The manipulation of the population growth of a pest species: an analytical approach.

Published online
01 Jan 1982
Content type
Journal article
Journal title
Journal of Applied Ecology

Longstaff, B. C.

Publication language


The demographic effects of reducing temperature and of insecticidal application against populations of the stored-grain pest Sitophilus oryzae (L.) were investigated analytically using a Leslie matrix model of population growth. This was an extension of work by L. P. Lefkovitch [see RAE/A 56, 314]. Reduction of the grain temperature from 27 to 18 deg C and imposing an adult mortality of 83% at 27 deg C depressed population growth equally. The prevention of population growth at 18 deg C required only 59% adult mortality per week, whereas at 27 deg C, 95% was required. The implications of these results for control strategies are discussed.

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