Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae)

Background: In mutualistic interactions of fleshy-fruited plants and seed-dispersing birds, dispersers act as natural selection agents on fruit display traits. Bird-mediated phenotypic selection on maternal and seed level plant traits has been postulated to be uncoupled. However, this key step in th...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 2014
Materias:
Co-evolution
Maternal and offspring levels
Mutualism
Natural selection
Phenotypic selection
Plant-animal interactions
Seed dispersal
Selection gradients
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15220613_v16_n1_p51_Palacio
http://hdl.handle.net/20.500.12110/paper_15220613_v16_n1_p51_Palacio
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_15220613_v16_n1_p51_Palacio
record_format dspace
spelling paper:paper_15220613_v16_n1_p51_Palacio2023-06-08T16:19:20Z Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae) Co-evolution Maternal and offspring levels Mutualism Natural selection Phenotypic selection Plant-animal interactions Seed dispersal Selection gradients Background: In mutualistic interactions of fleshy-fruited plants and seed-dispersing birds, dispersers act as natural selection agents on fruit display traits. Bird-mediated phenotypic selection on maternal and seed level plant traits has been postulated to be uncoupled. However, this key step in the understanding of the co-evolutionary processes has seldom been explored. Goals: To study the pattern and strength of phenotypic selection exerted by birds on two different plant life stages: maternal (mean and within-plant variation of fruit traits) and offspring (individual seed size) levels. Organism: The one-seeded fleshy-fruited tree, Celtis ehrenbergiana (Klotzsch) Liebm. Field site: Natural forests of the Biosphere Reserve 'Parque Costero del Sur', near the shore of the Río de La Plata, Buenos Aires, Argentina. Methods: We sampled 24 randomly selected trees. For each focal tree, we recorded bird visits and behaviour, and fruit-related traits. Dispersed seeds were collected at the same location. Results: At the maternal level, birds exerted positive directional selection on mean sugar concentration. Sub-individual variation in fruit traits was not observed to be a target of bird-mediated selection. At the individual seed level, birds exerted positive directional selection on seed size. Conclusions: While birds exert selection pressures on reward-related traits, plants obtain an advantage through a larger seed size. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15220613_v16_n1_p51_Palacio http://hdl.handle.net/20.500.12110/paper_15220613_v16_n1_p51_Palacio
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Co-evolution
Maternal and offspring levels
Mutualism
Natural selection
Phenotypic selection
Plant-animal interactions
Seed dispersal
Selection gradients
spellingShingle Co-evolution
Maternal and offspring levels
Mutualism
Natural selection
Phenotypic selection
Plant-animal interactions
Seed dispersal
Selection gradients
Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae)
topic_facet Co-evolution
Maternal and offspring levels
Mutualism
Natural selection
Phenotypic selection
Plant-animal interactions
Seed dispersal
Selection gradients
description Background: In mutualistic interactions of fleshy-fruited plants and seed-dispersing birds, dispersers act as natural selection agents on fruit display traits. Bird-mediated phenotypic selection on maternal and seed level plant traits has been postulated to be uncoupled. However, this key step in the understanding of the co-evolutionary processes has seldom been explored. Goals: To study the pattern and strength of phenotypic selection exerted by birds on two different plant life stages: maternal (mean and within-plant variation of fruit traits) and offspring (individual seed size) levels. Organism: The one-seeded fleshy-fruited tree, Celtis ehrenbergiana (Klotzsch) Liebm. Field site: Natural forests of the Biosphere Reserve 'Parque Costero del Sur', near the shore of the Río de La Plata, Buenos Aires, Argentina. Methods: We sampled 24 randomly selected trees. For each focal tree, we recorded bird visits and behaviour, and fruit-related traits. Dispersed seeds were collected at the same location. Results: At the maternal level, birds exerted positive directional selection on mean sugar concentration. Sub-individual variation in fruit traits was not observed to be a target of bird-mediated selection. At the individual seed level, birds exerted positive directional selection on seed size. Conclusions: While birds exert selection pressures on reward-related traits, plants obtain an advantage through a larger seed size.
title Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae)
title_short Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae)
title_full Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae)
title_fullStr Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae)
title_full_unstemmed Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae)
title_sort bird-mediated selection on fruit display traits in celtis ehrenbergiana (cannabaceae)
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15220613_v16_n1_p51_Palacio
http://hdl.handle.net/20.500.12110/paper_15220613_v16_n1_p51_Palacio
_version_ 1768543341645922304

Ejemplares similares