作者：Podos, Jeffrey; Schroeder, Katie M.
作者单位：University of Massachusetts System; University of Massachusetts Amherst; University of Massachusetts System; University of Massachusetts Amherst
摘要：The theory of ecological speciation posits that adaptive divergence among incipient species raises incidental barriers to reproduction, thus catalyzing the emergence of new species. In this study, we conducted an experimental test of this theory in Gal & aacute;pagos finches, a clade in which beaks and mating songs are mechanistically linked. We forecasted the acoustic structure of songs for a set of possible evolutionary futures (successive droughts spurring increasingly large beaks) and, in ...
作者：Wikelski, Martin
作者单位：Max Planck Society; University of Konstanz
作者：Gomez-Marin, Alex
作者单位：Consejo Superior de Investigaciones Cientificas (CSIC); Universidad Miguel Hernandez de Elche; CSIC-UMH - Instituto de Neurociencias de Alicante (IN)
作者：Owen, Dave
作者单位：University of California System; University of California San Francisco
作者：Seeholzer, Laura
作者单位：University of California System; University of California San Francisco
摘要：Everything that enters our mouth can flow to the lungs or the stomach. Most of the time, things go in the right direction: Air enters the lungs, and food and liquid are shunted to the gastrointestinal tract. However, within an instant, this process can fail. Each time we eat, drink, or sleep, every breath holds the risk of aspirating food, liquid, or stomach acid into our airway. At best, aspiration evokes temporary panic and mild discomfort as we forcefully clear our airways. At worst, it can...
