Differences in effects of pyrrolizidine alkaloids on five generalist insect herbivore species
Author
dc.contributor.author
Macel, Mirka
Author
dc.contributor.author
Bruinsma, Maaike
Author
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Dijkstra, Sander M.
Author
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Ooijendijk, Tessa
Author
dc.contributor.author
Niemeyer, Hermann M.
Author
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Klinkhamer, Peter G.L.
Admission date
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2018-12-20T14:10:53Z
Available date
dc.date.available
2018-12-20T14:10:53Z
Publication date
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2005
Cita de ítem
dc.identifier.citation
Journal of Chemical Ecology, Volumen 31, Issue 7, 2018, Pages 1493-1508
Identifier
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00980331
Identifier
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10.1007/s10886-005-5793-0
Identifier
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https://repositorio.uchile.cl/handle/2250/154474
Abstract
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The evolution of the diversity in plant secondary compounds is often thought to be driven by insect herbivores, although there is little empirical evidence for this assumption. To investigate whether generalist insect herbivores could play a role in the evolution of the diversity of related compounds, we examined if (1) related compounds differ in their effects on generalists, (2) there is a synergistic effect among compounds, and (3) effects of related compounds differed among insect species. The effects of pyrrolizidine alkaloids (PAs) were tested on five generalist insect herbivore species of several genera using artificial diets or neutral substrates to which PAs were added. We found evidence that structurally related PAs differed in their effects to the thrips Frankliniella occidentalis, the aphid Myzus persicae, and the locust Locusta migratoria. The individual PAs had no effect on Spodoptera exigua and Mamestra brassicae caterpillars. For S. exigua, we found indications for syne