id author title date pages extension mime words sentences flesch summary cache txt cord-329050-vzsy6xw1 Nabi, Ghulam Bats and birds as viral reservoirs: A physiological and ecological perspective 2020-09-22 .txt text/plain 5059 296 54 These convergent traits in birds and bats and their ecological interactions with domestic animals and humans increase the potential risk of viral spillover transmission and facilitate the emergence of novel viruses that most likely sources of zoonoses with the potential to cause global pandemics. This paper reviews convergent traits in the physiology, immunology and flight-related ecology of birds and bats with the aim of a better understanding of why these species are such important reservoirs of viral zoonoses, and the potential risk of bat and bird viruses infecting humans. The convergent traits of miniaturized body size, enhanced metabolic rate and antioxidant capacity, prolonged lifespan, a short but efficient digestive tract, and possessing some specific immunological features relative to non-flying mammals are thought to be the result of functional constraints on evolution imposed by the demands of powered flight (Thomas and Suthers, 1972; Norberg, 1990; Caviedes-Vidal et al., 2007; Costantini, 2008; Munshi-South and Wilkinson, 2010; Song et al., 2020; ) . ./cache/cord-329050-vzsy6xw1.txt ./txt/cord-329050-vzsy6xw1.txt