Dr Christos C Ioannou

BSc(U.C.Lond.), PhD(Leeds)

  • BS8 1TQ


Research output per year

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Personal profile

Research interests

Since my PhD with Prof. Jens Krause at the University of Leeds, I've been interested in the evolution of group living in animals and how these groups form and are maintained. My research has covered mutliple aspects of group living, including more subtle group properties such why groups show polarisation (all individuals facing the same direction) or leadership rather than egalitarianism. I generally use fish as a model system to test predictions and assumptions of theoretical models; working alongside modellers has been and continues to be a big part of my research.

Collective behaviour is a very inter-disciplinery area of research as it has importance to any organism that interacts socially, from microbes and plants all the way to humans. Although my training is very much in animal behaviour and behavioural ecology, I try to keep a broad perspective and collaborate with researchers in other fields. This includes physics and mathematics which provides a solid theoretical grounding for group processes and new analytic tools, and psychology which has a long history of studying social relationships in humans, many aspects of which apply to non-human animals as well.

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Research Output

  • 44 Article (Academic Journal)
  • 1 Chapter in a book

Predatory Fish Select for Coordinated Collective Motion in Virtual Prey

Ioannou, C. C., Guttal, V. & Couzin, I. D., 7 Sep 2012, In : Science. 337, 6099, p. 1212-1215 4 p.

Research output: Contribution to journalArticle (Academic Journal)

159 Citations (Scopus)

Emergent Sensing of Complex Environments by Mobile Animal Groups

Berdahl, A., Torney, C. J., Ioannou, C. C., Faria, J. J. & Couzin, I. D., 1 Feb 2013, In : Science. 339, 6119, p. 574-576 3 p.

Research output: Contribution to journalArticle (Academic Journal)

232 Citations (Scopus)

Uninformed individuals promote democratic consensus in animal groups

Couzin, I. D., Ioannou, C. C., Demirel, G., Gross, T., Torney, C. J., Hartnett, A., Conradt, L., Levin, S. A. & Leonard, N. E., Dec 2011, In : Science. 334, 6062, p. 1578 - 1580 3 p.

Research output: Contribution to journalArticle (Academic Journal)

  • 224 Citations (Scopus)


    Christopher Barnard Award

    Ioannou, Christos C (Recipient), 2013

    Prize: Prizes, Medals, Awards and Grants

  • Activities

    • 2 Fellowship awarded competitively

    Research Fellowship - Using real predators and robot prey to investigate the importance of predators in prey responses.

    Christos C Ioannou (Recipient)

    1 Oct 20131 Oct 2018

    Activity: Other activity typesFellowship awarded competitively

    Early Career Fellowship - Causes and consequences of emergent leadership distributions

    Christos C Ioannou (Recipient)

    1 Oct 20111 Oct 2013

    Activity: Other activity typesFellowship awarded competitively

    Supervised Work

    Competitive Behaviour, Impact and Success of Invasive Tilapia (Oreochromis spp.) in Quintana Roo, Mexico

    Author: Gracida Juarez, C. A., 23 Jun 2020

    Supervisor: Ioannou, C. (Supervisor) & Genner, M. (Supervisor)

    Student thesis: Doctoral ThesisDoctor of Philosophy (PhD)


    Investigating the Interactions between Social Behaviour and Habituation to a Novel Environment in Sticklebacks (Gasterosteus aculeatus)

    Author: Poole, C., 23 Jan 2019

    Supervisor: Ioannou, C. (Supervisor)

    Student thesis: Master's ThesisMaster of Science (MSc)