At Low Densities and in the Absence of Any Competitors,the

Essay

At low densities and in the absence of any competitors,the population of a strain of the flour beetle Tribolium castaneum grows at a per capita rate of 0.3 per week.Under certain lab conditions,the presence of each 100 individuals of the same species reduces that rate by 0.02.The addition of a competitor,Tribolium freemani,reduces the population growth of T.castaneum by 0.04 for every 100 T.freemani individuals.If there are 800 T.castaneum and 400 T.freemani individuals,the per capita growth rate of the T.castaneum population is _______.