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A stochastic lattice model for locust outbreak

Author

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  • Kizaki, Shinya
  • Katori, Makoto

Abstract

The locust is a kind of grasshoppers. Gregarious locusts form swarms and can migrate over large distances and they spread and damage a large area (locust outbreak). When the density is low, each of locusts behaves as an individual insect (solitary phase). As locusts become crowded, they become to act as a part of a group (gregarious phase) as a result of interactions among them. Modeling of this phenomenon is a challenging problem of statistical physics. We introduce a stochastic cellular automaton model of locust population-dynamics on lattices. Change of environmental conditions by seasonal migration is a key factor in gregarisation of locusts and we take it into account by changing the lattice size periodically. We study this model by computer simulations and discuss the locust outbreak as a cooperative phenomena.

Suggested Citation

  • Kizaki, Shinya & Katori, Makoto, 1999. "A stochastic lattice model for locust outbreak," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 266(1), pages 339-342.
    • Handle: RePEc:eee:phsmap:v:266:y:1999:i:1:p:339-342
    DOI: 10.1016/S0378-4371(98)00613-X
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    Cited by:

    1. Lee, Sang Dong & Park, Sohyun & Park, Young-Seuk & Chung, Yeong-Jin & Lee, Buom-Young & Chon, Tae-Soo, 2007. "Range expansion of forest pest populations by using the lattice model," Ecological Modelling, Elsevier, vol. 203(1), pages 157-166.
    2. Nguyen, Tuyen Van & Park, Young-Seuk & Jeoung, Chang-Sik & Choi, Won-Il & Kim, Yong-Kuk & Jung, Il-Hyo & Shigesada, Nanako & Kawasaki, Kohkichi & Takasu, Fugo & Chon, Tae-Soo, 2017. "Spatially explicit model applied to pine wilt disease dispersal based on host plant infestation," Ecological Modelling, Elsevier, vol. 353(C), pages 54-62.

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