Demographic history and high-altitude adaptation in a specialized species, Andean torrent duck (Merganetta armata)

Population variation, and in particular genetic variation is the ultimate source for diversification and adaptation to a variable environment. In the Andes, the Torrent Duck is an ideal riverine specialist species to study evolutionary processes related to acclimatization and adaptation in traits associated with hypoxia tolerance. The development of this research will lay the foundation to understand demographic processes, adaptation, and speciation, but also provide specific new information about distribution, population sizes, gene flow, recruitment, and recent adult dispersal that may assist in the management and conservation of this species in their fragile Andean riverine habitats.

种群变异，尤其是遗传变异，是物种多样化与适应多变环境的根本来源。在安第斯山脉区域，湍鸭（Torrent Duck）是研究与低氧耐受相关性状的驯化适应与适应性演化进程的理想河栖特化物种。本研究的开展不仅将为理解种群动态过程、适应性演化与物种形成奠定基础，还将提供该物种在分布范围、种群规模、基因流、种群补充以及近期成体扩散等方面的特异性新信息，这些信息可助力该物种在其脆弱的安第斯河栖生境中的管理与保护工作。