Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests
Unlike other birds, shiny cowbirds (Molothrus bonariensis) must locate host nests where to lay their eggs and then decide whether to parasitise them. They should also synchronise their laying with that of the host to increase the survival of parasite egg and young. Shiny cowbirds can discover nests...
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2006
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03405443_v60_n3_p379_Fiorini http://hdl.handle.net/20.500.12110/paper_03405443_v60_n3_p379_Fiorini |
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paper:paper_03405443_v60_n3_p379_Fiorini2023-06-08T15:34:01Z Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests Fiorini, Vanina Dafne Reboreda, Juan Carlos Brood parasitism Chalk-browed mockingbird Egg punctures Mimus saturninus Molothrus bonariensis Nest location Shiny cowbird behavioral ecology bird brood parasitism egg production egg size embryonic development experimental study nest site parasite intensity survival synchrony Aves Mimus saturninus Molothrus bonariensis Unlike other birds, shiny cowbirds (Molothrus bonariensis) must locate host nests where to lay their eggs and then decide whether to parasitise them. They should also synchronise their laying with that of the host to increase the survival of parasite egg and young. Shiny cowbirds can discover nests using host behaviour as a cue, or by searching the habitat without need for the presence of a host. Besides, they can synchronise parasitism with host laying by monitoring nests during building and laying, or directly by assessing the degree of development of embryos through the puncture of host eggs. Alternatively, synchronization can arise by lower nest attentiveness during host laying. We determined the extent of synchronization between laying of shiny cowbirds and chalk-browed mockingbirds (Mimus saturninus) and estimated if parasitism was negatively associated with host nest attentiveness. We also conducted an experiment to test if host activity was necessary to locate nests, and if puncture of host eggs was a cue for deciding parasitism. Shiny cowbirds synchronised parasitism with host laying in 75% of the cases and synchronization was not explained by lower host nest attentiveness during laying. Shiny cowbirds located nests without need for presence of a host, but the decision of parasitising the nest depended on host activity at the nest. The information that shiny cowbirds could obtain through egg punctures was not necessary for deciding parasitism. Our results indicate that shiny cowbirds rely on the precise timing of their eggs and avoid laying in unsuitable nests. © Springer-Verlag 2006. 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. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03405443_v60_n3_p379_Fiorini http://hdl.handle.net/20.500.12110/paper_03405443_v60_n3_p379_Fiorini |
| 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 Chalk-browed mockingbird Egg punctures Mimus saturninus Molothrus bonariensis Nest location Shiny cowbird behavioral ecology bird brood parasitism egg production egg size embryonic development experimental study nest site parasite intensity survival synchrony Aves Mimus saturninus Molothrus bonariensis |
| spellingShingle |
Brood parasitism Chalk-browed mockingbird Egg punctures Mimus saturninus Molothrus bonariensis Nest location Shiny cowbird behavioral ecology bird brood parasitism egg production egg size embryonic development experimental study nest site parasite intensity survival synchrony Aves Mimus saturninus Molothrus bonariensis Fiorini, Vanina Dafne Reboreda, Juan Carlos Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests |
| topic_facet |
Brood parasitism Chalk-browed mockingbird Egg punctures Mimus saturninus Molothrus bonariensis Nest location Shiny cowbird behavioral ecology bird brood parasitism egg production egg size embryonic development experimental study nest site parasite intensity survival synchrony Aves Mimus saturninus Molothrus bonariensis |
| description |
Unlike other birds, shiny cowbirds (Molothrus bonariensis) must locate host nests where to lay their eggs and then decide whether to parasitise them. They should also synchronise their laying with that of the host to increase the survival of parasite egg and young. Shiny cowbirds can discover nests using host behaviour as a cue, or by searching the habitat without need for the presence of a host. Besides, they can synchronise parasitism with host laying by monitoring nests during building and laying, or directly by assessing the degree of development of embryos through the puncture of host eggs. Alternatively, synchronization can arise by lower nest attentiveness during host laying. We determined the extent of synchronization between laying of shiny cowbirds and chalk-browed mockingbirds (Mimus saturninus) and estimated if parasitism was negatively associated with host nest attentiveness. We also conducted an experiment to test if host activity was necessary to locate nests, and if puncture of host eggs was a cue for deciding parasitism. Shiny cowbirds synchronised parasitism with host laying in 75% of the cases and synchronization was not explained by lower host nest attentiveness during laying. Shiny cowbirds located nests without need for presence of a host, but the decision of parasitising the nest depended on host activity at the nest. The information that shiny cowbirds could obtain through egg punctures was not necessary for deciding parasitism. Our results indicate that shiny cowbirds rely on the precise timing of their eggs and avoid laying in unsuitable nests. © Springer-Verlag 2006. |
| author |
Fiorini, Vanina Dafne Reboreda, Juan Carlos |
| author_facet |
Fiorini, Vanina Dafne Reboreda, Juan Carlos |
| author_sort |
Fiorini, Vanina Dafne |
| title |
Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests |
| title_short |
Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests |
| title_full |
Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests |
| title_fullStr |
Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests |
| title_full_unstemmed |
Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests |
| title_sort |
cues used by shiny cowbirds (molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (mimus saturninus) nests |
| publishDate |
2006 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03405443_v60_n3_p379_Fiorini http://hdl.handle.net/20.500.12110/paper_03405443_v60_n3_p379_Fiorini |
| work_keys_str_mv |
AT fiorinivaninadafne cuesusedbyshinycowbirdsmolothrusbonariensistolocateandparasitisechalkbrowedmockingbirdmimussaturninusnests AT reboredajuancarlos cuesusedbyshinycowbirdsmolothrusbonariensistolocateandparasitisechalkbrowedmockingbirdmimussaturninusnests |
| _version_ |
1768545880771657728 |