The title says it all.

Work from a recent collaboration is out in the journal Ecology titled Latitudinal gradients in herbivory on Oenothera biennis vary according to herbivore guild and specialization. This research was led by PhD student Daniel Anstett and Prof. Marc Johnson from the University of Toronto-Mississauga, who set out to test the latitudinal herbivory-defense hypothesis (LHDH) using Oenothera biennis L. (Onagraceae) as a study species. The running hypothesis is that herbivory and plant defenses increase toward lower latitudes. They did a lot of work sampling and quantifying herbivory at sites located across the entire species’ range. The results show that latitudinal patterns vary dramatically among herbivore species, highlighting the lack of generality of the LHDH. This work points to the need to better understand the mechanisms driving such diverse patterns. Looking forward, understanding the influence of  climate-mediated changes on biotic interactions is an especially interesting area of research from both theoretical and applied perspectives. Enjoy the read!

By User:Kilom691 [GFDL (, CC-BY-SA-3.0 ( or Public domain], via Wikimedia Commons
Botanical llustration of Oenothera biennis (Evening primrose)

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