Convergence on reduced aggression through shared behavioral traits in multiple populations of Astyanax mexicanus.

ABSTRACT:

Background

Aggression is observed across the animal kingdom, and benefits animals in a number of ways to increase fitness and promote survival. While aggressive behaviors vary widely across populations and can evolve as an adaptation to a particular environment, the complexity of aggressive behaviors presents a challenge to studying the evolution of aggression. The Mexican tetra, Astyanax mexicanus exists as an aggressive river-dwelling surface form and multiple populations of a blind cave form, some of which exhibit reduced aggression, providing the opportunity to investigate how evolution shapes aggressive behaviors.

Results

To define how aggressive behaviors evolve, we performed a high-resolution analysis of multiple social behaviors that occur during aggressive interacti

SUBMITTER: Rodriguez-Morales R 

PROVIDER: S-EPMC9563175 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature