Effect of egg type on the estimation of nest predation in passerines

We compared predation rates of artificial nests baited with different egg types with the predation rates on nests of the Brown-and-yellow Marshbird (Pseudoleistes virescens), a Neotropical passerine common in the same area, in Argentina. We used deserted natural nests as experimental nests, baited w...

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Detalles Bibliográficos
Autores principales: Svagelj, W.S., Mermoz, M.E., Fernández, G.J.
Formato: JOUR
Materias:
Brown-and-yellow Marshbird
Cowbird
Egg survival time
Experimental nests
Nest survival time
Predation risk
Predators
Coturnix
Coturnix coturnix
Coturnix japonica
Molothrus
Molothrus bonariensis
Passeriformes
Phasianidae
Pseudoleistes
Pseudoleistes virescens
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02738570_v74_n3_p243_Svagelj
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02738570_v74_n3_p243_Svagelj
record_format dspace
spelling todo:paper_02738570_v74_n3_p243_Svagelj2023-10-03T15:15:51Z Effect of egg type on the estimation of nest predation in passerines Svagelj, W.S. Mermoz, M.E. Fernández, G.J. Brown-and-yellow Marshbird Cowbird Egg survival time Experimental nests Nest survival time Predation risk Predators Coturnix Coturnix coturnix Coturnix coturnix Coturnix japonica Molothrus Molothrus bonariensis Molothrus bonariensis Passeriformes Phasianidae Pseudoleistes Pseudoleistes virescens Pseudoleistes virescens We compared predation rates of artificial nests baited with different egg types with the predation rates on nests of the Brown-and-yellow Marshbird (Pseudoleistes virescens), a Neotropical passerine common in the same area, in Argentina. We used deserted natural nests as experimental nests, baited with either Japanese Quail (Coturnix coturnix) or Shiny Cowbird (Molothrus bonariensis) eggs. Each experimental nest was baited with one natural and one paraffin-filled egg. Experimental nests baited with quail eggs suffered lower predation and egg losses than those baited with cowbird eggs. The main cause of egg loss and nest mortality in "cowbird nests" was pecking behavior of cowbirds. However, when we removed the effect of cowbirds, differences still held. In this area, the Shiny Cowbird is common and is the main cause of reduced breeding success of several host species. "Quail nests" had higher nest and egg survival than active Brown-and-yellow Marshbird nests. In contrast, "cowbird nests" and active Brown-and-yellow Marshbird nests had similar nest and egg survival. Experimental nests baited with natural passerine eggs such as those of Shiny Cowbirds seem to approximate the natural nest and egg predation risk for passerines in our study area. Fil:Svagelj, W.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mermoz, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fernández, G.J. 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_02738570_v74_n3_p243_Svagelj
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Brown-and-yellow Marshbird
Cowbird
Egg survival time
Experimental nests
Nest survival time
Predation risk
Predators
Coturnix
Coturnix coturnix
Coturnix coturnix
Coturnix japonica
Molothrus
Molothrus bonariensis
Molothrus bonariensis
Passeriformes
Phasianidae
Pseudoleistes
Pseudoleistes virescens
Pseudoleistes virescens
spellingShingle Brown-and-yellow Marshbird
Cowbird
Egg survival time
Experimental nests
Nest survival time
Predation risk
Predators
Coturnix
Coturnix coturnix
Coturnix coturnix
Coturnix japonica
Molothrus
Molothrus bonariensis
Molothrus bonariensis
Passeriformes
Phasianidae
Pseudoleistes
Pseudoleistes virescens
Pseudoleistes virescens
Svagelj, W.S.
Mermoz, M.E.
Fernández, G.J.
Effect of egg type on the estimation of nest predation in passerines
topic_facet Brown-and-yellow Marshbird
Cowbird
Egg survival time
Experimental nests
Nest survival time
Predation risk
Predators
Coturnix
Coturnix coturnix
Coturnix coturnix
Coturnix japonica
Molothrus
Molothrus bonariensis
Molothrus bonariensis
Passeriformes
Phasianidae
Pseudoleistes
Pseudoleistes virescens
Pseudoleistes virescens
description We compared predation rates of artificial nests baited with different egg types with the predation rates on nests of the Brown-and-yellow Marshbird (Pseudoleistes virescens), a Neotropical passerine common in the same area, in Argentina. We used deserted natural nests as experimental nests, baited with either Japanese Quail (Coturnix coturnix) or Shiny Cowbird (Molothrus bonariensis) eggs. Each experimental nest was baited with one natural and one paraffin-filled egg. Experimental nests baited with quail eggs suffered lower predation and egg losses than those baited with cowbird eggs. The main cause of egg loss and nest mortality in "cowbird nests" was pecking behavior of cowbirds. However, when we removed the effect of cowbirds, differences still held. In this area, the Shiny Cowbird is common and is the main cause of reduced breeding success of several host species. "Quail nests" had higher nest and egg survival than active Brown-and-yellow Marshbird nests. In contrast, "cowbird nests" and active Brown-and-yellow Marshbird nests had similar nest and egg survival. Experimental nests baited with natural passerine eggs such as those of Shiny Cowbirds seem to approximate the natural nest and egg predation risk for passerines in our study area.
format JOUR
author Svagelj, W.S.
Mermoz, M.E.
Fernández, G.J.
author_facet Svagelj, W.S.
Mermoz, M.E.
Fernández, G.J.
author_sort Svagelj, W.S.
title Effect of egg type on the estimation of nest predation in passerines
title_short Effect of egg type on the estimation of nest predation in passerines
title_full Effect of egg type on the estimation of nest predation in passerines
title_fullStr Effect of egg type on the estimation of nest predation in passerines
title_full_unstemmed Effect of egg type on the estimation of nest predation in passerines
title_sort effect of egg type on the estimation of nest predation in passerines
url http://hdl.handle.net/20.500.12110/paper_02738570_v74_n3_p243_Svagelj
work_keys_str_mv AT svageljws effectofeggtypeontheestimationofnestpredationinpasserines
AT mermozme effectofeggtypeontheestimationofnestpredationinpasserines
AT fernandezgj effectofeggtypeontheestimationofnestpredationinpasserines
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