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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Autores principales: Fiorini, V.D., Reboreda, J.C.
Formato: JOUR
Materias:
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
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03405443_v60_n3_p379_Fiorini
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03405443_v60_n3_p379_Fiorini
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spelling todo:paper_03405443_v60_n3_p379_Fiorini2023-10-03T15:25:39Z Cues used by shiny cowbirds (Molothrus bonariensis) to locate and parasitise chalk-browed mockingbird (Mimus saturninus) nests Fiorini, V.D. Reboreda, J.C. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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, V.D.
Reboreda, J.C.
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.
format JOUR
author Fiorini, V.D.
Reboreda, J.C.
author_facet Fiorini, V.D.
Reboreda, J.C.
author_sort Fiorini, V.D.
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
url http://hdl.handle.net/20.500.12110/paper_03405443_v60_n3_p379_Fiorini
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AT reboredajc cuesusedbyshinycowbirdsmolothrusbonariensistolocateandparasitisechalkbrowedmockingbirdmimussaturninusnests
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