论文标题
其他食物会导致捕食者“爆炸” - 除非捕食者竞争
Additional food causes predator "explosion" -- unless the predators compete
论文作者
论文摘要
文献认为,如果补充了高质量的额外数量食品$ξ>ξ_{crigital} $,\ cite {spv18,spv18,spd17,spd17,spm13}。我们显示这种方法导致捕食者人群无限的时间爆炸。我们提出了一个替代模型,其中额外的食物会引起捕食者的竞争。本文分析表明,阈值$ c^{*} _ {1} <c^{*} _ {2} <c^{*} _ {3} $的竞赛参数$ c $,s.t。当$ c <c^{*} _ {1} $时,无害虫状态在全球范围内稳定,当$ c^{*} _ {2} <c <c <c <c^{*} _ {3} $,bi-c稳定性是可能的,当$ c^{*} _ {*} _ {3} _ {3} <c $,thre Interibium均可处于iors inor and op ior sorior sorior。随着$ c $和$ξ$ - $ c $的变化,标准共同维度一,并且观察到两个分叉。最近涉及捕食者竞争的动力学系统文献报告了几种非标准分叉,例如saddle-node-transitical分叉分叉(SNTC),发生在co-dimension两\ cite {ksv10,bs07},bs07},cusp- thansp-transpitical ticallitical bifurcation(cptc)中(cptc)(cptc)(cptc)co-dimensiels the thimensive thimensive thimensive thimensive the n,bs。我们表明,在我们的模型中,可以利用结构对称性来构建Co-Dimension 2中的SNTC,而CPTC也可以在Co-dimension二中构建。我们进一步使用这些对称性来构建一个新型的干草叉 - 临界分叉(PTC),以明确表征模型的新组织中心。还观察到了诸如同时轨道轨道,同时发生的极限周期和竞争驱动的图灵模式之类的动力学。我们的发现表明,与某些文献相反,在捕食者 - 预赛模型中增加其他食物可能会阻碍生物控制。但是,还会引起捕食者竞争的其他食物,导致新型的生物控制情景,并补充了\ cite {H21,B98,K04,D20,BS07,VH19}中的工作。
The literature posits that an introduced predator population, is able to drive it's target pest population extinct, if supplemented with high quality additional food of quantity $ξ> ξ_{critical}$, \cite{SP11, SPV18, SPD17, SPM13}. We show this approach leads to infinite time blow-up of the predator population. We propose an alternate model in which the additional food induces predator competition. Analysis herein indicates that there are threshold values $c^{*}_{1} < c^{*}_{2} < c^{*}_{3}$ of the competition parameter $c$, s.t. when $c < c^{*}_{1}$, the pest free state is globally stable, when $c^{*}_{2} < c < c^{*}_{3}$, bi-stability is possible, and when $c^{*}_{3} < c$, up to three interior equilibriums could exist. As $c$ and $ξ$-$c$ are varied, standard co-dimension one and co-dimension two bifurcations are observed. The recent dynamical systems literature involving predator competition, report several non-standard bifurcations such as the saddle-node-transcritical bifurcation (SNTC) occurring in co-dimension two \cite{KSV10, BS07}, and cusp-transcritical bifurcation (CPTC) in co-dimension three, \cite{D20, BS07}. We show that in our model structural symmetries can be exploited to construct a SNTC in co-dimension two, and a CPTC also in co-dimension two. We further use these symmetries to construct a novel pitchfork-transcritical bifurcation (PTC) in co-dimension two, thus explicitly characterizing a new organizing center of the model. Dynamics such as homoclinic orbits, concurrently occurring limit cycles, and competition driven Turing patterns are also observed. Our findings indicate that increasing additional food in predator-pest models, can hinder bio-control, contrary to some of the literature. However, additional food that also induces predator competition, leads to novel bio-control scenarios, and complements the work in \cite{H21, B98, K04, D20, BS07, VH19}.