학술논문
Divergent evolutionary pathways for aggression and territoriality in Astyanax cavefish
Document Type
Academic Journal
Author
Source
Subterranean Biology. July 15, 2022 Issue 31, p169, 15 p.
Subject
Language
English
ISSN
1768-1448
Abstract
Author(s): Luis Espinasa (corresponding author) [1]; Emily Collins [1,2]; C. Patricia Ornelas García [3,4]; Sylvie Rétaux [5]; Nicolas Rohner [6,7]; Jennifer Rutkowski [1,8] Introduction Organisms in which variation in behavior [...]
The surface morph of the Mexican tetra fish (Astyanax mexicanus) exhibits strong territoriality behavior and high levels of aggression. In contrast, the eyeless cave-adapted morph from Sierra de El Abra, México, rarely are aggressive and have totally lost the territorial behavior. These behaviors are part of what has been called the cavefish behavioral syndrome. Here, we report that several Astyanax cave populations of Sierra de Guatemala, unlike those reported for the Sierra de El Abra cave populations, display significant territoriality and aggression when confined into a reduced space. We discuss divergent evolutionary trajectories in terms of agonistic behavior for cavefish populations inhabiting different mountain ranges. Keywords: Abra, behavior, stygobyte, troglobite
The surface morph of the Mexican tetra fish (Astyanax mexicanus) exhibits strong territoriality behavior and high levels of aggression. In contrast, the eyeless cave-adapted morph from Sierra de El Abra, México, rarely are aggressive and have totally lost the territorial behavior. These behaviors are part of what has been called the cavefish behavioral syndrome. Here, we report that several Astyanax cave populations of Sierra de Guatemala, unlike those reported for the Sierra de El Abra cave populations, display significant territoriality and aggression when confined into a reduced space. We discuss divergent evolutionary trajectories in terms of agonistic behavior for cavefish populations inhabiting different mountain ranges. Keywords: Abra, behavior, stygobyte, troglobite