Armed rollers: does nestling's vomit function as a defence against predators?

Chemical defences against predators are widespread in the animal kingdom although have been seldom reported in birds. Here, we investigate the possibility that the orange liquid that nestlings of an insectivorous bird, the Eurasian roller (Coracias garrulus), expel when scared at their nests acts as...

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Autores principales:	Deseada Parejo, Jesús M Avilés, Aránzazu Peña, Lourdes Sánchez, Francisca Ruano, Carmen Zamora-Muñoz, Manuel Martín-Vivaldi
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/0e65d8da7350453fb60947fd153a07af
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spelling	oai:doaj.org-article:0e65d8da7350453fb60947fd153a07af2021-11-18T07:37:54ZArmed rollers: does nestling's vomit function as a defence against predators?1932-620310.1371/journal.pone.0068862https://doaj.org/article/0e65d8da7350453fb60947fd153a07af2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23874791/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Chemical defences against predators are widespread in the animal kingdom although have been seldom reported in birds. Here, we investigate the possibility that the orange liquid that nestlings of an insectivorous bird, the Eurasian roller (Coracias garrulus), expel when scared at their nests acts as a chemical defence against predators. We studied the diet of nestling rollers and vomit origin, its chemical composition and deterrent effect on a mammal generalist predator. We also hypothesized that nestling rollers, as their main prey (i.e. grasshoppers) do from plants, could sequester chemicals from their prey for their use. Grasshoppers, that also regurgitate when facing to a threat, store the harmful substances used by plants to defend themselves against herbivores. We found that nestling rollers only vomit after being grasped and moved. The production of vomit depended on food consumption and the vomit contained two deterrent chemicals (hydroxycinnamic and hydroxybenzoic acids) stored by grasshoppers and used by plants to diminish herbivory, suggesting that they originate from the rollers' prey. Finally, we showed for the first time that the oral secretion of a vertebrate had a deterrent effect on a model predator because vomit of nestling rollers made meat distasteful to dogs. These results support the idea that the vomit of nestling rollers is a chemical defence against predators.Deseada ParejoJesús M AvilésAránzazu PeñaLourdes SánchezFrancisca RuanoCarmen Zamora-MuñozManuel Martín-VivaldiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 7, p e68862 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Deseada Parejo Jesús M Avilés Aránzazu Peña Lourdes Sánchez Francisca Ruano Carmen Zamora-Muñoz Manuel Martín-Vivaldi Armed rollers: does nestling's vomit function as a defence against predators?
description	Chemical defences against predators are widespread in the animal kingdom although have been seldom reported in birds. Here, we investigate the possibility that the orange liquid that nestlings of an insectivorous bird, the Eurasian roller (Coracias garrulus), expel when scared at their nests acts as a chemical defence against predators. We studied the diet of nestling rollers and vomit origin, its chemical composition and deterrent effect on a mammal generalist predator. We also hypothesized that nestling rollers, as their main prey (i.e. grasshoppers) do from plants, could sequester chemicals from their prey for their use. Grasshoppers, that also regurgitate when facing to a threat, store the harmful substances used by plants to defend themselves against herbivores. We found that nestling rollers only vomit after being grasped and moved. The production of vomit depended on food consumption and the vomit contained two deterrent chemicals (hydroxycinnamic and hydroxybenzoic acids) stored by grasshoppers and used by plants to diminish herbivory, suggesting that they originate from the rollers' prey. Finally, we showed for the first time that the oral secretion of a vertebrate had a deterrent effect on a model predator because vomit of nestling rollers made meat distasteful to dogs. These results support the idea that the vomit of nestling rollers is a chemical defence against predators.
format	article
author	Deseada Parejo Jesús M Avilés Aránzazu Peña Lourdes Sánchez Francisca Ruano Carmen Zamora-Muñoz Manuel Martín-Vivaldi
author_facet	Deseada Parejo Jesús M Avilés Aránzazu Peña Lourdes Sánchez Francisca Ruano Carmen Zamora-Muñoz Manuel Martín-Vivaldi
author_sort	Deseada Parejo
title	Armed rollers: does nestling's vomit function as a defence against predators?
title_short	Armed rollers: does nestling's vomit function as a defence against predators?
title_full	Armed rollers: does nestling's vomit function as a defence against predators?
title_fullStr	Armed rollers: does nestling's vomit function as a defence against predators?
title_full_unstemmed	Armed rollers: does nestling's vomit function as a defence against predators?
title_sort	armed rollers: does nestling's vomit function as a defence against predators?
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/0e65d8da7350453fb60947fd153a07af
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Armed rollers: does nestling's vomit function as a defence against predators?

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