Pollination of Adenocalymma bracteatum (Bignoniaceae): floral biology and visitors
Neotrop. entomol
;
39(6): 941-948, nov.-dic. 2010. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-572475
ABSTRACT
Adenocalymma bracteatum is a shrub of dense foliage and yellow flowers, easily found on grasslands areas in Central Brazil. The aim of this study was to determine the reproductive biology and the flower visitors of A. bracteatum in a pasture area nearby Ivinhema city, MS (Brazil). The flowering peak occurs in winter. The flower reflects ultraviolet light. Anthesis begins at 630h, and pollen and nectar are the resources to visitors. We captured 1,038 floral visitors. The bees Apis mellifera (L.), Trigona sp., Trigona spinipes (Fabricius), (Hymenoptera Apoidea) and the ant Cephalotes sp. (Hymenoptera Formicidae) were the main visitors. The reproductive tests indicate that A. bracteatum is self compatible, justifying its expansion in altered environments; however, the largest reproductive success was dependant on cross-pollination and self-pollination, evidencing the pollinators importance. Adenocalymma bracteatum presents melittophilous syndrome and bumblebees were the main pollinators in the area. The correlations observed between the climatic variables and the main pollinator species were low or medium.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Bignoniaceae
/
Flores
/
Polinização
/
Insetos
Limite:
Animais
Idioma:
Inglês
Revista:
Neotrop. entomol
Assunto da revista:
Biologia
/
ZOOLOGIA
Ano de publicação:
2010
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Univ Estadual Paulista/BR
/
Univ Federal da Grande Dourados/BR
/
Univ Federal de Uberlândia/BR
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