Mostrar el registro sencillo del ítem
dc.contributor.author
Quintero, Carolina
dc.contributor.author
Corley, Juan Carlos
dc.contributor.author
Aizen, Marcelo Adrian
dc.date.available
2017-01-26T20:42:32Z
dc.date.issued
2015-01
dc.identifier.citation
Quintero, Carolina; Corley, Juan Carlos; Aizen, Marcelo Adrian; Weak trophic links between a crab-spider and the effective pollinators of a rewardless orchid; Elsevier Masson; Acta Oecologica; 62; 1-2015; 32-39
dc.identifier.issn
1146-609X
dc.identifier.uri
http://hdl.handle.net/11336/12039
dc.description.abstract
Sit and wait predators hunting on flowers are considered to be exploiters of plantepollinator mutualisms. Several studies have shown that plantepollinator interactions can be highly susceptible to the impact of a third trophic level, via consumptive (direct) and non-consumptive (indirect) effects that alter pollinator behavior and, ultimately, plant fitness. However, most flowering plants attract a wide array of flower visitors, from which only a subset will be effective pollinators. Hence, a negative effect of an ambush predator on plant fitness should be expected only when: (i) the effective pollinators are part of the predators´ diet and/or (ii) the non-consumptive effects of predator presence (e.g. dead prey) alter the behavior of effective pollinators and pollen movement among individual plants. We analyzed the direct and indirect effects of a crab-spider (Misumenops pallidus), on the pollination and reproductive success of Chloraea alpina, a Patagonian rewardless orchid. Our results indicate that most of the flower visitors do not behave as effective pollinators and most effective pollinators were not observed as prey for the crabspider. In terms of non-consumptive effects, inflorescences with and without spiders and/or dead-prey did not vary the frequency of flower visitors, nor pollinia removal or deposition. Hence, it is not surprising that M. pallidus has a neutral effect on pollinia removal and deposition as well as on fruit and seed set. Similar to other rewardless orchids, the low reproductive success of C. alpina (~6% fruit set) was associated with the limited number of visits by effective pollinators. Negative top-down effects of a flower-visitor predator on plant pollination may not be anticipated without studying the direct and indirect effects of this predator on the effective pollinators. In pollination systems where effective pollinators visited flowers erratically, such as in deceptive orchids, we expect weak or no effect of predators on plant fitness.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Masson
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Chloraea Alpina
dc.subject
Deceptive Strategy
dc.subject
Flower Visitors
dc.subject
Non-Consumptive Effects
dc.subject
Sir-And-Wait Predator
dc.subject
Thomisidae
dc.subject.classification
Ecología
dc.subject.classification
Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Weak trophic links between a crab-spider and the effective pollinators of a rewardless orchid
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-12-12T14:31:34Z
dc.journal.volume
62
dc.journal.pagination
32-39
dc.journal.pais
Francia
dc.journal.ciudad
París
dc.description.fil
Fil: Quintero, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio de Ecotono; Argentina
dc.description.fil
Fil: Corley, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Patagonia Norte. Estación Experimental Agropecuaria San Carlos de Bariloche; Argentina
dc.description.fil
Fil: Aizen, Marcelo Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Patagonia Norte. Instituto de Investigación En Biodiversidad y Medioambiente; Argentina. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Laboratorio de Ecotono; Argentina
dc.journal.title
Acta Oecologica
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1146609X14001271
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.actao.2014.11.003
Archivos asociados