Sebastian Ramirez Amaya

IHO Affiliated Graduate Student
Graduate Assistant/Associate
TEMPE Campus
Grad Teaching Associate
Graduate Assistant/Associate
TEMPE Campus

Student Information

Graduate Student
The College of Lib Arts & Sci


I study non-human primates behavior and ecology, specifically of those who live in "high-degree fission-fusion societies". I study the Ngogo chimpanzees in Uganda, and two communities of spider monkeys in Colombia and Ecuador. My dissertation aims to elucidate the nature of male-female chimpanzees social interactions and its' implications on future reproduction. 




Undergraduate Institution: Universidad de Los Andes (COL)

Google Scholar

Research Interests

Primatology, Behavioral ecology, Genetics, 


  • Piel, A. K., Bonnin, N., Ramirez-Amaya, S., Wondra, E., & Stewart, F. A. (2018). Chimpanzees and their mammalian sympatriates in the Issa Valley, Tanzania. African Journal of Ecology.
  • Link, A., Ramirez-Amaya, S., Montes-Rojas, A., de Luna, A.G., and Di Fiore, A. (2018). Dinámica demográfica de los monos araña café (Ateles hybridus) en un hábitat fragmentado en San Juan de Carare, Colombia. In: Primatología en Latinoamerica (B. Urbani, M. Kowalewski, R.G. Teixeira da Cunha, S. de la Torre, and L. Cortés-Ortiz, eds.) Caracas, Venezuela: Instituto Venezolano de Investigaciones Científicas.
  • Ramirez-Amaya, S., McLester, E., Stewart, F. A., & Piel, A. K. (2015). Savanna chimpanzees (Pan troglodytes schweinfurthii) consume and share blue duiker (Philantomba monticola) meat in the Issa Valley, Ugalla western Tanzania. Pan Africa News22(2).
  • Ramirez-Amaya S, Link A (2014). La socialidad del sexo dispersor: naturaleza de los lazos y relaciones sociales de las hembras en un grupo de monos araña café, Ateles hybridus, en el Magdalena Medio de Colombia. Undergraduate honors thesis en: Catalogo Universidad de Los Andes. Universidad de Los Andes. Bogotá, Colombia.

Research Activity

My research interest lies both in the biological evolution of primates´ social and mating systems. Using primate behavioral and molecular ecology I intend to explore the nature of social behavior and ultimately, to understand the relevance of fission-fusion dynamics in the evolution of human sociality.