dc.creator | Valdivia, Carlos E. | |
dc.creator | Niemeyer, Hermann M. | |
dc.date.accessioned | 2018-12-20T14:11:14Z | |
dc.date.available | 2018-12-20T14:11:14Z | |
dc.date.created | 2018-12-20T14:11:14Z | |
dc.date.issued | 2005 | |
dc.identifier | New Zealand Journal of Ecology, Volumen 29, Issue 2, 2018, Pages 321-324 | |
dc.identifier | 01106465 | |
dc.identifier | https://repositorio.uchile.cl/handle/2250/154517 | |
dc.description.abstract | Assessments of the effects of invertebrate herbivores on high-altitude plants have seldom taken into account both mutualistic and antagonistic interactions. To evaluate the effect of herbivores (antagonists) and pollinators (mutualists) on the female reproductive success of the high-Andean perennial herb Alstroemeria umbellata, we separately and simultaneously excluded aphids (herbivores), and bees and bumblebees (pollinators) in a 2×2 factorial design. In flowers with pollinators excluded, aphids did not reduce seed set per flower (i.e., a direct effect). However, in flowers exposed to pollinators, aphids reduced seed set by 1.7 times (i.e., a pollinator-mediated indirect effect). Likewise, both types of animals exerted non-additive effects on maternal fecundity. These results suggest a modulating role for herbivores on the selection pressures exerted by pollinators on A. umbellata. © New Zealand Ecological Society. | |
dc.language | en | |
dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | |
dc.source | New Zealand Journal of Ecology | |
dc.subject | Aphids | |
dc.subject | Direct effect | |
dc.subject | Indirect effect | |
dc.subject | Pollinators | |
dc.subject | Seed set | |
dc.title | Reduced maternal fecundity of the high Andean perennial herb Alstroemeria umbellata (Alstroemeriaceae) by aphid herbivory | |
dc.type | Artículo de revista | |