St. Johnswort Biological Control

My undergraduate honors thesis at Cornell University explored the interactions of native and invasive St. Johnswort with an introduced biological control agent, the beetle Chrysolina quadrigemina. I conducted this work in the Agrawal lab, collaborating closely with then-PhD student Susan Cook-Patton. The resulting article is published in PeerJ [PDF].

Native St. Johnswort, Hypericum punctatum.
Native St. Johnswort, Hypericum punctatum.
Invasive St. Johnswort, Hypericum perforatum.
Invasive St. Johnswort, Hypericum perforatum.

Experimental setup in a Tompkins County, New York field.
Experimental setup in a Tompkins County, New York field.
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