结构的显着变化。寄生和未寄生的殖民地的偏斜的比较是一致的拔河在P. dominulus组内的繁殖，但没有提供证据的繁殖让步。
Remarkable variation exists in the distribution of reproduction (skew) among members of cooperatively breeding groups, both within and between species. Reproductive skew theory has provided an important framework for understanding this variation. In the primitively eusocial Hymenoptera, two models have been routinely tested: concessions models, which assume complete control of reproduction by a dominant individual, and tug-of-war models, which assume on-going competition among group members over reproduction. Current data provide little support for either model, but uncertainty about the ability of individuals to detect genetic relatedness and difficulties in identifying traits conferring competitive ability mean that the relative importance of concessions versus tug-of-war remains unresolved. Here, we suggest that the use of social parasitism to generate meaningful variation in key social variables represents a valuable opportunity to explore the mechanisms underpinning reproductive skew within the social Hymenoptera. We present a direct test of concessions and tug-of-war models in the paper wasp Polistes dominulus by exploiting pronounced changes in relatedness and power structures that occur following replacement of the dominant by a congeneric social parasite. Comparisons of skew in parasitized and unparasitized colonies are consistent with a tug-of-war over reproduction within P. dominulus groups, but provide no evidence for reproductive concessions.
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影响因子：
2.4
作者：
Heg, D;Bergm端ller, R;Taborsky, M
通讯作者：
Taborsky, M
DOI：
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发表时间：
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