Impact of Forpus xanthopterygius (Spix, 1824) (Aves, Psittacidae) on flowers of Handroanthus serratifolius (Vahl.) S. O. Grose (Bignoniaceae)

Brazilian Journal of Biology

C. Melo²  Ad. Oliveira¹  Ca. Borges¹  G. Ribeiro¹  J. Tavares¹ 

[1] ,Universidade Federal de Uberlândia Instituto de Biologia Uberlândia MG ,Brazil

关键词: Forpus xanthopterygius;    predation;    flowers;    Handroanthus serratifolius;    Forpus xanthopterygius;    predação;    flores;    Handroanthus serratifolius;   

DOI  :  10.1590/S1519-69842009000500020

来源: SciELO

【 摘 要 】

Handroanthus serratifolius produces flowers during the dry season in the Cerrado biome, and it may be an important food source to some bird species. For Psittacidae species, like Forpus xanthopterygius, flowers are important in their diet. This study intended to characterize the behavior of F.xanthopterygius and evaluate the damage to the flowering and in the reproduction of H. serratifolius. Four individuals of H. serratifolius were observed for 60 hours to register size of groups, the time and duration of visit, and the number of flowers predated by F.xanthopterygius. The groups that visited the plants had between 2 and 12 individuals. The mean time of visits was 60.31 minutes (±22.29). The size of groups was correlated to number of flowers predated and was influenced by number of flowers offered. During the flowering, each H. serratifolius individual loses approximately 1,052 flowers per week.

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