Artículos de revistas
The Pollination Of Stenorrhynchos Lanceolatus (aublet) L. C. Rich. (orchidaceae: Spiranthinae) By Hummingbirds In Southeastern Brazil
Registro en:
Plant Systematics And Evolution. , v. 223, n. 03/04/15, p. 221 - 227, 2000.
3782697
2-s2.0-0033834168
Autor
Singer R.B.
Sazima M.
Institución
Resumen
Hummingbird pollination is documented for a natural population of Stenorrhynchos lanceolatus Aublet. L. C. Rich. occurring in Rio de Janeiro State, southeastern Brazil. At the study site the plants are pollinated by Phaethornis eurynome (Phaethorninae), Thalurania glaucopis (females only) and Leucochloris albicollis (Trochilinae). The plants offer nectar as a reward and the pollinaria become stuck to the surface of the hummingbird's bill while it is probing the flowers. The orchid population received a few (0-4) hummingbird visits per day, with about 83% of the flowers being pollinated. In spite of the low frequency of visits, the granular structure of the pollinarium plus the behaviour of the most frequent pollinators, which tend to visit all the fresh-looking flowers of each inflorescence, a very high fruiting success was promoted. Experimental evidence suggests that the pollinaria may remain up to 6.30 hours on the hummingbird's bill, enhancing the chances of cross-pollination and long-distance pollen flow. 223 03/04/15 221 227 Ackermann, J.D., (1995), An orchid flora of Puerto Rico and the Virgin Islands. Mem. of New York Bot. Gard. Bronx 73. New YorkAckermann, J.D., Rodriguez-Robles, J.A., Melendez, E.J., A meager offering of nectar by an epiphytic orchid is better than nothing (1994) Biotropica, 26, pp. 44-49 Balogh, P., Generic redefinitions in the subtribe Spiranthinae (Orchidaceae) (1982) Am. J. Bot., 69, pp. 1119-1132 Catling, R.M., Notes on the breeding system of Sacoila lanceolata (Aublet) Garay (Orchidaceae) (1987) Ann. Miss. Bot. Gard., 74, pp. 58-68 Cocucci, C.A., Fertilizacion en orquideas. Anales de la Academia Nacional de Ciencias Exactas (1981) Buenos Aires, 33, pp. 1-47 Dressler, R.L., (1981), The orchids: natural history and classification. Harvard Univ. Press, CambridgeDressler, R.L., (1993), Phylogeny and classification of the orchid family. Dioscorides Press, PortlandGaletto, L., Bernardello, G., Rivera, G.L., Nectar, nectaries, flower visitors and breeding systems in five terrestrial Orchidaceae from Central Argentina (1997) J. Plant Res., 110, pp. 393-403 Hoehne, F.C., Orchidaceas (1945), Hoehne F. C. (ed.) Flora Brasilica. Vol. XII. Instituto de Botanica, Sao PauloJohnson, S.D., Bird pollination in South African species of Satyrium (Orchidaceae) (1996) Plant Syst. Evol., 203, pp. 91-98 Miller, D., Warren, R., (1996), Orquideas do Alto da Serra. Salamandra Editora, Rio de JaneiroNeiland, M.R., Wilcock, C.C., Fruit set, nectar reward, and rarity in the Orchidaceae (1998) Am. J. Bot., 85 (12), pp. 1657-1671 Nilsson, L., Rabakonandrianina, A., Razananarivo, E., Randriamanindry, R., Long pollinia on eyes: Hawkmoth pollination of Cynorkis uniflora Lindl. (Orchidaceae) in Madagascar (1992) Bot. J. Linn. Soc., 109, pp. 145-160 Van der Pijl, L., Dodson, C.H., (1966), Orchid Flowers: their pollination and evolution. University of Miami Press, Coral GablesRasmussen, F.N., The gynostemium of the neottioid orchids (1982) Opera Bot., 65, pp. 1-96 Sazima, I., Buzato, S., Sazima, M., An assemblage of hummingbird-pollinated flowers in a montane forest in southeastern Brazil (1996) Bot. Acta., 109, pp. 149-160 Singer, R.B., Sazima, M., The pollination mechanism in the 'Pelexia alliance' (Orchidaceae: Spiranthinae) (1999) Bot. J. Linn. Soc., 131 (3), pp. 249-262