Ecophysiology, ecological consequences and evolution of tropical hibernation in sympatric dwarf lemurs from high-altitude rainforests of Madagascar

马达加斯加高海拔雨林同域矮狐猴热带冬眠的生态生理学、生态后果和演化

• 批准号: 214657328
• 负责人: Professorin Dr. Kathrin Dausmann
• 金额: --
• 依托单位: Abteilung Funktionelle Ökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/214657328?language=en
• 关键词: Ecophysiology; ecological; consequences; evolution; tropical

Torpor and hibemation are generally favourable strategies in seasonal environments where energy conservation is critical during periods of resource scarcity. Thus, heterothermie endothermy is not restricted to temperate environments but it can also occur in tropical habitats such as Madagascar's forests which are characterized by environmental unpredictability and strong seasonality. This project will target the ecophysiology of heterothermy and energetic balances in two tropical primates, i.e., the partially sympatric dwarf lemur species Cheirogaleus crossleyi and C. sibreei. The study will be conducted by a combination of well-established ecological and state-of-the-art ecophysiological approaches and methods. By comparing different dwarf lemur species living under maritedly different as well as same climatic conditions, we aim to 1) determine which factors influence propensity to enter heterothermie states and thermoregulatory pattems during activity and hibemation 2) assess how anthropogenic alteration of habitat, i.e., forest fragmentation, affects ecophysiological parameters 3) evaluate the adaptive value of tropical hibemation under present-day climatic conditions (according to the "Epaminondas effect") 4) shed light on fundamental principles of the evolution of hibernation in a tropical environment.

在季节性环境中，在资源稀缺期间，能源保护至关重要，因此，休眠和冬眠通常是有利的策略。因此，异温性内温性并不局限于温带环境，它也可以发生在热带生境，如马达加斯加的森林，其特点是环境的不可预测性和强烈的季节性。该项目将针对两种热带灵长类动物的异温和能量平衡的生态生理学，即，部分同域分布的矮狐猴种Cheirogaleus crossleyi和C. sibreei。该研究将通过完善的生态学和最先进的生态生理学方法和方法相结合进行。通过比较不同的矮狐猴物种生活在不同的海洋以及相同的气候条件下，我们的目标是1）确定哪些因素影响的倾向，进入异源状态和体温调节模式在活动和冬眠2）评估如何人为改变栖息地，即，森林破碎化影响生态生理参数; 3）根据“Epaminondas效应”评价热带冬眠在现代气候条件下的适应价值; 4）阐明热带环境中冬眠演变的基本原理。