In this research paper we have informed and studied models of single species finite population growth with special references of ratio in two age groups. We have taken migration rate with prescribed ratio of one age group (pre-fertile group) and of second age group (fertile age group).Here and are strictly less than 1. The groups drown on the basis of new models are in agreement with the previous work results.
Keywords: population growth, single species, migration rate.
Manoj Kumar Shrivastava