| the pollination of bromelia antiacantha (bromeliaceae) in southeastern brazil: ornithophilous versus melittophilous features. | bromelia antiacantha flowered from december to february and during this period the central leaves and bracts displayed a bright red colour. the inflorescence bears 150-350 flowers, with 10-35 flowers opening per day over 4-5 days. the flowers are dark magenta coloured with white margins, tubular-shaped with a wide opening, and their stigma is situated below the anthers. anthesis began around 4:00 h and flowers lasted approximately 15 h. the highest nectar volume and sugar concentration occurred ... | 2005 | 16025414 |
| reproductive phenology and sharing of floral resource among hummingbirds (trochilidae) in inflorescences of dahlstedtia pinnata (benth.) malme. (fabaceae) in the atlantic forest. | the purpose of this study was to investigate the reproductive phenology and sharing of floral resource (nectar) of dahlstedtia pinnata (benth.) malme. (fabaceae), endemic of atlantic forest, among hummingbirds. for the phenology, we looked at the presence of reproductive structures in the plants, and for floral resource sharing, the frequency of potential pollinators and foraging behaviors were examined. this study was conducted in pedra branca state park, in state of rio de janeiro, in a dense ... | 2014 | 25590708 |
| reproductive phenology and sharing of floral resource among hummingbirds (trochilidae) in inflorescences of dahlstedtia pinnata (benth.) malme. (fabaceae) in the atlantic forest. | the purpose of this study was to investigate the reproductive phenology and sharing of floral resource (nectar) of dahlstedtia pinnata (benth.) malme. (fabaceae), endemic of atlantic forest, among hummingbirds. for the phenology, we looked at the presence of reproductive structures in the plants, and for floral resource sharing, the frequency of potential pollinators and foraging behaviors were examined. this study was conducted in pedra branca state park, in state of rio de janeiro, in a dense ... | 2014 | 25387391 |
| the feather mites (acari, astigmata) of the violet-capped woodnymph, thalurania glaucopis (gmelin) (aves, trochilidae), with descriptions of three new species. | six feather mites of the violet-capped woodnymph, thalurania glaucopis are herein reported: allodectes sejugaspis sp. n., a. thaluraniae sp. n., trochilodectes brevipenis sp. n., toxerodectes biscutatus park & atyeo (proctophyllodidae), and two unidentified species from the families analgidae (protalginae, genus protalges) and ptyssalgidae (genus ptyssalges). these are the first feather mites to be reported from this host. | 2013 | 24758828 |
| parasitoidism of chalcidid wasps (hymenoptera, chalcididae) on philornis sp. (diptera, muscidae). | philornis meinert larvae are known as parasites of birds, with coprophagous, semi-hematophagous or hematophagous habits. biological data of the larvae of the fifty described species are still scarcely known. here we describe some aspects of the parasitism of a species of philornis on thalurania glaucopis gmelin (trochilidae) and record two species of chalcididae (hymenoptera) parasitoids, conura annulifera (walker, 1864) and brachymeria podagrica (fabricius, 1787), reared from philornis puparia. | 2006 | 16862311 |
| functional aspects of floral nectar secretion of ananas ananassoides, an ornithophilous bromeliad from the brazilian savanna. | several members of bromeliaceae show adaptations for hummingbird pollination in the neotropics; however, the relationships between floral structure, nectar production, pollination and pollinators are poorly understood. the main goal of this study was to analyse the functional aspects of nectar secretion related to interaction with pollinators by evaluating floral biology, cellular and sub-cellular anatomy of the septal nectary and nectar composition of ananas ananassoides, including an experimen ... | 2012 | 22455992 |
| bimodal pollination system of the bromeliad aechmea nudicaulis involving hummingbirds and bees. | in order to compare the effectiveness of birds and insects as pollinators, we studied the floral biology of the bromeliad aechmea nudicaulis (l.) grisebach in the biome of the atlantic rain forest, southern brazil. on santa catarina island, flowering extends from mid-september to the end of december, with diurnal anthesis. the reproductive system is obligatory xenogamy, thus pollinator-dependent. flowers secrete 31.84 μl of nectar per day, with a mean sugar concentration of 23.2%. highest nectar ... | 2011 | 21134086 |