Susanne Dobler, Patrick Mardulyn, Jacques M. Pasteels, Martine Rowell-Rahier, Host-Plant Switches and the Evolution of Chemical Defense and Life History in the Leaf Beetle Genus Oreina, Evolution, Vol. 50, No. 6 (Dec., 1996), pp. 2373-2386
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Dobler et al. (1996) studied this question.
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