PDF(Pubmed)
Abstract：
Research into the hunting behavior in members of the Cricetidae family offers an opportunity to reveal what changes in the predatory behavioral sequences occur when a rodent species shifts from an omnivorous to a predatory lifestyle. The study tests the following hypotheses: are there phylogenetic differences in the divergence of species\' predatory lifestyles in hamsters or do ecological factors lead to shaping their hunting behavior? We applied the data compression approach for performing comparative analysis of hunting patterns as biological \"texts.\" The study presents a comparative analysis of hunting behaviors in five Cricetinae species, focusing on the new data obtained for the desert hamster Phodopus roborovskii whose behavior has never been studied before. The hunting behavior of P. roborovskii appeared to be the most variable one. In contrast, behavioral sequences in P. campbelli and Allocricetulus curtatus display more significant order and predictability of behavior during hunting. Optional hunting behavior in the most ancient species P. roborovskii displayed similarities with obligate patterns in \"young\" Allocricetulus species. It thus turned out to be the most advanced hunter among members of the Phodopus genus. Differences in hunting sequences among Phodopus representatives suggest that the hunting behavior of these species, despite its optional mode, was subject to selection during species splitting within the genus. These results did not reveal the role played by phylogenetic differences in the divergence of species\' predatory lifestyles. They suggested that ecological conditions are the main factors in speciation of the hunting behavior in hamsters.
摘要：
对Cricetidae家族成员的狩猎行为的研究提供了一个机会，可以揭示当啮齿动物从杂食性转变为掠夺性生活方式时，掠夺性行为序列发生了什么变化。该研究检验了以下假设：仓鼠中物种掠夺性生活方式的差异是否存在系统发育差异，或者生态因素是否导致其狩猎行为的形成？我们应用数据压缩方法对作为生物学文本的狩猎模式进行比较分析。“这项研究提供了对五种Cricetinae物种的狩猎行为的比较分析，专注于沙漠仓鼠Phodopusroborovskii的行为从未被研究过的新数据。罗博罗夫斯基的狩猎行为似乎是变化最大的。相比之下,在狩猎过程中，P.campbelli和Allocricetuluscurtatus的行为序列显示出更重要的行为顺序和可预测性。在最古老的物种中，可选的狩猎行为与“年轻的”Allocricetulus物种中的专性模式相似。因此，它被证明是Phodopus属成员中最先进的猎人。Phodopus代表之间狩猎序列的差异表明，这些物种的狩猎行为，尽管它的可选模式，在属内的物种分裂过程中受到选择。这些结果没有揭示系统发育差异在物种掠夺性生活方式差异中所起的作用。他们认为，生态条件是仓鼠狩猎行为物种形成的主要因素。
