Do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests?
Interspecific brood parasites, like the shiny cowbird (Molothrus bonariensis), lay eggs in nests of other species. Shiny cowbird females peck and puncture eggs when they parasitize host nests. This behavior increases the survival of cowbird chicks when they have to compete for food with larger nestm...
Guardado en:
| Autores principales: | , , |
|---|---|
| Publicado: |
2012
|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v89_n2_p137_Tuero http://hdl.handle.net/20.500.12110/paper_03766357_v89_n2_p137_Tuero |
| Aporte de: |
| id |
paper:paper_03766357_v89_n2_p137_Tuero |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_03766357_v89_n2_p137_Tuero2023-06-08T15:38:48Z Do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests? Tuero, Diego Tomas Fiorini, Vanina Dafne Reboreda, Juan Carlos Brood parasitism Cowbirds Egg punctures Molothrus Virulence artificial nest behavioral ecology brood parasitism captivity egg female food provisioning interspecific competition nest nestmate recognition songbird survival virulence animal behavior article bird chick egg egg pecking behavior female interspecific competition Mimus saturninus Molothrus bonariensis nesting nonhuman Troglodytes aedon Aggression Animals Choice Behavior Competitive Behavior Eggs Female Nesting Behavior Passeriformes Mimus saturninus Molothrus Molothrus bonariensis Troglodytes Troglodytes aedon Interspecific brood parasites, like the shiny cowbird (Molothrus bonariensis), lay eggs in nests of other species. Shiny cowbird females peck and puncture eggs when they parasitize host nests. This behavior increases the survival of cowbird chicks when they have to compete for food with larger nestmates. However, cowbird chicks may benefit from smaller nestmates as they increase food provisioning by parents and the cowbird chicks secure most extra provisioning. We investigated whether egg-pecking behavior by female shiny cowbirds might be adjusted to the competition that their chicks face in host nests. We found that more host eggs are destroyed per cowbird egg laid in a larger-bodied host (chalk-browed mockingbird, Mimus saturninus, 70-75. g) than a smaller-bodied host (house wrens, Troglodytes aedon, 12-13. g). We also tested egg-pecking preferences in choice experiments with female cowbirds in captivity and found cowbirds presented with eggs in artificial nests pecked first and more frequently, and punctured more frequently the larger egg when this was a host egg, but not when this was a cowbird egg. Our results are partially consistent with the hypothesis that shiny cowbird females adaptively adjust their egg pecking behavior according to the competition that their chicks face in host nests. © 2011 Elsevier B.V. Fil:Tuero, D.T. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fiorini, V.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Reboreda, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v89_n2_p137_Tuero http://hdl.handle.net/20.500.12110/paper_03766357_v89_n2_p137_Tuero |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Brood parasitism Cowbirds Egg punctures Molothrus Virulence artificial nest behavioral ecology brood parasitism captivity egg female food provisioning interspecific competition nest nestmate recognition songbird survival virulence animal behavior article bird chick egg egg pecking behavior female interspecific competition Mimus saturninus Molothrus bonariensis nesting nonhuman Troglodytes aedon Aggression Animals Choice Behavior Competitive Behavior Eggs Female Nesting Behavior Passeriformes Mimus saturninus Molothrus Molothrus bonariensis Troglodytes Troglodytes aedon |
| spellingShingle |
Brood parasitism Cowbirds Egg punctures Molothrus Virulence artificial nest behavioral ecology brood parasitism captivity egg female food provisioning interspecific competition nest nestmate recognition songbird survival virulence animal behavior article bird chick egg egg pecking behavior female interspecific competition Mimus saturninus Molothrus bonariensis nesting nonhuman Troglodytes aedon Aggression Animals Choice Behavior Competitive Behavior Eggs Female Nesting Behavior Passeriformes Mimus saturninus Molothrus Molothrus bonariensis Troglodytes Troglodytes aedon Tuero, Diego Tomas Fiorini, Vanina Dafne Reboreda, Juan Carlos Do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests? |
| topic_facet |
Brood parasitism Cowbirds Egg punctures Molothrus Virulence artificial nest behavioral ecology brood parasitism captivity egg female food provisioning interspecific competition nest nestmate recognition songbird survival virulence animal behavior article bird chick egg egg pecking behavior female interspecific competition Mimus saturninus Molothrus bonariensis nesting nonhuman Troglodytes aedon Aggression Animals Choice Behavior Competitive Behavior Eggs Female Nesting Behavior Passeriformes Mimus saturninus Molothrus Molothrus bonariensis Troglodytes Troglodytes aedon |
| description |
Interspecific brood parasites, like the shiny cowbird (Molothrus bonariensis), lay eggs in nests of other species. Shiny cowbird females peck and puncture eggs when they parasitize host nests. This behavior increases the survival of cowbird chicks when they have to compete for food with larger nestmates. However, cowbird chicks may benefit from smaller nestmates as they increase food provisioning by parents and the cowbird chicks secure most extra provisioning. We investigated whether egg-pecking behavior by female shiny cowbirds might be adjusted to the competition that their chicks face in host nests. We found that more host eggs are destroyed per cowbird egg laid in a larger-bodied host (chalk-browed mockingbird, Mimus saturninus, 70-75. g) than a smaller-bodied host (house wrens, Troglodytes aedon, 12-13. g). We also tested egg-pecking preferences in choice experiments with female cowbirds in captivity and found cowbirds presented with eggs in artificial nests pecked first and more frequently, and punctured more frequently the larger egg when this was a host egg, but not when this was a cowbird egg. Our results are partially consistent with the hypothesis that shiny cowbird females adaptively adjust their egg pecking behavior according to the competition that their chicks face in host nests. © 2011 Elsevier B.V. |
| author |
Tuero, Diego Tomas Fiorini, Vanina Dafne Reboreda, Juan Carlos |
| author_facet |
Tuero, Diego Tomas Fiorini, Vanina Dafne Reboreda, Juan Carlos |
| author_sort |
Tuero, Diego Tomas |
| title |
Do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests? |
| title_short |
Do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests? |
| title_full |
Do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests? |
| title_fullStr |
Do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests? |
| title_full_unstemmed |
Do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests? |
| title_sort |
do shiny cowbird females adjust egg pecking behavior according to the level of competition their chicks face in host nests? |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v89_n2_p137_Tuero http://hdl.handle.net/20.500.12110/paper_03766357_v89_n2_p137_Tuero |
| work_keys_str_mv |
AT tuerodiegotomas doshinycowbirdfemalesadjusteggpeckingbehavioraccordingtothelevelofcompetitiontheirchicksfaceinhostnests AT fiorinivaninadafne doshinycowbirdfemalesadjusteggpeckingbehavioraccordingtothelevelofcompetitiontheirchicksfaceinhostnests AT reboredajuancarlos doshinycowbirdfemalesadjusteggpeckingbehavioraccordingtothelevelofcompetitiontheirchicksfaceinhostnests |
| _version_ |
1768545978230505472 |