Resource partitioning and overlap in three sympatric species of Ips bark beetles (Coleoptera: Scolytidae)

The bark beetles Ips pini, I. perroti, and I. grandicollis are sympatric in pine forests of the north-central United States. They share the same limited phloem resource and often coexist within the same host trees. We tested whether phloem resources are partitioned in time and space by measuring spa...

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