Behavioural dynamics of biparental care in the dung beetle Onthophagus taurus
Behavioural dynamics of biparental care in the dung beetle Onthophagus taurus
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DOI：
10.1006/anbe.2002.3036
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发表时间：
2002-07-01
期刊：
影响因子：
2.5
通讯作者：
Simmons, LW
中科院分区：
文献类型：
--
作者：
Hunt, J;Simmons, LW
在二型蜣螂Onthophagus taurus主要男性提供援助期间的后代供应。我们研究了双亲护理的行为动力学，以直接量化男性和女性如何分配时间给父母和非父母行为，并确定父母是否调整其投资水平相对于他们的合作伙伴的贡献。女性比男性分配更多的时间预算的父母行为。产卵后，女性分配给父母的行为的时间比例增加，而男性减少。男性的亲子关系保证行为与男性和女性的父母行为呈负相关。理论模型预测，一对合作伙伴的成员提供的投资应该是负相关的，一个父母的任何不足都应该由另一个父母部分补偿。在没有男性的情况下，没有帮助的女性分配更多的时间来照顾父母，并进行更多的父母行为。然而，补偿是不完整的，因为无人协助的女性比对父母的行为少，导致显着较轻的育雏群众（鸡蛋及其相关的粪便供应）。男性进行更多的父母的行为时，与小的女性，小女性比大女性。与预测相反，合作伙伴中男性和女性提供的投资呈正相关。男性协调其与女性的父母的行为，而不是独立行事。由于亲鸟行为与亲鸟体重直接相关，因此观察到的亲鸟相互作用将对该物种的适应性产生重要影响。(C)2002年，动物行为研究协会。由爱思唯尔科技有限公司出版。保留所有权利。
In the dimorphic dung beetle Onthophagus taurus major males provide assistance during offspring provisioning. We examined the behavioural dynamics of biparental care to quantify directly how males and females allocate time to parental and nonparental behaviours and to determine whether parents adjust their level of investment relative to their partner's contribution. Females allocated more of their time budget to parental behaviours than males. The proportion of time females allocated to parental behaviours increased after oviposition while that of a male decreased. Male paternity assurance behaviours were negatively associated with male and female parental behaviours. Theoretical models predict that the investment provided by the members of a cooperative pair should be negatively correlated and that any shortfall of one parent should be partially compensated for by the other. In-the absence of a male, unassisted females allocated more time to parental care, and performed more parental behaviours. However, compensation was incomplete as unassisted females performed fewer parental behaviours than pairs, resulting in significantly lighter brood masses (the egg and its associated dung supply). Males performed more parental behaviours when paired with small females, and small females more than large females. Contrary to prediction, the investments provided by males and females in a cooperative pair were positively correlated. Males coordinated their parental behaviours with the females rather than acting independently. Since parental behaviours were directly related to the weight of brood masses, the observed parental interactions will have important fitness consequences in this species., (C) 2002 The Association for the Study of Animal Behaviour. Published by Elsevier Science Ltd. All rights reserved.