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Behavioral responses of rural and urban greater white-toothed shrews ( Crocidura russula ) to sound disturbance
Urban Ecosystems ( IF 2.9 ) Pub Date : 2021-01-03 , DOI: 10.1007/s11252-020-01079-y
Flávio G. Oliveira , Joaquim T. Tapisso , Sophie von Merten , Leszek Rychlik , Paulo J. Fonseca , Maria da Luz Mathias

The development of urban areas imposes challenges that wildlife must adapt to in order to persist in these new habitats. One of the greatest changes brought by urbanization has been an increase in anthropogenic noise, with negative consequences for the natural behavior of animals. Small mammals are particularly vulnerable to urbanization and noise, despite some species having successfully occupied urban environments. To understand some of the traits that have enabled small mammals to deal with the consequences of urbanization, we compared the behavioral responses of urban and rural greater white-toothed shrews, Crocidura russula, to different sound stimuli. A total of 32 shrews, 16 from each habitat, were exposed in captivity to four sound treatments: silence, tawny owl calls, traffic noise, and white noise. Urban and rural shrews showed different behaviors, with urban animals being more active, feeding more frequently, and using less torpor than rural individuals. However, responses to sound treatments were similar in both populations: urban and rural shrews exhibited a slight decrease in activity and feeding behavior, as well as more fleeing responses, when exposed to traffic noise or white noise, but not to owl calls. These results suggest urbanization induces long-term changes in the general activity of C. russula, but the short-term behavioral response to sound disturbance remains similar in rural and urban populations.



中文翻译:

城乡较大的白齿sh(Crocidura russula)对声音干扰的行为反应

市区的发展带来了野生生物必须适应的挑战,才能在这些新的栖息地中生存。城市化带来的最大变化之一是人为噪声的增加,对动物的自然行为产生了负面影响。尽管某些物种已成功占领了城市环境,但小型哺乳动物特别容易受到城市化和噪音的影响。为了了解使小型哺乳动物能够应对城市化后果的某些特征,我们比较了城市和农村较大的白齿sh(Crocidura russula)的行为反应,以不同的声音刺激。总共32个sh,每个栖息地有16个,在囚禁中接受了四种声音处理:静音,黄褐色的猫头鹰叫声,交通噪音和白噪音。城市和农村的sh表现出不同的行为,城市动物比农村个体更活跃,更频繁地进食并且使用更少的劳动。但是,在两种人群中,对声音处理的反应都相似:当暴露于交通噪声或白噪声而不是猫头鹰的叫声下,城市和农村的rew表现出活动和进食行为略有下降,逃逸的反应也更多。这些结果表明,城市化引起了俄罗斯弯曲杆菌的总体活动的长期变化,但对声音干扰的短期行为反应在城乡人口中仍然相似。

更新日期:2021-01-03
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