Mental gland secretions as a social cue in gopher tortoises (Gopherus polyphemus): tortoise presence stimulates and maintains social behaviour with chemical cues

IF 1.1 4区 生物学 Q4 BEHAVIORAL SCIENCES acta ethologica Pub Date : 2020-10-15 DOI:10.1007/s10211-020-00353-8
Meghan D. Kelley, Mary T. Mendonça
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引用次数: 3

Abstract

Multimodal signalling reinforces specific messages in communication. In gopher tortoises, similar to other reptilian species, visualization of conspecific and chemical exudates from the skin may serve as a multimodal display advertising information about conspecific species, sex, or individual qualities, but this has not been fully elucidated. For gopher tortoises, one such possible source of chemical cues could be secretions from seasonally enlarged mental glands (MG). Here, we used both sexes of gopher tortoises in a paired choice presentation of MG secretions vs. distilled (DI) water on resin tortoise models to assess visual presence with tortoise-specific secretions. We examined behaviours to treatments to examine if MG secretions are recognizable olfactory cues and if visual cues alone are sufficient to maintain social interactions using a simple visual presentation vs. a complex visual and olfactory presentation. Tortoises of both sexes spent more total time (p < 0.001) and performed a greater number of behaviours (p < 0.001) towards the MG-treated model, relative to the neutral control (DI-treated model), suggesting that olfactory MG secretions are also required, along with visual presence of a tortoise, to engage in social behaviours. Our results are among the first for this species suggesting that pheromone usage may drive social interactions in social behaviours.

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精神腺分泌物作为地鼠龟的社交线索:乌龟的存在通过化学线索刺激和维持社交行为
多模态信号强化了通信中的特定信息。在地鼠龟中,与其他爬行动物物种类似,皮肤上的同种和化学渗出物的可视化可能作为一种多模式的展示广告信息,关于同种、性别或个体品质,但这还没有完全阐明。对于地鼠龟来说,一种可能的化学线索来源可能是季节性增大的精神腺(MG)的分泌物。在这里,我们使用两性地鼠龟在树脂龟模型上进行MG分泌物和蒸馏水(DI)的配对选择,以评估龟特异性分泌物的视觉存在。我们检查了治疗行为,以检查MG分泌物是否是可识别的嗅觉线索,以及单独的视觉线索是否足以维持使用简单的视觉呈现与复杂的视觉和嗅觉呈现的社会互动。相对于中性对照(di处理模型),两性龟在MG处理模型中花费的总时间(p < 0.001)和执行的行为数量(p < 0.001)更多,这表明嗅觉MG分泌物也需要,以及乌龟的视觉存在,才能参与社会行为。我们的研究结果是该物种的第一个研究结果,表明信息素的使用可能会推动社会行为中的社会互动。
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来源期刊
acta ethologica
acta ethologica 生物-动物学
CiteScore
1.90
自引率
0.00%
发文量
18
审稿时长
>12 weeks
期刊介绍: acta ethologica publishes empirical and theoretical research papers, short communications, commentaries, reviews and book reviews as well as methods papers in the field of ethology and related disciplines, with a strong concentration on the behavior biology of humans and other animals. The journal places special emphasis on studies integrating proximate (mechanisms, development) and ultimate (function, evolution) levels in the analysis of behavior. Aspects of particular interest include: adaptive plasticity of behavior, inter-individual and geographic variations in behavior, mechanisms underlying behavior, evolutionary processes and functions of behavior, and many other topics. acta ethologica is an official journal of ISPA, CRL and the Portuguese Ethological Society (SPE)
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