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Biología floral y polinizadores de Trichocereus pasacana (Cactaceae) en el Parque Nacional Los Cardones, Argentina

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dc.creatorde Viana, Marta Leonor
dc.creatorOrtega Baes, P.
dc.creatorSaravia, M.
dc.creatorBadano, E. I.
dc.creatorSchlumpberger, B.
dc.date2014-11-24
dc.date.accessioned2016-05-03T15:30:58Z
dc.date.available2016-05-03T15:30:58Z
dc.descriptionSe estudió la floración y polinización de Thrichocereus pasacana en Los Cardones (Salta, Argentina). La mayor prducción de néctar es de las 18 a las 24hs y las abejas Xylocopa sp. actúan como polinizadoreses
dc.descriptionMany columnar cacti are bat pollinated. It has been suggested that this kind of pollination would be more important in tropical than in temperate regions where flowers are open only one night. Thrichocereus pasacana produces big and resistant white flowers. We analyzed flower characteristics, floral cycle, stigmatic receptivity, nectar production, pollen presence and floral visitors in a T. pasacana population at National Park Los Cardones (Salta, Argentina) in November 1997. Flower features were constant between individuals of the population. Flowers start opening at evening and anthesis time is from 18 to 40 hs. The estigma was receptive throughout the floral cycle. Anther dehiscence occurs with flower opening. Nectar production was highest between 18 to 24hs. Although T. pasacana are open during the night, floral visitors are diurnal. The most frequent was Xylocopa sp. In the study area, nectarivorous bats were not detected. The morphological features of T. pasacana flowers were similar but bigger compared to other columnar cacti. Anthesis time was also longer while nectar production was lower. T. pasacana pollination at National Park Los Cardones is done by bees.en-US
dc.formatapplication/pdf
dc.identifierhttp://revistas.ucr.ac.cr/index.php/rbt/article/view/16928
dc.identifier.urihttps://hdl.handle.net/10669/26987
dc.languagespa
dc.publisherUniversidad de Costa Ricaen
dc.rightsacceso abierto
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 49 (1) March 2001; 279-285en
dc.sourceRevista de Biología Tropical/International Journal of Tropical Biology and Conservation; Vol. 49 (1) March 2001; 279-285es
dc.sourceRevista Biología Tropical; Vol. 49 (1) March 2001; 279-285pt-PT
dc.source2215-2075
dc.source0034-7744
dc.subjecttrichocereusen
dc.subjectcactaceaeen
dc.subjectcolumnar cactien
dc.subjectfloral biologyen
dc.subjectpollinationen
dc.subjectbeesen
dc.titleBiología floral y polinizadores de Trichocereus pasacana (Cactaceae) en el Parque Nacional Los Cardones, Argentinaes
dc.titleBiología floral y polinizadores de Trichocereus pasacana (Cactaceae) en el Parque Nacional Los Cardones, Argentinaen
dc.typeartículo original

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Revista de Biología Tropical