Abstract:
UNLABELLED: PREMISE OF THE STUDY:Despite the ecological, economic, and cultural importance of the palm Mauritia flexuosa in Amazonia, knowledge of its reproductive biology is scarce. Previous observations of this species suggested beetles as the probable pollinator, but experimental work to confirm this hypothesis was lacking. • METHODS:We investigated the floral biology and pollination of M. flexuosa in undisturbed forest, undisturbed savanna/forest ecotone, and fragmented savanna within plantations of the exotic tree, Acacia mangium, in northern Brazilian Amazonia. In each habitat, we examined floral biology, combined floral visitor observations with laboratory analyses, and performed anemophily and exclusion experiments. • KEY RESULTS:Fruit set was significantly greater in the visitor exclusion treatment than in the wind + visitor exclusion treatment and significantly lower in the wind + visitor exclusion treatment than the open control, but there was no difference in fruit set between the visitor exclusion treatment and the control. We found no significant difference in pollen dispersal among the three habitats. The presence of A. mangium appears to have no immediate effect on pollination of M. flexuosa, although it may indirectly affect other aspects of this native's reproductive ecology. • CONCLUSIONS:Floral visitors of M. flexuosa are not pollinators. This dioecious palm depends on wind as its primary pollen vector. Wind pollination is not necessarily most effective in open habitats. These findings are important because they re-evaluate traditional assumptions of wind pollination and can improve management strategies of this natural resource in the Amazon.
journal_name
Am J Botjournal_title
American journal of botanyauthors
Khorsand Rosa R,Koptur Sdoi
10.3732/ajb.1200446subject
Has Abstractpub_date
2013-03-01 00:00:00pages
613-21issue
3eissn
0002-9122issn
1537-2197pii
ajb.1200446journal_volume
100pub_type
杂志文章abstract::The evolutionary history of maize (Zea mays subsp. mays) is of general interest because of its economic and scientific importance. Here we show that many cellular traits described previously in developing caryopses of maize are also seen in its wild progenitor teosinte (Zea mays subsp. parviglumis). These features, ea...
journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.0900059
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journal_title:American journal of botany
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journal_title:American journal of botany
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journal_title:American journal of botany
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更新日期:2011-12-01 00:00:00
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journal_title:American journal of botany
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doi:
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更新日期:2006-03-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.1002/ajb2.1119
更新日期:2018-07-01 00:00:00
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journal_title:American journal of botany
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doi:10.3732/ajb.1400272
更新日期:2014-11-01 00:00:00
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journal_title:American journal of botany
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doi:10.3732/ajb.1000463
更新日期:2011-04-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.1002/ajb2.1573
更新日期:2020-12-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.94.5.709
更新日期:2007-05-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章,评审
doi:10.3732/ajb.1100395
更新日期:2012-02-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.2007159
更新日期:2008-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:2011-12-01 00:00:00
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journal_title:American journal of botany
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更新日期:2015-03-01 00:00:00
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doi:
更新日期:2001-09-01 00:00:00
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更新日期:2002-01-01 00:00:00
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更新日期:2014-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:2015-01-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.0800161
更新日期:2008-12-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.93.10.1531
更新日期:2006-10-01 00:00:00
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更新日期:2010-07-01 00:00:00
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journal_title:American journal of botany
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更新日期:2001-09-01 00:00:00
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journal_title:American journal of botany
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更新日期:2002-05-01 00:00:00
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journal_title:American journal of botany
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