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Abstract

The present paper deals with the behaviour of the biological system comprising the commensal species and host species with a constant harvesting of the host species where as the commensal has mortality rate. Further both the species are considered in the natural limited resources. The nature of the ecological system can be observed by increasing the harvesting values of the host species in the dynamical model. The corresponding trajectories of the commensal species (growth, balanced and mortal commensal species) over the host species have been drawn for wide range of the values of the parameters in the model. The dominance reversal time of the commensal species over the host species or vice versa and the sustainability of the commensalism interaction between the species are discussed.