Abstract:
PREMISE OF THE STUDY:Phenological mismatch has received attention in plant-pollinator interactions, but less so in seed dispersal mutualisms. We investigated whether the seasonal availability of myrmecochorous seeds is well matched to the seasonal activity patterns of seed-dispersing ants. METHODS:We compared seasonal timing of seed removal by a keystone seed-dispersing ant, Aphaenogaster rudis, and fruit dehiscence of several species of plants whose seeds it disperses in a deciduous forest in southern Ontario, Canada. We examined the timing of elaiosome "robbing" by the nonnative slug Arion subfuscus and tested whether seed removal by ants declines in response to supplementation with additional elaiosome-bearing seeds (ant "satiation"). KEY RESULTS:Seed removal from experimental depots peaked early in the season for all plant species and correlated with temperature. In contrast, elaiosome robbing by slugs increased late in the season and thus may disproportionately affect plants with late-dehiscing fruits. Ant colonies removed seeds at similar rates regardless of seed supplementation, indicating that satiation likely does not impact seasonal patterns of seed dispersal in this system. Fruits of the five myrmecochorous plant species in our study dehisced at discrete intervals throughout the season, with minimal overlap among species. Peak dehiscence did not overlap with peak seed removal for any plant species. CONCLUSIONS:Fruit dehiscence of myrmecochorous plants and peak ant seed dispersal activity occur asynchronously. Whether future climate warming will shift ant and plant phenologies in ways that have consequences for seed dispersal remains an open question.
journal_name
Am J Botjournal_title
American journal of botanyauthors
Gordon SCC,Meadley-Dunphy SA,Prior KM,Frederickson MEdoi
10.1002/ajb2.1214subject
Has Abstractpub_date
2019-01-01 00:00:00pages
71-80issue
1eissn
0002-9122issn
1537-2197journal_volume
106pub_type
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.1100546
更新日期:2012-07-01 00:00:00
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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:2015-08-01 00:00:00
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abstract::Fluorescence in situ hybridization (FISH) of a large-insert genomic clone, BAC 22B2, previously suggested that Sorghum bicolor (2n = 20) has the tetraploid architecture A(b)A(b)B(b)B(b). Here, we report on BAC 22B2 subclone pCEN38 (1047-bp insert) as related to sorghum and sugarcane. Mitotic FISH of six different subc...
journal_title:American journal of botany
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更新日期:2012-02-01 00:00:00
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abstract::Sphenobaiera huangii (Sze) Hsü is typical Early Mesozoic fossil foliage of Ginkgoales in China. It has been recorded from the Upper Triassic to the Lower Jurassic. The cuticular anatomy is investigated based on material from the type locality, Lower Jurassic Hsiangchi Formation, Zigui County, Hubei Province. The speci...
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doi:10.3732/ajb.92.4.709
更新日期:2005-04-01 00:00:00
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journal_title:American journal of botany
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更新日期:2009-09-01 00:00:00
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journal_title:American journal of botany
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更新日期:1983-01-01 00:00:00
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更新日期:2012-04-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.93.9.1265
更新日期:2006-09-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.1300269
更新日期:2014-04-01 00:00:00
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journal_title:American journal of botany
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doi:
更新日期:2001-09-01 00:00:00
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更新日期:2010-04-01 00:00:00
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journal_title:American journal of botany
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更新日期:2007-12-01 00:00:00
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journal_title:American journal of botany
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更新日期:2007-03-01 00:00:00
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journal_title:American journal of botany
pub_type: 杂志文章
doi:10.3732/ajb.1200630
更新日期:2013-06-01 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:2002-11-01 00:00:00
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更新日期:2001-11-01 00:00:00
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更新日期:2010-01-01 00:00:00
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