Abstract:
PREMISE OF THE STUDY:Herbivory can affect a plant's fitness in a variety of ways, including modifying the biotic interactions of the plant. In particular, when herbivory influences floral display, we hypothesize that pollinator visitation will be altered accordingly. Here we studied the indirect effects of feeding by two beetles, Neogalerucella calmariensis and N. pusilla, released as a biological control, on plant-pollinator interactions and fitness in the invasive plant, purple loosestrife (Lythrum salicaria). METHODS:Two herbivory treatments (ambient and simulated) were applied to plants in a naturally occurring population of purple loosestrife. During flowering, traits of plants in the treatment and control groups were recorded. Data on pollinator visitation behavior was then collected after intense larval herbivory had ended. KEY RESULTS:Plants exposed to herbivory treatments produced more flowers and inflorescences but flowered significantly later than those in the control group. Moreover, we found a significant, positive association of herbivory with the number of flowers probed by bumblebees and with the number of times a foraging pollinator moved among inflorescences on a single plant. No differences in female fitness (fruit or seed production) were detected. CONCLUSIONS:We conclude that herbivore-mediated differences in floral display traits impacted pollinator visitation behavior. However, as we discuss, differences in pollinator visitation did not translate into detectable differences in female reproductive success. We postulate that herbivory could influence other unmeasured aspects of fitness, such as seed quality or the number of seeds sired.
journal_name
Am J Botjournal_title
American journal of botanyauthors
Russell-Mercier JL,Sargent RDdoi
10.3732/ajb.1500043subject
Has Abstractpub_date
2015-05-01 00:00:00pages
661-8issue
5eissn
0002-9122issn
1537-2197pii
ajb.1500043journal_volume
102pub_type
杂志文章abstract:PREMISE:Understanding plant hydraulic functioning and water balance during drought has become key in predicting species survival and recovery. However, there are few insightful studies that couple physiological and morphological attributes for many ecosystems, such as the vulnerable Tropical Montane Cloud Forests (TMCF...
journal_title:American journal of botany
pub_type: 杂志文章
doi:10.1002/ajb2.1356
更新日期:2019-10-01 00:00:00
abstract::Senna (Leguminosae) is a large, widespread genus that includes species with enantiostylous, asymmetric flowers and species with extrafloral nectaries. Clarification of phylogenetic relationships within Senna based on parsimony analyses of three chloroplast regions (rpS16, rpL16, and matK) provides new insights on the ...
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journal_title:American journal of botany
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abstract::Recent surveys of seed coat morphology in Lobelioideae (Campanulaceae) have demonstrated the systematic utility of such data in the subfamily and led to a revision of the supraspecific classification of Lobelia. Expanding upon these studies, we examined via scanning electron microscopy 41 seed accessions, emphasizing ...
journal_title:American journal of botany
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pub_type: 杂志文章
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更新日期:2002-08-01 00:00:00
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pub_type: 杂志文章
doi:10.3732/ajb.91.6.850
更新日期:2004-06-01 00:00:00
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pub_type: 杂志文章
doi:10.3732/ajb.1100066
更新日期:2011-08-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.92.8.1294
更新日期:2005-08-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.94.10.1630
更新日期:2007-10-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.92.2.337
更新日期:2005-02-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.1500439
更新日期:2016-05-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2006-10-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.1002/ajb2.1233
更新日期:2019-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:2012-11-01 00:00:00
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更新日期:2012-05-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
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更新日期:2016-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:2002-02-01 00:00:00
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更新日期:2010-05-01 00:00:00