Pied flycatcher nestlings incur immunological but not growth begging costs

Many theoretical models on the evolution of nestling begging assume this behavior is costly, so that only nestlings in real need of food would profit from giving intensive signals to parents. However, evidence accumulated for the last 2 decades is either contradictory (growth costs) or scant (immuno...

ver descrição completa

Detalhes bibliográficos
Autores: Redondo, Tomás, Ochoa, David, Moreno-Rueda, G., Potti, Jaime
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2016
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/139987
Acesso em linha:http://hdl.handle.net/10261/139987
Access Level:Acceso aberto
Palavra-chave:Begging
Signaling
Communication
Ficedula hypoleuca
Handicap principle
id ES_ed6b524d9ba359c3b0d83e20541c0ed4
oai_identifier_str oai:digital.csic.es:10261/139987
network_acronym_str ES
network_name_str España
repository_id_str
spelling Pied flycatcher nestlings incur immunological but not growth begging costsRedondo, TomásOchoa, DavidMoreno-Rueda, G.Potti, JaimeBeggingSignalingCommunicationFicedula hypoleucaHandicap principleMany theoretical models on the evolution of nestling begging assume this behavior is costly, so that only nestlings in real need of food would profit from giving intensive signals to parents. However, evidence accumulated for the last 2 decades is either contradictory (growth costs) or scant (immunological cost). Here, we experimentally test the existence of both costs in pied flycatcher (Ficedula hypoleuca) nestlings, a species in which parents appropriately respond to honest begging signals. Nestlings were paired by nest of origin and similar body mass. In each pair, a nestling was forced to beg for 51s/meal, whereas the other begged for only 3.4s/meal, both receiving the same amount of food. Simultaneously, the nestling immune response to an antigen (phytohemagglutinin) was measured. Experimental nestlings showed reduced immunocompetence compared with control chicks, which in this species could be regarded as a genuine direct cost. High-begging nestlings also gained less mass during the daylight activity hours. However, they lost less mass while resting at night, resulting in similar mass gains for both groups across the whole daily cycle. This suggests that negative effects of excess begging on mass gain can be compensated for by nestlings, thus avoiding the negative fitness consequences (i.e., cost) of a retarded growth. Mixed results found in previous studies may reflect interspecific differences in compensatory changes in mass gain. But if such differences do not map into fitness consequences, they may be of little help to answer the question of whether begging entails direct growth costs.Peer reviewedOxford University PressConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/139987reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1093/beheco/arw045Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1399872026-05-22T06:33:51Z
dc.title.none.fl_str_mv Pied flycatcher nestlings incur immunological but not growth begging costs
title Pied flycatcher nestlings incur immunological but not growth begging costs
spellingShingle Pied flycatcher nestlings incur immunological but not growth begging costs
Redondo, Tomás
Begging
Signaling
Communication
Ficedula hypoleuca
Handicap principle
title_short Pied flycatcher nestlings incur immunological but not growth begging costs
title_full Pied flycatcher nestlings incur immunological but not growth begging costs
title_fullStr Pied flycatcher nestlings incur immunological but not growth begging costs
title_full_unstemmed Pied flycatcher nestlings incur immunological but not growth begging costs
title_sort Pied flycatcher nestlings incur immunological but not growth begging costs
dc.creator.none.fl_str_mv Redondo, Tomás
Ochoa, David
Moreno-Rueda, G.
Potti, Jaime
author Redondo, Tomás
author_facet Redondo, Tomás
Ochoa, David
Moreno-Rueda, G.
Potti, Jaime
author_role author
author2 Ochoa, David
Moreno-Rueda, G.
Potti, Jaime
author2_role author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Begging
Signaling
Communication
Ficedula hypoleuca
Handicap principle
topic Begging
Signaling
Communication
Ficedula hypoleuca
Handicap principle
description Many theoretical models on the evolution of nestling begging assume this behavior is costly, so that only nestlings in real need of food would profit from giving intensive signals to parents. However, evidence accumulated for the last 2 decades is either contradictory (growth costs) or scant (immunological cost). Here, we experimentally test the existence of both costs in pied flycatcher (Ficedula hypoleuca) nestlings, a species in which parents appropriately respond to honest begging signals. Nestlings were paired by nest of origin and similar body mass. In each pair, a nestling was forced to beg for 51s/meal, whereas the other begged for only 3.4s/meal, both receiving the same amount of food. Simultaneously, the nestling immune response to an antigen (phytohemagglutinin) was measured. Experimental nestlings showed reduced immunocompetence compared with control chicks, which in this species could be regarded as a genuine direct cost. High-begging nestlings also gained less mass during the daylight activity hours. However, they lost less mass while resting at night, resulting in similar mass gains for both groups across the whole daily cycle. This suggests that negative effects of excess begging on mass gain can be compensated for by nestlings, thus avoiding the negative fitness consequences (i.e., cost) of a retarded growth. Mixed results found in previous studies may reflect interspecific differences in compensatory changes in mass gain. But if such differences do not map into fitness consequences, they may be of little help to answer the question of whether begging entails direct growth costs.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/139987
url http://hdl.handle.net/10261/139987
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1093/beheco/arw045
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869423502610661376
score 15,198674

Registros relacionados