Coordinated evolution of brain size, structure, and eye size in Trinidadian killifish.

ABSTRACT: Brain size, brain architecture, and eye size vary extensively in vertebrates. However, the extent to which the evolution of these components is intricately connected remains unclear. Trinidadian killifish, Anablepsoides hartii, are found in sites that differ in the presence and absence of large predatory fish. Decreased rates of predation are associated with evolutionary shifts in brain size; males from sites without predators have evolved a relatively larger brain and eye size than males from sites with predators. Here, we evaluated the extent to which the evolution of brain size, brain structure, and eye size covary in male killifish. We utilized wild-caught and common garden-reared specimens to determine whether specific components of the brain have evolved in response to differe

SUBMITTER: Howell KJ 

PROVIDER: S-EPMC7790632 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature