Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1002/ece3.5159 http://hdl.handle.net/11449/185788 |
Resumo: | Identifying the processes that determine avian migratory strategies in different environmental contexts is imperative to understanding the constraints to survival and reproduction faced by migratory birds across the planet. We compared the spring migration strategies of Fork-tailed Flycatchers (Tyrannus s. savana) that breed at south-temperate latitudes (i.e., austral migrants) vs. tropical latitudes (i.e., intratropical migrants) in South America. We hypothesized that austral migrant flycatchers are more time-selected than intratropical migrants during spring migration. As such, we predicted that austral migrants, which migrate further than intratropical migrants, will migrate at a faster rate and that the rate of migration for austral migrants will be positively correlated with the onset of spring migration. We attached light-level geolocators to Fork-tailed Flycatchers at two tropical breeding sites in Brazil and at two south-temperate breeding sites in Argentina and tracked their movements until the following breeding season. Of 286 geolocators that were deployed, 37 were recovered similar to 1 year later, of which 28 provided useable data. Rate of spring migration did not differ significantly between the two groups, and only at one site was there a significantly positive relationship between date of initiation of spring migration and arrival date. This represents the first comparison of individual migratory strategies among conspecific passerines breeding at tropical vs. temperate latitudes and suggests that austral migrant Fork-tailed Flycatchers in South America are not more time-selected on spring migration than intratropical migrant conspecifics. Low sample sizes could have diminished our power to detect differences (e.g., between sexes), such that further research into the mechanisms underpinning migratory strategies in this poorly understood system is necessary. |
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Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South AmericaArgentinaBrazilcerradolife historylight-level geolocatorPampasIdentifying the processes that determine avian migratory strategies in different environmental contexts is imperative to understanding the constraints to survival and reproduction faced by migratory birds across the planet. We compared the spring migration strategies of Fork-tailed Flycatchers (Tyrannus s. savana) that breed at south-temperate latitudes (i.e., austral migrants) vs. tropical latitudes (i.e., intratropical migrants) in South America. We hypothesized that austral migrant flycatchers are more time-selected than intratropical migrants during spring migration. As such, we predicted that austral migrants, which migrate further than intratropical migrants, will migrate at a faster rate and that the rate of migration for austral migrants will be positively correlated with the onset of spring migration. We attached light-level geolocators to Fork-tailed Flycatchers at two tropical breeding sites in Brazil and at two south-temperate breeding sites in Argentina and tracked their movements until the following breeding season. Of 286 geolocators that were deployed, 37 were recovered similar to 1 year later, of which 28 provided useable data. Rate of spring migration did not differ significantly between the two groups, and only at one site was there a significantly positive relationship between date of initiation of spring migration and arrival date. This represents the first comparison of individual migratory strategies among conspecific passerines breeding at tropical vs. temperate latitudes and suggests that austral migrant Fork-tailed Flycatchers in South America are not more time-selected on spring migration than intratropical migrant conspecifics. Low sample sizes could have diminished our power to detect differences (e.g., between sexes), such that further research into the mechanisms underpinning migratory strategies in this poorly understood system is necessary.National Science FoundationFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)National Geographic SocietyBrazilian Research CouncilGatorade Fund of the University of FloridaConsejo Nacional de Investigaciones Cientificas y TecnicasUniv Estadual Paulista, Dept Zool, Rio Claro, BrazilUniv Nacl La Pampa, Fac Ciencias Exactas & Nat, La Pampa, ArgentinaConsejo Nacl Invest Cient & Tecn, CIEMEP, Esquel, ArgentinaUniv Nacl Patagonia San Juan Bosco, Esquel, ArgentinaSmithsonian Conservat Biol Inst, Migratory Bird Ctr, Washington, DC USANatl Sci Fdn, Alexandria, VA USAUniv Brasilia, Dept Zool, Brasilia, DF, BrazilUniv Nacl La Plata, Fac Ciencias Nat & Museo, La Plata, Buenos Aires, ArgentinaUniv Nacl La Pampa UNLPam, CECARA, Santa Rosa, La Pampa, ArgentinaConsejo Nacl Invest Cient & Tecn, Inst Ciencias Tierra & Ambientales La Pampa INCIT, Santa Rosa, La Pampa, ArgentinaUBA, CONICET, Dept Ecol Genet & Evoluc, Fac Ciencias Exactas & Nat, Buenos Aires, DF, ArgentinaUniv Estadual Paulista, Dept Zool, Rio Claro, BrazilNational Science Foundation: IRFP-0965213FAPESP: 2012/17225-2FAPESP: 2013/19116-9National Geographic Society: 8444-08National Geographic Society: 8953-11Brazilian Research Council: CNPq 304244/2016-3Wiley-BlackwellUniversidade Estadual Paulista (Unesp)Univ Nacl La PampaConsejo Nacl Invest Cient & TecnUniv Nacl Patagonia San Juan BoscoSmithsonian Conservat Biol InstNatl Sci FdnUniversidade de Brasília (UnB)Univ Nacl La PlataUniv Nacl La Pampa UNLPamUBAJahn, Alex E. [UNESP]Cereghetti, JoaquinCueto, Victor R.Hallworth, Michael T.Levey, Douglas J.Marini, Miguel A.Masson, DiegoPizo, Marco A. [UNESP]Hernan Sarasola, JoseTuero, Diego T.2019-10-04T12:38:39Z2019-10-04T12:38:39Z2019-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article5752-5765http://dx.doi.org/10.1002/ece3.5159Ecology And Evolution. Hoboken: Wiley, v. 9, n. 10, p. 5752-5765, 2019.2045-7758http://hdl.handle.net/11449/18578810.1002/ece3.5159WOS:000470923500017Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEcology And Evolutioninfo:eu-repo/semantics/openAccess2021-10-22T19:03:47Zoai:repositorio.unesp.br:11449/185788Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:19:26.508868Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America |
title |
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America |
spellingShingle |
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America Jahn, Alex E. [UNESP] Argentina Brazil cerrado life history light-level geolocator Pampas |
title_short |
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America |
title_full |
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America |
title_fullStr |
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America |
title_full_unstemmed |
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America |
title_sort |
Breeding latitude predicts timing but not rate of spring migration in a widespread migratory bird in South America |
author |
Jahn, Alex E. [UNESP] |
author_facet |
Jahn, Alex E. [UNESP] Cereghetti, Joaquin Cueto, Victor R. Hallworth, Michael T. Levey, Douglas J. Marini, Miguel A. Masson, Diego Pizo, Marco A. [UNESP] Hernan Sarasola, Jose Tuero, Diego T. |
author_role |
author |
author2 |
Cereghetti, Joaquin Cueto, Victor R. Hallworth, Michael T. Levey, Douglas J. Marini, Miguel A. Masson, Diego Pizo, Marco A. [UNESP] Hernan Sarasola, Jose Tuero, Diego T. |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Univ Nacl La Pampa Consejo Nacl Invest Cient & Tecn Univ Nacl Patagonia San Juan Bosco Smithsonian Conservat Biol Inst Natl Sci Fdn Universidade de Brasília (UnB) Univ Nacl La Plata Univ Nacl La Pampa UNLPam UBA |
dc.contributor.author.fl_str_mv |
Jahn, Alex E. [UNESP] Cereghetti, Joaquin Cueto, Victor R. Hallworth, Michael T. Levey, Douglas J. Marini, Miguel A. Masson, Diego Pizo, Marco A. [UNESP] Hernan Sarasola, Jose Tuero, Diego T. |
dc.subject.por.fl_str_mv |
Argentina Brazil cerrado life history light-level geolocator Pampas |
topic |
Argentina Brazil cerrado life history light-level geolocator Pampas |
description |
Identifying the processes that determine avian migratory strategies in different environmental contexts is imperative to understanding the constraints to survival and reproduction faced by migratory birds across the planet. We compared the spring migration strategies of Fork-tailed Flycatchers (Tyrannus s. savana) that breed at south-temperate latitudes (i.e., austral migrants) vs. tropical latitudes (i.e., intratropical migrants) in South America. We hypothesized that austral migrant flycatchers are more time-selected than intratropical migrants during spring migration. As such, we predicted that austral migrants, which migrate further than intratropical migrants, will migrate at a faster rate and that the rate of migration for austral migrants will be positively correlated with the onset of spring migration. We attached light-level geolocators to Fork-tailed Flycatchers at two tropical breeding sites in Brazil and at two south-temperate breeding sites in Argentina and tracked their movements until the following breeding season. Of 286 geolocators that were deployed, 37 were recovered similar to 1 year later, of which 28 provided useable data. Rate of spring migration did not differ significantly between the two groups, and only at one site was there a significantly positive relationship between date of initiation of spring migration and arrival date. This represents the first comparison of individual migratory strategies among conspecific passerines breeding at tropical vs. temperate latitudes and suggests that austral migrant Fork-tailed Flycatchers in South America are not more time-selected on spring migration than intratropical migrant conspecifics. Low sample sizes could have diminished our power to detect differences (e.g., between sexes), such that further research into the mechanisms underpinning migratory strategies in this poorly understood system is necessary. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-04T12:38:39Z 2019-10-04T12:38:39Z 2019-05-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1002/ece3.5159 Ecology And Evolution. Hoboken: Wiley, v. 9, n. 10, p. 5752-5765, 2019. 2045-7758 http://hdl.handle.net/11449/185788 10.1002/ece3.5159 WOS:000470923500017 |
url |
http://dx.doi.org/10.1002/ece3.5159 http://hdl.handle.net/11449/185788 |
identifier_str_mv |
Ecology And Evolution. Hoboken: Wiley, v. 9, n. 10, p. 5752-5765, 2019. 2045-7758 10.1002/ece3.5159 WOS:000470923500017 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ecology And Evolution |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
5752-5765 |
dc.publisher.none.fl_str_mv |
Wiley-Blackwell |
publisher.none.fl_str_mv |
Wiley-Blackwell |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128633511870465 |