From Disorder to Order in Marching Locusts

Recent models from theoretical physics have predicted that mass-migrating animal groups may share group-level properties, irrespective of the type of animals in the group. One key prediction is that as the density of animals in the group increases, a rapid transition occurs from disordered movement of individuals within the group to highly aligned collective motion. Understanding such a transition is crucial to the control of mobile swarming insect pests such as the desert locust. We confirmed the prediction of a rapid transition from disordered to ordered movement and identified a critical density for the onset of coordinated marching in locust nymphs. We also demonstrated a dynamic instability in motion at densities typical of locusts in the field, in which groups can switch direction without external perturbation, potentially facilitating the rapid transfer of directional information.

[1]  G. G. Stokes "J." , 1890, The New Yale Book of Quotations.

[2]  F. Young Biochemistry , 1955, The Indian Medical Gazette.

[3]  W. Hamilton Geometry for the selfish herd. , 1971, Journal of theoretical biology.

[4]  B. Uvarov,et al.  Grasshoppers and locusts. A handbook of general acridology. Volume 2. Behaviour, ecology, biogeography, population dynamics. , 1977 .

[5]  A. Ōkubo Dynamical aspects of animal grouping: swarms, schools, flocks, and herds. , 1986, Advances in biophysics.

[6]  J. Deneubourg,et al.  Collective patterns and decision-making , 1989 .

[7]  AC Tose Cell , 1993, Cell.

[8]  Vicsek,et al.  Novel type of phase transition in a system of self-driven particles. , 1995, Physical review letters.

[9]  S. Gueron,et al.  The Dynamics of Herds: From Individuals to Aggregations , 1996 .

[10]  T. Vicsek,et al.  Spontaneously ordered motion of self-propelled particles , 1997, cond-mat/0611741.

[11]  A. Barabasi,et al.  Collective Motion of Self-Propelled Particles: Kinetic Phase Transition in One Dimension , 1997, cond-mat/9712154.

[12]  J. Toner,et al.  Flocks, herds, and schools: A quantitative theory of flocking , 1998, cond-mat/9804180.

[13]  D C Krakauer,et al.  Spatial scales of desert locust gregarization. , 1998, Proceedings of the National Academy of Sciences of the United States of America.

[14]  L. Edelstein-Keshet,et al.  Complexity, pattern, and evolutionary trade-offs in animal aggregation. , 1999, Science.

[15]  Stephen J. Simpson,et al.  Small‐scale vegetation patterns in the parental environment influence the phase state of hatchlings of the desert locust , 2000 .

[16]  Matthew Collett,et al.  Small‐scale processes in desert locust swarm formation: how vegetation patterns influence gregarization , 2000 .

[17]  E. Despland,et al.  Gregarious behavior in desert locusts is evoked by touching their back legs , 2001, Proceedings of the National Academy of Sciences of the United States of America.

[18]  I. Couzin,et al.  Collective memory and spatial sorting in animal groups. , 2002, Journal of theoretical biology.

[19]  Y. Tu,et al.  Moving and staying together without a leader , 2003, cond-mat/0401257.

[20]  I. Couzin,et al.  Self-Organization and Collective Behavior in Vertebrates , 2003 .

[21]  M. Burrows,et al.  Mechanosensory-induced behavioural gregarization in the desert locust Schistocerca gregaria , 2003, Journal of Experimental Biology.

[22]  D. Grünbaum Schooling as a strategy for taxis in a noisy environment , 1998, Evolutionary Ecology.

[23]  E. Despland,et al.  Landscape structure and locust swarming: a satellite's eye view , 2004 .

[24]  Maximino Aldana,et al.  Intermittency and clustering in a system of self-driven particles. , 2004, Physical review letters.

[25]  Martin Enserink,et al.  Can the War on Locusts Be Won? , 2004, Science.

[26]  H. Chaté,et al.  Onset of collective and cohesive motion. , 2004, Physical review letters.

[27]  宁北芳,et al.  疟原虫var基因转换速率变化导致抗原变异[英]/Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A , 2005 .

[28]  I. Couzin,et al.  Effective leadership and decision-making in animal groups on the move , 2005, Nature.

[29]  Gregory A. Sword,et al.  Radiotelemetry reveals differences in individual movement patterns between outbreak and non‐outbreak Mormon cricket populations , 2005 .