Modelling Multi-Species Parasite Transmission

被引:0
作者
Pugliese, Andrea [1 ]
机构
[1] Univ Trent, Dipartimento Matemat, I-38050 Trento, Italy
来源
MODELLING PARASITE TRANSMISSION AND CONTROL | 2010年 / 673卷
关键词
POPULATION-DYNAMICS; HELMINTH INFECTION; INTERSPECIFIC INTERACTIONS; HOST; STABILITY; AGGREGATION; COMPETITION; MACROPARASITES; COEXISTENCE; COMMUNITIES;
D O I
暂无
中图分类号
R-3 [医学研究方法]; R3 [基础医学];
学科分类号
1001 ;
摘要
Some models are presented for the dynamics of a host population with two parasite species. The models differ in two main aspects: whether they include direct competition among parasites and whether the analysis is based on some approximation and which one. If the analysis is not constrained by a priori assumptions about parasite distributions, it is found that species coexistence is very unlikely without some kind of direct competition among parasites; on the other hand, coexistence generally occurs when inter-specific competition is lower than intraspecific, similarly to standard theory for free-living species. If hosts differ in their predisposition to infection, but not in an identical way towards the two parasite species, then species coexistence becomes feasible even if inter-specific competition is as strong as intraspecific; in this case, coexistence becomes easier as the variance in predisposition increases. These models do not yield universal predictions for patterns of parasite distributions; an analysis of the mechanisms of interaction in each specific system is necessary for that.
引用
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页码:32 / 50
页数:19
相关论文
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