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...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_15220613_v16_n1_p51_Palacio |
| Aporte de: |
| id |
todo:paper_15220613_v16_n1_p51_Palacio |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_15220613_v16_n1_p51_Palacio2023-10-03T16:20:41Z Bird-mediated selection on fruit display traits in Celtis ehrenbergiana (Cannabaceae) Palacio, F.X. Lacoretz, M. Ordano, M. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Palacio, F.X. Lacoretz, M. Ordano, M. 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. |
| format |
JOUR |
| author |
Palacio, F.X. Lacoretz, M. Ordano, M. |
| author_facet |
Palacio, F.X. Lacoretz, M. Ordano, M. |
| author_sort |
Palacio, F.X. |
| 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) |
| url |
http://hdl.handle.net/20.500.12110/paper_15220613_v16_n1_p51_Palacio |
| work_keys_str_mv |
AT palaciofx birdmediatedselectiononfruitdisplaytraitsinceltisehrenbergianacannabaceae AT lacoretzm birdmediatedselectiononfruitdisplaytraitsinceltisehrenbergianacannabaceae AT ordanom birdmediatedselectiononfruitdisplaytraitsinceltisehrenbergianacannabaceae |
| _version_ |
1807321498146308096 |