Argentina
| info:eu-repo/semantics/article
Phenotypic selection mosaic for flower length influenced by geographically varying hawkmoth pollinator proboscis length and abiotic environment
Fecha
2019-09Registro en:
Soteras, María Florencia; Rubini Pisano, Malén Alué; Bariles, Julieta Belén; Moré, Marcela; Cocucci, Andrea Arístides; Phenotypic selection mosaic for flower length influenced by geographically varying hawkmoth pollinator proboscis length and abiotic environment; Wiley Blackwell Publishing, Inc; New Phytologist; 9-2019
0028-646X
1469-8137
CONICET Digital
CONICET
Autor
Soteras, María Florencia
Rubini Pisano, Malén Alué
Bariles, Julieta Belén
Moré, Marcela
Cocucci, Andrea Arístides
Resumen
Biotic and abiotic context may affect the intensity of interspecific interactions and subsequently drive locally particular phenotypic selection patterns on interacting traits. We evaluated the geographical variation of matching traits of the brush‐type flowers of Caesalpinia gilliesii and of the proboscis length of its guild of hawkmoth pollinators, as well as their relation with environmental variables. We assessed the geographical variation of interacting traits (style and filament vs. mean proboscis length of the guild of hawkmoths) across seven populations, and estimated phenotypic selection on the plant side. Interacting traits showed similar relationships with environmental variables. Phenotypic selection on the plant side was influenced by proboscis length and by environmental conditions. Mean proboscis length of the guild was shorter than previously recorded for the same study area thus probably shifting the selective optima of flower length. We observed two presumptive coevolutionary cold spots where one‐sided negative directional selection is acting on style length. The lack of selection on the pollinator‐side should be further confirmed. We provided joint evidence, mostly lacking, about the geographical variation of selective pressures on the plant side associated with both proboscis length and abiotic conditions. We suggest that recent environmental change may be shifting floral length optima.