Molecular Mechanisms of Spawning Habits for the Adaptive Radiation of Endemic East Asian Cyprinid Fishes.

ABSTRACT: Despite the widespread recognition of adaptive radiation as a driver of speciation, the mechanisms by which natural selection generates new species are incompletely understood. The evolutionary radiation of endemic East Asian cyprinids has been proposed as evolving through a change in spawning habits, involving a transition from semibuoyant eggs to adhesive eggs in response to crosslinked river-lake system formation. Here, we investigated the molecular mechanisms that underpin this radiation, associated with egg hydration and adhesiveness. We demonstrated that semibuoyant eggs enhance hydration by increasing the degradation of yolk protein and accumulation of Ca²⁺ and Mg²⁺ ions, while adhesive eggs improve adhesiveness and hardness of the egg envelope by producing an

SUBMITTER: Chen F 

PROVIDER: S-EPMC9513835 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature