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首页> 美国卫生研究院文献>Proceedings of the Royal Society B: Biological Sciences >Reproductive control via eviction (but not the threat of eviction) in banded mongooses
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Reproductive control via eviction (but not the threat of eviction) in banded mongooses

机译：带状猫鼬通过驱逐（但不是驱逐的威胁）进行生殖控制

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Considerable research has focused on understanding variation in reproductive skew in cooperative animal societies, but the pace of theoretical development has far outstripped empirical testing of the models. One major class of model suggests that dominant individuals can use the threat of eviction to deter subordinate reproduction (the ‘restraint’ model), but this idea remains untested. Here, we use long-term behavioural and genetic data to test the assumptions of the restraint model in banded mongooses (Mungos mungo), a species in which subordinates breed regularly and evictions are common. We found that dominant females suffer reproductive costs when subordinates breed, and respond to these costs by evicting breeding subordinates from the group en masse, in agreement with the assumptions of the model. We found no evidence, however, that subordinate females exercise reproductive restraint to avoid being evicted in the first place. This means that the pattern of reproduction is not the result of a reproductive ‘transaction’ to avert the threat of eviction. We present a simple game theoretical analysis that suggests that eviction threats may often be ineffective to induce pre-emptive restraint among multiple subordinates and predicts that threats of eviction (or departure) will be much more effective in dyadic relationships and linear hierarchies. Transactional models may be more applicable to these systems. Greater focus on testing the assumptions rather than predictions of skew models can lead to a better understanding of how animals control each other's reproduction, and the extent to which behaviour is shaped by overt acts versus hidden threats.
机译：大量的研究集中在了解合作动物社会中生殖偏斜的变化，但是理论发展的步伐远远超过了对模型的实证检验。一类主要的模型表明，支配性个人可以利用驱逐的威胁来阻止从属繁殖（“约束”模型），但是这一想法尚未得到检验。在这里，我们使用长期的行为和遗传数据来测试带状猫鼬（Mungos mungo）中约束模型的假设，该物种是下属经常繁殖且逐出的物种。我们发现，当下属繁殖时，优势雌性会遭受生殖成本，并且通过与模型的假设一致，通过将群体中的下属逐出集体来应对这些成本。但是，我们没有发现任何证据表明下属的女性为了避免被赶出家门而行使生殖约束。这意味着繁殖方式不是为避免迁离威胁而进行的生殖“交易”的结果。我们提出了一个简单的博弈论分析，表明驱逐威胁通常可能无法有效地导致多个下属之间的先发制人约束，并预测驱逐（或离开）威胁在二元关系和线性层次结构中将更加有效。事务处理模型可能更适用于这些系统。更多地关注检验假设而不是偏斜模型的预测可以使人们更好地了解动物如何控制彼此的繁殖，以及行为由显性行为对隐性威胁形成的程度。

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