TY - JOUR T1 - Long-Term Dynamic Analysis of Endangered Species with Stage-Structure and Migrations in Polluted Environments AU - Liu , Fangfang AU - Wang , Kexin AU - Wei , Fengying JO - Annals of Applied Mathematics VL - 1 SP - 48 EP - 72 PY - 2020 DA - 2020/08 SN - 36 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/aam/18092.html KW - protection zones, stage-structure, random perturbations, migration, extinction and persistence. AB -
We propose a stochastic stage-structured single-species model with migrations and hunting within a polluted environment, where the species is separated
into two groups: the immature and the mature, which migrates from one patch
to another with different migration rates. By constructing a Lyapunov function, together with stochastic analysis approach, the stochastic single-species
model admits a unique global positive solution. We then utilize the comparison theorem of stochastic differential equations to investigate the extinction
and persistence of solution to stochastic single-species model. The main results
indicate that the species densities all depend on the intensities of random perturbations within both patches. As a consequence, we further provide several
strategies for protecting endangered species within protected and unprotected
patches.