How much does it cost to look like a pig in a wild boar group?
How much does it cost to look like a pig in a wild boar group?
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DOI：
10.1016/j.beproc.2017.03.001
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发表时间：
2017-05-01
影响因子：
1.3
通讯作者：
Mori, Emiliano
中科院分区：
文献类型：
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作者：
Battocchio, Daniele;Iacolina, Laura;Mori, Emiliano
众所周知，家养物种和野生物种之间的杂交广泛存在，据报道这是当前生物多样性危机的主要原因之一。尽管如此，人们对杂交动物的行为生态学，特别是与它们的社会行为有关的关注却很少。我们进行了一项相机陷阱研究，以评估野猪的表型异常着色（即可能与家猪渐渗）是否影响野猪社会群体的等级结构。在 531 个野猪视频中，有 32 个检测到了色彩异常野猪 (CAW)。在大多数视频 (75%) 中，CAW 是该群体中最新的，与他们的年龄层和群体构成无关。 31.25% 的视频中记录了野生型同伴的攻击行为；相比之下，野生型个体之间没有观察到攻击行为。与野生型群体相比，缺乏伪装可能会使 CAW 及其群体面临更高的被捕食风险。个体局部适应能力的丧失可能会增加被狼捕食或被猎人发现的风险，从而导致整个社会群体的适应不良。 (C) 2017 Elsevier B.V. 保留所有权利。
Hybridization between domestic and wild species is known to widely occur and it is reported to be one of the major causes of the current biodiversity crisis. Despite this, poor attention has been deserved to the behavioural ecology of hybrids, in particular in relation to their social behaviour. We carried out a camera trap study to assess whether phenotypically anomalous colouration in wild boar, i.e. potentially introgressed with domestic pigs, affected the hierarchical structure of wild boar social groups. Chromatically anomalous wild boars (CAWs) were detected in 32 out of 531 wild boar videos. In most videos (75%) CAWs were the latest of the group, independently from their age class and group composition. Aggressions by their wild type fellows were recorded in 31.25% videos; by contrast, no aggression among wild type individuals was observed. The lack of camouflage may expose CAWs, and thus their group, to a higher predation risk, compared to wild type groups. This individual loss of local adaptation may increase predation risk by the wolf or detection by hunters, being maladaptive for the whole social group. (C) 2017 Elsevier B.V. All rights reserved.