Artículo
Patrones de herbivoría en Vassobia breviflora (Solanaceae): variación en el daño foliar y selección natural mediada por herbívoros
Título:
Patterns of herbivory in Vassobia breviflora (Solanaceae): variation in foliar damage and natural selection mediated by herbivorous.
Valoy, Mariana Eugenia
; Ordano, Mariano Andrés
; Bernacki, Facundo; Palacio, Facundo Xavier
; Lopez Acosta, Juan Carlos; Varela, Omar
Fecha de publicación:
10/2018
Editorial:
Universidad de Costa Rica
Revista:
Revista de Biología Tropical
ISSN:
0034-7744
e-ISSN:
2215-2075
Idioma:
Español
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Herbivore mediated-selection shapes the evolution of defensive plant traits. Knowledge about the role of herbivores as mediators of selection is scarce and even more if herbivore functional groups are considered. The objectives of this work were (1) to describe the variation in foliar traits between populations and both between and intra-plants within a population, (2) to explore the relationship between the variation in the herbivory level and foliar traits, (3) to determine the relationship between leaf traits and damage patterns and (4) estimate the selection regimes by different herbivore functional groups. We con-ducted this study in four populations of Vassobia breviflora in Northwestern Argentina (Yungas). The foliar traits considered were size, leaf area (af), shape (leaf length / width ratio; laf) and proportion of leaf area removed (pafr) (N = 1 582 leaves, 57 plants). The herbivores consumed 15.6 % of the leaf area and 76.8 % of the variation in the pafr occurred at the sub-individual level. The damage pattern was dominated by cutter herbivores (70 %), followed by a dotted herbivory pattern (22 %), mixed 5 % and 1 % miner. Nonlinear selection was detected for laf (γii = -0.180; EE = 0.76; P < 0.05), and correlational selection between the cutter damage and af (γij = -1.297; SE = 0.62; P < 0.05) and between the dotted damage and af (γij = -1.130; SE = 0.76; P < 0.05). Natural selection favored plants with small leaves and high foliar removal and large leaves with less damage and selection against larger leaves with greater damage was detected. In addition, deduced from the relationship between the damage type and the relative fitness, the selection would favor the dotted damage over the cutter one. The plants would resolve the conflict with the herbivores according to the damage type and natural selection would regulate the foliar display as a strategy to deal with the herbivore diversity.
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Identificadores
Colecciones
Articulos(CCT - LA PLATA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - LA PLATA
Articulos(UEL)
Articulos de UNIDAD EJECUTORA LILLO
Articulos de UNIDAD EJECUTORA LILLO
Citación
Valoy, Mariana Eugenia; Ordano, Mariano Andrés; Bernacki, Facundo; Palacio, Facundo Xavier; Lopez Acosta, Juan Carlos; et al.; Patrones de herbivoría en Vassobia breviflora (Solanaceae): variación en el daño foliar y selección natural mediada por herbívoros; Universidad de Costa Rica; Revista de Biología Tropical; 66; 4; 10-2018; 1-18
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