Silva Ana Paula Bueno da, Oliveira Isabel Pires Mascarenhas Ribeiro, Bastos-Pereira Rafaela, Ferreira Rodrigo Lopes
Programa de Pós-graduação em Ecologia Aplicada, Departamento de Biologia, Universidade Federal de Lavras, C.P. 3037, CEP 37200-000 Lavras, Minas Gerais, Brazil.
Programa de Pós-graduação em Ecologia Aplicada, Departamento de Biologia, Universidade Federal de Lavras, C.P. 3037, CEP 37200-000 Lavras, Minas Gerais, Brazil; Centro de Estudos em Biologia Subterrânea, Departamento de Biologia/Setor de Zoologia Geral, Universidade Federal de Lavras, C.P. 3037, CEP. 37200-000 Lavras, Minas Gerais, Brazil.
Behav Processes. 2018 Aug;153:55-65. doi: 10.1016/j.beproc.2018.05.009. Epub 2018 May 22.
There is a huge lack of information regarding the natural history of subterranean species, particularly focusing on aspects of the behavioral ecology of Brazilian cave fauna. In the present work, we aimed to describe and evaluate the behavioral repertoire of Xangoniscus itacarambiensis (Isopoda, Styloniscidae) through observations in the field and laboratory and also by means of complementary experiments. Overall, we recorded 25 spontaneous behaviors. Besides describing the physical habitat, we recorded some intraspecific interactions, agonistic and territorial behaviors, as well as the amphibian habit. There was a direct relationship between the size of travertine dams where they live (measurements of length and width) and the mean number of individuals, although there was no significant correlation with the pool depth. Behaviors observed in the laboratory differed qualitatively and quantitatively from those observed in the field, with individuals more active in the latter. This scenario alerts about the significant behavioral alteration of such isopods when removed from their natural habitat, what must be considered in future behavioral studies including troglobites given their natural sensitivity to environmental changes.
关于地下物种的自然史，尤其是巴西洞穴动物行为生态学方面，存在大量信息缺失。在本研究中，我们旨在通过野外和实验室观察以及补充实验来描述和评估伊塔卡兰比恩斯香戈尼斯（等足目，柱形等足科）的行为模式。总体而言，我们记录了25种自发行为。除了描述物理栖息地外，我们还记录了一些种内相互作用、争斗和领地行为以及两栖习性。它们生活的钙华坝的大小（长度和宽度测量）与个体平均数量之间存在直接关系，尽管与水池深度没有显著相关性。在实验室观察到的行为在质量和数量上与在野外观察到的行为不同，个体在野外更活跃。这种情况提醒我们，当这些等足类动物从其自然栖息地移除时，它们的行为会发生显著改变，鉴于洞穴生物对环境变化的天然敏感性，在未来包括洞穴生物在内的行为研究中必须考虑这一点。
