Taming of the skew:: transactional models fail to predict reproductive partitioning in the paper wasp Polistes dominulus
Taming of the skew:: transactional models fail to predict reproductive partitioning in the paper wasp Polistes dominulus
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DOI：
10.1016/j.anbehav.2005.09.005
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发表时间：
2006-04-01
期刊：
影响因子：
2.5
通讯作者：
Starks, PT
中科院分区：
文献类型：
--
作者：
Liebert, AE;Starks, PT
雌性Polistes纸蜂可以单独或合作群体开始殖民。繁殖在群体中的分布往往是不平等的，甚至到了完全由群体中占优势的成员垄断繁殖的地步。生殖偏斜的transmittance模型预测生殖分区的程度，假设占主导地位的控制组成员，并会产生一定比例的繁殖到下属作为一种激励，以保持和平的组。使用的人口，遗传和形态数据的组合从人口的R dominulus，我们测试预测的“经典”两人偏斜模型，以及更复杂的“N人”模型。这是迄今为止对该物种偏斜的最全面的研究，结果通常不支持事务模型。我们没有发现二分体的偏斜和相关性之间的关系，并观察到完全偏斜不相关的群体，尽管预测这一人群，这样的群体不应该发生。与N人模型的预测相反，群体规模往往随着相关性的增加而增加。虽然我们确实发现了预测的正相关性组的大小和倾斜的非亲属组，这种关系是微弱的。预测的最小和最大逗留激励之间的冲突区域往往跨越整个可能的范围内的生殖偏斜，这表明一个“拔河”的情况下可能是更合适的比一个交易框架内的殖民地动态的理解。总的来说，我们的研究结果表明，交易偏斜模型几乎没有预测能力，因此不太可能产生进一步的洞察Polistes黄蜂社会。(c)2006年动物行为研究协会由爱思唯尔有限公司出版。版权所有。
Female Polistes paper wasps can initiate colonies either solitarily or in cooperative groups. Reproduction is often distributed unequally in groups, even to the point of complete monopolization of breeding by the dominant group member. Transactional models of reproductive skew predict the degree of reproductive partitioning, assuming that the dominant controls group membership and will yield a proportion of reproduction to a subordinate as an incentive to stay peacefully in the group. Using a combination of demographic, genetic and morphological data from a population of R dominulus, we test predictions of 'classical' two-person skew models as well as more complex 'N-person' models. This is the most comprehensive study of skew in this species to date, and the results generally do not support transactional models. We found no relationship between skew and relatedness for dyads, and complete skew was observed in unrelated groups despite the prediction for this population that such groups should not occur. In contrast to N-person model predictions, group size tended to increase with relatedness. Although we did find the predicted positive correlation between group size and skew for groups of nonrelatives, this relationship was weak. The zone of conflict between the predicted minimum and maximum staying incentives often spans the entire possible range of reproductive skew, suggesting that a 'tug-of-war' scenario may be more appropriate than a transactional framework for understanding within-colony dynamics. Overall, our results demonstrate that transactional skew models have little predictive power and are therefore unlikely to yield further insight into Polistes wasp societies. (c) 2006 The Association for the Study of Animal Behaviour Published by Elsevier Ltd. All rights reserved.