Key Laboratory of Grassland Resources, Ministry of Education, Hohhot, China.
Key Laboratory of Grassland Rodent Ecology and Pest Controlled, Inner Mongolia, Hohhot, China.
PeerJ. 2024 Feb 21;12:e16811. doi: 10.7717/peerj.16811. eCollection 2024.
is a major rodent found in arid environments and desert areas. They feed on plant seeds, young branches and some small insects, and have hibernating habits. Peak numbers impact the construction of the plant community in the environment, but also have a human impact as these rodents carry a variety of parasitic fleas capable of spreading serious diseases to humans. Based on 216 present distribution records of and seven environmental variables, this article simulates the potential distribution of during the Last Glacial Maximum, the mid-Holocene, the present and the future (2070s, RCP4.5, RCP8.5). This study also analyzes the geographic changes of the population distribution and evaluates the importance of climate factors by integrating contribution rate, replacement importance value and the jackknife test using the MaxEnt model. In this study, we opted to assess the predictive capabilities of our model using the receiver operating characteristic (ROC) and partial receiver operating characteristic (pROC) metrics. The findings indicate that the AUC value exceeds 0.9 and the AUC ratio is greater than 1, indicating superior predictive performance by the model. The results showed that the main climatic factors affecting the distribution of the three-toed jerboa were precipitation in the coldest quarter, temperature seasonality (standard deviation), and mean annual temperature. Under the two warming scenarios of the mid-Holocene and the future, there were differences in the changes in the distribution area of the three-toed jerboa. During the mid-Holocene, the suitable distribution area of the three-toed jerboa expanded, with a 93.91% increase in the rate of change compared to the Last Glacial Maximum. The size of the three-toed jerboa's habitat decreases under both future climate scenarios. Compared to the current period, under the RCP4.5 emission scenario, the change rate is -2.96%, and under the RCP8.5 emission scenario, the change rate is -7.41%. This indicates a trend of contraction in the south and expansion in the north. It is important to assess changes in the geographic population of due to climate change to formulate population control strategies of these harmful rodents and to prevent and control the long-distance transmission of zoonotic diseases.
三趾跳鼠是一种主要的啮齿动物,分布于干旱环境和沙漠地区。它们以植物种子、嫩枝和一些小昆虫为食,具有冬眠习性。峰值数量会对环境中植物群落的构建产生影响,但由于这些啮齿动物携带多种寄生跳蚤,能够向人类传播严重疾病,因此也会对人类造成影响。本文基于 216 个三趾跳鼠的现有分布记录和七个环境变量,模拟了末次冰期、中全新世、现在和未来(2070 年代,RCP4.5,RCP8.5)三趾跳鼠的潜在分布。本研究还通过整合贡献率、替代重要值和刀切检验,利用最大熵模型分析了种群分布的地理变化,并评估了气候因素的重要性。在本研究中,我们选择使用接收者操作特征(ROC)和部分接收者操作特征(pROC)指标来评估模型的预测能力。研究结果表明,AUC 值超过 0.9,AUC 比值大于 1,表明模型具有优越的预测性能。结果表明,影响三趾跳鼠分布的主要气候因素是最冷月降水量、温度季节性(标准差)和年平均温度。在中全新世和未来的两种变暖情景下,三趾跳鼠分布区的变化存在差异。在中全新世,三趾跳鼠的适宜分布区扩大,与末次冰期相比,变化率增加了 93.91%。在未来的两种气候情景下,三趾跳鼠的栖息地面积都在缩小。与当前时期相比,在 RCP4.5 排放情景下,变化率为-2.96%,在 RCP8.5 排放情景下,变化率为-7.41%。这表明其分布范围呈向南收缩、向北扩张的趋势。评估由于气候变化导致的三趾跳鼠地理种群变化,对于制定这些有害啮齿动物的种群控制策略以及预防和控制人畜共患疾病的远距离传播具有重要意义。