oa African Entomology - Population dynamics of the bark beetle Phloeotribus scarabaeoides Bernard (Coleoptera: Scolytidae), a pest of African olive orchards in Morocco
Studies on mortality in the four annual generations of the bark beetle Phloeotribus scarabaeoides Bernard were conducted in a Moroccan olive orchard by placing cut logs for oviposition. Neither the density of eggs and larvae per maternal gallery nor the density of maternal galleries per dm2 of cut log affected the mortality of the eggs, larvae or pupae. The density of reproducing females on cut logs reduced the number of adult females that successfully established maternal galleries. A model, based on the information presented, showed that beetle populations were regulated by density-dependence in the level of female attack, that stabilized the population at 2-3 females/dm2 of cut log.
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