I’m Alexander Suh, my paper evaluates the evolutionary signature of
modern birds and discovered extreme degrees of complex conflict at onset
of the “big bang” of modern birds, when speciation of birds began
rapidly after dinosaur extinction – AMA!
Abstract
Hi Reddit, My name is Alexander Suh and I am a postdoctoral researcher
at Uppsala University in Sweden. My research focuses on the evolution of
birds and their genomic parasites, such as transposons and viruses. We
recently published a study in PLOS Biology titled “The dynamics of
incomplete lineage sorting across the ancient adaptive radiation of
neoavian birds”. There we analyzed the evolutionary signature of what
some call the ‘big bang’ of modern birds, a rapid succession of
speciation events following the extinction of dinosaurs. We used ancient
retrotransposon insertions from 48 bird genomes to reconstruct
evolutionary relationships, showing that most of the bird Tree of Life
can be reliably resolved by our study and previous studies. However, we
were surprised to find that the very onset of the ‘big bang’ of modern
birds harbors extreme degrees of conflict. In fact, the conflicts are so
complex that they look more like a network than a tree. Our explanation
for this complexity is that bird speciation in the direct aftermath of
dinosaur extinction was extremely rapid, potentially too rapid to be
resolvable as a single tree. I will be answering your questions at 1 pm
EST (10am PST, 7 pm CET). Ask Me About Birds, Transposons, Anything!
Don’t forget to follow me on Twitter @alexander_suh and visit my
website.