%0 Journal Article
%T Importancia de los polinizadores en la reproducci¨®n de seis especies de subp¨¢ramo del pico Naiquat¨¢ (parque nacional el ¨¢vila-Venezuela)
%A Barrios
%A Yeni
%A Ramirez
%A Nelson
%A Ram¨ªrez
%A Eduardo
%A S¨¢nchez
%A Eduardo
%A Del Castillo
%A Rogelio
%J Acta Bot¨¢nica Venezuelica
%D 2010
%I Fundaci¨®n Instituto Bot¨¢nico de Venezuela Dr. Tob¨ªas Lasser
%X relevance of pollinators in the reproduction of six plant species from subp¨¢ramo was determined in peak naiguat¨¢. aspects of floral biology, species visitors network and the faculty to produce fruits and seeds without pollinators contribution were studied from each species. the flowers of the studied species present attraction structures, floral rewards and high pollen/ovule ratio, which indicated cross pollination. the floral visitors included 14 insect species belonging to the hymenoptera, coleoptera, diptera and lepidoptera orders. the rate of visit was high in comparison with other high mountain plant communities. bees were the most frequent visitors with most abundant pollen loads. specificity levels of plants and animals were low and resulted in a high proportion of weak interactions (conectance = 0.51).spontaneous reproduction test indicated that reproduction in libanothamnus neriifolius,monnina phytolaccaefolia, solanum americanum, arcytophyllum nitidum and castilleja fissifolia was significantly dependent from pollinators£¿ activity, whereas it was independent in phytolacca icosandra. however, pollinators have a fundamental role in the reproduction of the six species, even of p. icosandra, that though presents alternative mechanisms to cross pollination, significantly depends from floral visitors for a more efficient seed set.
%K conectance
%K floral biology
%K fruit and seed set
%K pollen-ovule rate
%K pollination
%K spontaneous reproduction
%K venezuela.
%U http://www.scielo.org.ve/scielo.php?script=sci_abstract&pid=S0084-59062010000200004&lng=en&nrm=iso&tlng=en