We present a parasitic model to explore the complex interaction between the desert shrub Haloxylon ammodendron and its parasitic plant Cistanche deserticola. This model incorporates the influence of harvesting practices on the host plant, which can lead to strong, weak, or no Allee effects, thereby significantly impacting the coexistence dynamics of the host-parasite system. Through a comprehensive analysis of the model’s global dynamics, we investigate the existence and stability of equilibria, as well as Hopf and heteroclinic bifurcations. These findings offer a comprehensive understanding of how the host-parasite system responds to different levels of harvesting intensity, providing valuable insights for ecological management. Our results underscore the importance of managing harvesting intensity as a critical strategy for preserving the vitality of these desert species, their parasitic counterparts, and ultimately, safeguarding the biodiversity of desert ecosystems.

中文翻译：

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收获压力下梭梭菌和肉苁蓉之间的寄生模型


我们提出了一个寄生模型来探索沙漠灌木 Haloxylon ammodendron 与其寄生植物肉苁蓉 （Cistanche deserticola） 之间的复杂相互作用。该模型结合了收获方式对寄主植物的影响，这可能导致强、弱或无 Allee 效应，从而显着影响寄主-寄生虫系统的共存动力学。通过对模型的全局动力学的全面分析，我们研究了平衡的存在和稳定性，以及 Hopf 和异斜分叉。这些发现为宿主-寄生虫系统如何响应不同程度的捕猎强度提供了全面的理解，为生态管理提供了有价值的见解。我们的研究结果强调了管理采伐强度的重要性，这是保护这些沙漠物种及其寄生对应物的活力并最终保护沙漠生态系统生物多样性的关键策略。