Leaf variation in iridoid glycoside content ofPlantago lanceolata (Plantaginaceae) and oviposition of the buckeye,Junonia coenia (Nymphalidae) |
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| Authors: | Gretchen K. Klockars M. Deane Bowers Barbara Cooney |
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| Affiliation: | (1) University of Colorado Museum and Department of Environmental, Population and Organismic Biology, University of Colorado, Campus Box 334, 80309 Boulder, CO, USA |
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| Abstract: | ![]()
Summary Chemical analysis of each individual leaf of fivePlantago lanceolata (Plantaginaceae) plants showed that iridoid glycoside content increased from undetectable in the oldest photosynthetic leaves to over 9% dry weight in the youngest leaves. The relative proportion of the two iridoid glycosides inP. lanceolata also changed with leaf age: older leaves had significantly more aucubin, whereas the youngest leaves had primarily or solely catalpol. Oviposition tests with femaleJunonia coenia (Nymphalidae) butterflies, showed that they laid most of their eggs on new leaves. |
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| Keywords: | insect-plant interactions intraplant variation chemical variation oviposition iridoid glycoside catalpol aucubin Lepidoptera Junonia coenia Plantaginaceae Plantago lanceolata |
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