IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Nectar sugar composition and flower visitors for the naturalized exotic Lantana camara (Verbenaceae) at Central Argentina.
Autor/es:
TORRES, C; GALETTO, L.
Revista:
The International Journal of Plant Reproductive Biology
Editorial:
The Society of Plant Reproductive Biologists
Referencias:
Año: 2014 vol. 6 p. 174 - 180
ISSN:
0975-4296
Resumen:
The aim of this work is to describe and
quantify the flower visitors of the invasive Lantana camara L. (Verbenaceae)
at the Chaco forest, and to analyze possible relationships
between nectar sugar composition and the main pollinators for this species. Nectar volume, sugar
concentration and sugar composition were measured in six different populations
of the naturalized exotic L. camara in central Argentina. Quantitative nectar sugar
composition was determined and compared between populations. In general, nectar
sugar concentration ranged between 25-28% and volume per flower was very low
(<1µL). Nectar sugars are glucose, fructose and sucrose for all populations,
but hexoses clearly predominate over sucrose. Different insects were registered
visiting the inflorescences. The more frequent pollinators were many species of
diurnal butterflies, honeybees and bumblebees. A diverse insect assemblage visiting
flowers of L. camara guarantees a high
fruit production that can be related with the invasion process of this species
in the Chaco region from central Argentina.