Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite

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Brood parasitism imposes several fitness costs on the host species. To reduce these costs, hosts of avian brood parasites have evolved various defenses, of which egg rejection is the most prevalent. In the face of variable host-parasite mimicry and the costs of egg discrimination itself, many hosts...

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Autores principales:	de la Colina, M.A., Pompilio, L., Hauber, M.E., Reboreda, J.C., Mahler, B.
Formato:	JOUR
Materias:	Antiparasite defenses Chalk-browed Mockingbird Egg rejection Eggshell spotting Shiny Cowbird animal article association female host parasite interaction nesting oocyte parasitology pattern recognition recognition songbird Animals Cues Female Host-Parasite Interactions Nesting Behavior Ovum Passeriformes Pattern Recognition, Visual Recognition (Psychology) Aves Mimus saturninus Molothrus Molothrus bonariensis
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_14359448_v15_n5_p881_delaColina
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_14359448_v15_n5_p881_delaColina
record_format	dspace
spelling	todo:paper_14359448_v15_n5_p881_delaColina2023-10-03T16:15:53Z Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite de la Colina, M.A. Pompilio, L. Hauber, M.E. Reboreda, J.C. Mahler, B. Antiparasite defenses Chalk-browed Mockingbird Egg rejection Eggshell spotting Shiny Cowbird animal article association female host parasite interaction nesting oocyte parasitology pattern recognition recognition songbird Animals Cues Female Host-Parasite Interactions Nesting Behavior Ovum Passeriformes Pattern Recognition, Visual Recognition (Psychology) Aves Mimus saturninus Molothrus Molothrus bonariensis Brood parasitism imposes several fitness costs on the host species. To reduce these costs, hosts of avian brood parasites have evolved various defenses, of which egg rejection is the most prevalent. In the face of variable host-parasite mimicry and the costs of egg discrimination itself, many hosts reject only some foreign eggs. Here, we experimentally varied the recognition cues to study the underlying cognitive mechanisms used by the Chalk-browed Mockingbird (Mimus saturninus) to reject the white immaculate eggs laid by the parasitic Shiny Cowbird (Molothrus bonariensis). Immaculate eggs are the only parasite eggs rejected by this host, as it accepts all polymorphic, spotted eggs laid by cowbirds. Using a within-breeding pair experimental design, we tested for the salience of spotting, UV reflectance, and brightness in eliciting rejection. We found that the presence of spotting significantly decreased the probability of rejection while increments in brightness significantly increased rejection frequencies. The cognitive rules underlying mockingbird rejection behavior can be explained by a decision-making model which predicts changes in the levels of rejection in direct relation to the number of relevant attributes shared between host and parasite eggs. © 2012 Springer-Verlag. Fil:de la Colina, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pompilio, L. 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. Fil:Mahler, B. 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_14359448_v15_n5_p881_delaColina
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Antiparasite defenses Chalk-browed Mockingbird Egg rejection Eggshell spotting Shiny Cowbird animal article association female host parasite interaction nesting oocyte parasitology pattern recognition recognition songbird Animals Cues Female Host-Parasite Interactions Nesting Behavior Ovum Passeriformes Pattern Recognition, Visual Recognition (Psychology) Aves Mimus saturninus Molothrus Molothrus bonariensis
spellingShingle	Antiparasite defenses Chalk-browed Mockingbird Egg rejection Eggshell spotting Shiny Cowbird animal article association female host parasite interaction nesting oocyte parasitology pattern recognition recognition songbird Animals Cues Female Host-Parasite Interactions Nesting Behavior Ovum Passeriformes Pattern Recognition, Visual Recognition (Psychology) Aves Mimus saturninus Molothrus Molothrus bonariensis de la Colina, M.A. Pompilio, L. Hauber, M.E. Reboreda, J.C. Mahler, B. Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite
topic_facet	Antiparasite defenses Chalk-browed Mockingbird Egg rejection Eggshell spotting Shiny Cowbird animal article association female host parasite interaction nesting oocyte parasitology pattern recognition recognition songbird Animals Cues Female Host-Parasite Interactions Nesting Behavior Ovum Passeriformes Pattern Recognition, Visual Recognition (Psychology) Aves Mimus saturninus Molothrus Molothrus bonariensis
description	Brood parasitism imposes several fitness costs on the host species. To reduce these costs, hosts of avian brood parasites have evolved various defenses, of which egg rejection is the most prevalent. In the face of variable host-parasite mimicry and the costs of egg discrimination itself, many hosts reject only some foreign eggs. Here, we experimentally varied the recognition cues to study the underlying cognitive mechanisms used by the Chalk-browed Mockingbird (Mimus saturninus) to reject the white immaculate eggs laid by the parasitic Shiny Cowbird (Molothrus bonariensis). Immaculate eggs are the only parasite eggs rejected by this host, as it accepts all polymorphic, spotted eggs laid by cowbirds. Using a within-breeding pair experimental design, we tested for the salience of spotting, UV reflectance, and brightness in eliciting rejection. We found that the presence of spotting significantly decreased the probability of rejection while increments in brightness significantly increased rejection frequencies. The cognitive rules underlying mockingbird rejection behavior can be explained by a decision-making model which predicts changes in the levels of rejection in direct relation to the number of relevant attributes shared between host and parasite eggs. © 2012 Springer-Verlag.
format	JOUR
author	de la Colina, M.A. Pompilio, L. Hauber, M.E. Reboreda, J.C. Mahler, B.
author_facet	de la Colina, M.A. Pompilio, L. Hauber, M.E. Reboreda, J.C. Mahler, B.
author_sort	de la Colina, M.A.
title	Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite
title_short	Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite
title_full	Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite
title_fullStr	Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite
title_full_unstemmed	Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite
title_sort	different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite
url	http://hdl.handle.net/20.500.12110/paper_14359448_v15_n5_p881_delaColina
work_keys_str_mv	AT delacolinama differentrecognitioncuesrevealthedecisionrulesusedforeggrejectionbyhostsofavariablymimeticavianbroodparasite AT pompiliol differentrecognitioncuesrevealthedecisionrulesusedforeggrejectionbyhostsofavariablymimeticavianbroodparasite AT hauberme differentrecognitioncuesrevealthedecisionrulesusedforeggrejectionbyhostsofavariablymimeticavianbroodparasite AT reboredajc differentrecognitioncuesrevealthedecisionrulesusedforeggrejectionbyhostsofavariablymimeticavianbroodparasite AT mahlerb differentrecognitioncuesrevealthedecisionrulesusedforeggrejectionbyhostsofavariablymimeticavianbroodparasite
_version_	1807324493029310464

Different recognition cues reveal the decision rules used for egg rejection by hosts of a variably mimetic avian brood parasite

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