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Red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism

In functionally referential communication systems, the signaler's message intended for a conspecific receiver may be intercepted and used by a heterospecific eavesdropper for its own benefit. For example, yellow warblers (Setophaga petechia) produce seet calls to warn conspecifics of nearby bro...

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Autores principales: Lawson, Shelby L., Enos, Janice K., Gill, Sharon A., Hauber, Mark E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9911624/
https://www.ncbi.nlm.nih.gov/pubmed/36789338
http://dx.doi.org/10.1002/ece3.9818
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author Lawson, Shelby L.
Enos, Janice K.
Gill, Sharon A.
Hauber, Mark E.
author_facet Lawson, Shelby L.
Enos, Janice K.
Gill, Sharon A.
Hauber, Mark E.
author_sort Lawson, Shelby L.
collection PubMed
description In functionally referential communication systems, the signaler's message intended for a conspecific receiver may be intercepted and used by a heterospecific eavesdropper for its own benefit. For example, yellow warblers (Setophaga petechia) produce seet calls to warn conspecifics of nearby brood parasitic brown‐headed cowbirds (Molothrus ater), and red‐winged blackbirds (Agelaius phoeniceus) eavesdrop on and recruit to seet calls to mob the brood parasites. Prior work found that warblers nesting closer to blackbirds were less likely to be parasitized, suggesting that blackbirds may even be the target of warbler's seet calls to assist with antiparasitic defense. Here we discovered for the reverse to apply too: blackbirds nesting closer to yellow warblers also experienced lower probability of brood parasitism. Concurrently, we also found that blackbirds nesting closer to other blackbirds also experience lower parasitism rates. Although these are strictly correlational results, they nonetheless suggest that blackbirds are better able to defend their nest against cowbirds when also listening to nearby warblers' referential alarm calls.
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spelling pubmed-99116242023-02-13 Red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism Lawson, Shelby L. Enos, Janice K. Gill, Sharon A. Hauber, Mark E. Ecol Evol Nature Notes In functionally referential communication systems, the signaler's message intended for a conspecific receiver may be intercepted and used by a heterospecific eavesdropper for its own benefit. For example, yellow warblers (Setophaga petechia) produce seet calls to warn conspecifics of nearby brood parasitic brown‐headed cowbirds (Molothrus ater), and red‐winged blackbirds (Agelaius phoeniceus) eavesdrop on and recruit to seet calls to mob the brood parasites. Prior work found that warblers nesting closer to blackbirds were less likely to be parasitized, suggesting that blackbirds may even be the target of warbler's seet calls to assist with antiparasitic defense. Here we discovered for the reverse to apply too: blackbirds nesting closer to yellow warblers also experienced lower probability of brood parasitism. Concurrently, we also found that blackbirds nesting closer to other blackbirds also experience lower parasitism rates. Although these are strictly correlational results, they nonetheless suggest that blackbirds are better able to defend their nest against cowbirds when also listening to nearby warblers' referential alarm calls. John Wiley and Sons Inc. 2023-02-09 /pmc/articles/PMC9911624/ /pubmed/36789338 http://dx.doi.org/10.1002/ece3.9818 Text en © 2023 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Nature Notes
Lawson, Shelby L.
Enos, Janice K.
Gill, Sharon A.
Hauber, Mark E.
Red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism
title Red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism
title_full Red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism
title_fullStr Red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism
title_full_unstemmed Red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism
title_short Red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism
title_sort red‐winged blackbirds nesting nearer to yellow warbler and conspecific nests experience less brood parasitism
topic Nature Notes
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9911624/
https://www.ncbi.nlm.nih.gov/pubmed/36789338
http://dx.doi.org/10.1002/ece3.9818
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