Explaining differential herbivory in sun and shade: the case of Aristotelia chilensis saplings

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dc.contributor.authorGuerra, Patricia C.
dc.contributor.authorBecerra, Jose
dc.contributor.authorGianoli, Ernesto
dc.date.accessioned2025-01-21T00:03:04Z
dc.date.available2025-01-21T00:03:04Z
dc.date.issued2010
dc.description.abstractDifferential herbivory in contrasting environments is commonly explained by differences in plant traits. When several plant traits are considered, separate correlation analyses between herbivory and candidate traits are typically conducted. This makes it difficult to discern which trait best explain the herbivory patterns, or to avoid spurious inferences due to correlated characters. Aristotelia chilensis saplings sustain greater herbivory in shaded environments than in open habitats. We measured alkaloids, phenolics, trichomes, leaf thickness and water content in the same plants sampled for herbivory. We conducted a multiple regression analysis to estimate the relationship between herbivory and each plant trait accounting for the effect of correlated traits, thus identifying which trait(s) better explain(s) the differential herbivory on A. chilensis. We also estimated insect abundance in both light environments. Palatability bioassays tested whether leaf consumption by the main herbivore on A. chilensis was consistent with field herbivory patterns. Overall insect abundance was similar in open and shaded environments. While saplings in open environments had thicker leaves, lower leaf water content, and higher concentration of alkaloids and phenolics, no difference in trichome density was detected. The multiple regression analysis showed that leaf thickness was the only trait significantly associated with herbivory. Thicker leaves received less damage by herbivores. Sawfly larvae consumed more leaf tissue when fed on shade leaves. This result is consistent with field herbivory and, together with results of insect abundance, renders unlikely that the differential herbivory in A. chilensis was due to greater herbivory pressure in open habitats.
dc.fuente.origenWOS
dc.identifier.doi10.1007/s11829-010-9099-y
dc.identifier.eissn1872-8847
dc.identifier.issn1872-8855
dc.identifier.urihttps://doi.org/10.1007/s11829-010-9099-y
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95448
dc.identifier.wosidWOS:000284156500003
dc.issue.numero4
dc.language.isoen
dc.pagina.final235
dc.pagina.inicio229
dc.revistaArthropod-plant interactions
dc.rightsacceso restringido
dc.subjectHerbivory
dc.subjectLeaf thickness
dc.subjectLight
dc.subjectMultiple regression
dc.subjectPlant defense
dc.subjectSawfly
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.ods02 Zero Hunger
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa02 Hambre cero
dc.titleExplaining differential herbivory in sun and shade: the case of Aristotelia chilensis saplings
dc.typeartículo
dc.volumen4
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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