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Different delays-induced regime shifts in a stochastic insect outbreak dynamics

Author

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  • Zeng, Jiakui
  • Zeng, Chunhua
  • Xie, Qingshuang
  • Guan, Lin
  • Dong, Xiaohui
  • Yang, Fengzao

Abstract

Considering time delays in the deterministic and stochastic forces, we construct stochastic delayed differential equations to investigate the regime shifts in an insect ecosystem. The stationary probability distribution (SPD) and mean first passage time (MFPT) are obtained, respectively. Our main results show: (i) The multiplicative noise, positive cross-correlation noise between two noises and time delays can induce the regime shifts from the boom outbreak state to the bust one, but the additive noise and negative cross-correlation can induce the regime shifts from the bust outbreak state to the boom one; (ii) For the negative cross-correlation, the MFPT as a function of noise strengths exhibits one maximum, which shows the characteristic of the noise-delayed switching for the boom outbreak state, but for the no cross-correlation or positive cross-correlation, the MFPT decreases with the noise strengths; (iii) Two different types of time delays play same roles on the maximal MFPT with additive noise, and play opposite roles on the maximal MFPT with multiplicative noise. The mechanisms for noises-and delays-induced regime shifts between two states can be explained physically through the effective potential of ecological model.

Suggested Citation

  • Zeng, Jiakui & Zeng, Chunhua & Xie, Qingshuang & Guan, Lin & Dong, Xiaohui & Yang, Fengzao, 2016. "Different delays-induced regime shifts in a stochastic insect outbreak dynamics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 462(C), pages 1273-1285.
    • Handle: RePEc:eee:phsmap:v:462:y:2016:i:c:p:1273-1285
    DOI: 10.1016/j.physa.2016.06.115
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    Cited by:

    1. Zhong, Guang-Yan & Li, Jiang-Cheng & Jiang, George J. & Li, Hai-Feng & Tao, Hui-Ming, 2018. "The time delay restraining the herd behavior with Bayesian approach," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 507(C), pages 335-346.
    2. Zhong, Guang-Yan & He, Feng & Li, Jiang-Cheng & Mei, Dong-Cheng & Tang, Nian-Sheng, 2019. "Coherence resonance-like and efficiency of financial market," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 534(C).
    3. Li, Jiangcheng & Zhang, Chunmin & Liu, Jifa & Li, Zhen & Yang, Xuan, 2018. "An application of Mean Escape Time and metapopulation on forestry catastrophe insurance," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 495(C), pages 312-323.
    4. Dong, Yang & Wen, Shu-hui & Hu, Xiao-bing & Li, Jiang-Cheng, 2020. "Stochastic resonance of drawdown risk in energy market prices," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 540(C).
    5. Guo, Di & Li, Chun & Mei, Dong-Cheng, 2019. "Switch process induced by the sine-Wiener noises in the gene transcriptional regulatory system," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 525(C), pages 1192-1202.

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