Geographic variation in the altitudinal migration patterns, body size, oxidative status and exploratory behavior in a neotropical bird

• Published in: Ecology and evolution Vol. 13; no. 3; pp. e9941 - n/a
• Main Authors: Poblete, Yanina, Contreras, Carolina, Fernández, Carolina, Flores, Cristian R., Vega, Patricia, Ávila, Miguel, Sabat, Pablo
• Format: Journal Article
• Language: English
• Published: England John Wiley & Sons, Inc 01.03.2023; John Wiley and Sons Inc; Wiley
• Subjects: Adaptation; altitudinal migration; Anthropogenic factors; Antioxidants; Behavior; Behavioural Ecology; Bird migration; Birds; Body size; Breeding sites; Climate change; Elevation; Environmental conditions; Exploratory behavior; Food; Geographical variations; Human influences; Hypotheses; Latitude; local adaptations; Local population; Metabolism; Mountain ecosystems; Mountains; mountains birds; oxidative stress; Phenotypes; Physiology; Populations; Rain; Variability; Weather; altitudinal migration; exploratory behavior; mountains birds; local adaptations; oxidative stress
• ISSN: 2045-7758; 2045-7758
• DOI: 10.1002/ece3.9941

To cope with life in the mountains, populations of the same species can exhibit substantial variability in their altitudinal migration patterns and phenotypes in response to local weather conditions. Studying such variability can provide valuable insights into how local populations respond to environmental challenges, and this information can be useful for conservation efforts in mountain ecosystems. Here, we used δ2H values of feathers and blood to evaluate latitudinal variation in altitudinal migration patterns and its possible links with body size, oxidative status, and exploratory behavior in 72 individuals of rufous‐collared sparrow (Zonotrichia capensis) that breed at low and high elevations in the center (~33°) and south (~38°) of Chile. Our results show that both altitudinal migration patterns and oxidative status were significantly influenced by the latitude of breeding sites, while exploratory behavior was associated with elevation. Notably, we found that fast‐explorer birds inhabiting low elevations in central Chile displayed higher levels of oxidative damage than slow‐explorer birds. These outcomes underscore the possibility of local adaptations in response to diverse local environmental conditions in the Andes. We discuss the implications of latitude, elevation, and environmental temperature in shaping the observed patterns and highlight the significance of identifying local adaptations in mountain birds for better predicting their response to climate change and other challenges stemming from anthropogenic activities. Individuals of the same species can substantially vary their altitudinal migration pattern and phenotype according to local weather conditions. Here, we evaluate latitudinal variation in altitudinal migration patterns and its possible links with body size, oxidative status, and exploratory behavior in a neotropical bird.