The genetic basis of the kakapo structural color polymorphism suggests balancing selection by an extinct apex predator.

ABSTRACT: The information contained in population genomic data can tell us much about the past ecology and evolution of species. We leveraged detailed phenotypic and genomic data of nearly all living kākāpō to understand the evolution of its feather color polymorphism. The kākāpō is an endangered and culturally significant parrot endemic to Aotearoa New Zealand, and the green and olive feather colorations are present at similar frequencies in the population. The presence of such a neatly balanced color polymorphism is remarkable because the entire population currently numbers less than 250 birds, which means it has been exposed to severe genetic drift. We dissected the color phenotype, demonstrating that the two colors differ in their light reflectance patterns due to differential feather structure.

SUBMITTER: Urban L 

PROVIDER: S-EPMC11386469 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature