Tempo and Pattern of Avian Brain Size Evolution
- Autores
- Ksepka, Daniel T.; Balanoff, Amy M.; Smith, N. Adam; Bever, Gabriel S.; Bhullar, Bhart Anjan S.; Bourdon, Estelle; Braun, Edward L.; Burleigh, J. Gordon; Clarke, Julia A.; Colbert, Matthew W.; Corfield, Jeremy R.; Degrange, Federico Javier; De Pietri, Vanesa L.; Early, Catherine M.; Field, Daniel J.; Gignac, Paul M.; Gold, Maria Eugenia Leone; Kimball, Rebecca T.; Kawabe, Soichiro; Lefebvre, Louis; Marugán Lobón, Jesús; Mongle, Carrie S.; Morhardt, Ashley; Norell, Mark A.; Ridgely, Ryan C.; Rothman, Ryan S.; Scofield, R. Paul; Tambussi, Claudia Patricia; Torres, Christopher R.; van Tuinen, Marcel; Walsh, Stig A.; Watanabe, Akinobu; Witmer, Lawrence; Wright, Alexandra K.; Zanno, Lindsay E.; Jarvis, Erich D.; Smaers, Jeroen B.
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Relative brain sizes in birds can rival those of primates, but large-scale patterns and drivers of avian brain evolution remain elusive. Here, we explore the evolution of the fundamental brain-body scaling relationship across the origin and evolution of birds. Using a comprehensive dataset sampling> 2,000 modern birds, fossil birds, and theropod dinosaurs, we infer patterns of brain-body co-variation in deep time. Our study confirms that no significant increase in relative brain size accompanied the trend toward miniaturization or evolution of flight during the theropod-bird transition. Critically, however, theropods and basal birds show weaker integration between brain size and body size, allowing for rapid changes in the brain-body relationship that set the stage for dramatic shifts in early crown birds. We infer that major shifts occurred rapidly in the aftermath of the Cretaceous-Paleogene mass extinction within Neoaves, in which multiple clades achieved higher relative brain sizes because of a reduction in body size. Parrots and corvids achieved the largest brains observed in birds via markedly different patterns. Parrots primarily reduced their body size, whereas corvids increased body and brain size simultaneously (with rates of brain size evolution outpacing rates of body size evolution). Collectively, these patterns suggest that an early adaptive radiation in brain size laid the foundation for subsequent selection and stabilization.
Fil: Ksepka, Daniel T.. Bruce Museum; Estados Unidos. American Museum of Natural History; Estados Unidos. Field Museum of Natural History; Estados Unidos. Smithsonian Institution; Estados Unidos
Fil: Balanoff, Amy M.. University Johns Hopkins; Estados Unidos. American Museum of Natural History; Estados Unidos
Fil: Smith, N. Adam. Field Museum of Natural History; Estados Unidos. Clemson University; Estados Unidos
Fil: Bever, Gabriel S.. American Museum of Natural History; Estados Unidos. Johns Hopkins University; Estados Unidos
Fil: Bhullar, Bhart Anjan S.. University of Yale; Estados Unidos
Fil: Bourdon, Estelle. Museum National Dhistoire Naturelle; Francia
Fil: Braun, Edward L.. University of Florida; Estados Unidos
Fil: Burleigh, J. Gordon. University of Florida; Estados Unidos
Fil: Clarke, Julia A.. University of Texas at Austin; Estados Unidos
Fil: Colbert, Matthew W.. University of Texas at Austin; Estados Unidos
Fil: Corfield, Jeremy R.. Salisbury University; Estados Unidos
Fil: Degrange, Federico Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: De Pietri, Vanesa L.. Canterbury Museum; Nueva Zelanda
Fil: Early, Catherine M.. Ohio University; Estados Unidos. University of Florida. Florida Museum of Natural History; Estados Unidos
Fil: Field, Daniel J.. University of Cambridge; Reino Unido
Fil: Gignac, Paul M.. Oklahoma State University; Estados Unidos
Fil: Gold, Maria Eugenia Leone. American Museum of Natural History; Estados Unidos. Oklahoma State University Center for Health Sciences; Estados Unidos
Fil: Kimball, Rebecca T.. Stony Brook University; Estados Unidos
Fil: Kawabe, Soichiro. Fukui Prefectural Dinosaur Museum; Japón
Fil: Lefebvre, Louis. McGill University; Canadá
Fil: Marugán Lobón, Jesús. Universidad Autónoma de Madrid; España. Natural History Museum of Los Angeles; Estados Unidos
Fil: Mongle, Carrie S.. American Museum of Natural History; Estados Unidos
Fil: Morhardt, Ashley. University of Washington. School of Medicine; Estados Unidos
Fil: Norell, Mark A.. American Museum of Natural History; Estados Unidos
Fil: Ridgely, Ryan C.. Ohio University; Estados Unidos
Fil: Rothman, Ryan S.. Stony Brook University; Estados Unidos
Fil: Scofield, R. Paul. Canterbury Museum; Nueva Zelanda
Fil: Tambussi, Claudia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Torres, Christopher R.. University of Texas at Austin; Estados Unidos
Fil: van Tuinen, Marcel. Leiden University. Leiden University Medical Center.; Países Bajos
Fil: Walsh, Stig A.. National Museum of Scotland; Reino Unido
Fil: Watanabe, Akinobu. American Museum of Natural History; Estados Unidos. College of Osteopathic Medicine. New York Institute of Technology; Estados Unidos. Natural History Museum; Reino Unido
Fil: Witmer, Lawrence. Ohio University; Estados Unidos
Fil: Wright, Alexandra K.. University of St. Andrews; Reino Unido
Fil: Zanno, Lindsay E.. North Carolina State University; Estados Unidos
Fil: Jarvis, Erich D.. The Rockefeller University; Estados Unidos. The Howard Hughes Medical Institute; Estados Unidos
Fil: Smaers, Jeroen B.. Stony Brook University; Estados Unidos. American Museum of Natural History; Estados Unidos - Materia
-
ALLOMETRY
AVES
CO-VARIATION
ENCEPHALIZATION
ENDOCAST
NEUROBIOLOGY
PALEONTOLOGY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/141993
Ver los metadatos del registro completo
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Tempo and Pattern of Avian Brain Size EvolutionKsepka, Daniel T.Balanoff, Amy M.Smith, N. AdamBever, Gabriel S.Bhullar, Bhart Anjan S.Bourdon, EstelleBraun, Edward L.Burleigh, J. GordonClarke, Julia A.Colbert, Matthew W.Corfield, Jeremy R.Degrange, Federico JavierDe Pietri, Vanesa L.Early, Catherine M.Field, Daniel J.Gignac, Paul M.Gold, Maria Eugenia LeoneKimball, Rebecca T.Kawabe, SoichiroLefebvre, LouisMarugán Lobón, JesúsMongle, Carrie S.Morhardt, AshleyNorell, Mark A.Ridgely, Ryan C.Rothman, Ryan S.Scofield, R. PaulTambussi, Claudia PatriciaTorres, Christopher R.van Tuinen, MarcelWalsh, Stig A.Watanabe, AkinobuWitmer, LawrenceWright, Alexandra K.Zanno, Lindsay E.Jarvis, Erich D.Smaers, Jeroen B.ALLOMETRYAVESCO-VARIATIONENCEPHALIZATIONENDOCASTNEUROBIOLOGYPALEONTOLOGYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Relative brain sizes in birds can rival those of primates, but large-scale patterns and drivers of avian brain evolution remain elusive. Here, we explore the evolution of the fundamental brain-body scaling relationship across the origin and evolution of birds. Using a comprehensive dataset sampling> 2,000 modern birds, fossil birds, and theropod dinosaurs, we infer patterns of brain-body co-variation in deep time. Our study confirms that no significant increase in relative brain size accompanied the trend toward miniaturization or evolution of flight during the theropod-bird transition. Critically, however, theropods and basal birds show weaker integration between brain size and body size, allowing for rapid changes in the brain-body relationship that set the stage for dramatic shifts in early crown birds. We infer that major shifts occurred rapidly in the aftermath of the Cretaceous-Paleogene mass extinction within Neoaves, in which multiple clades achieved higher relative brain sizes because of a reduction in body size. Parrots and corvids achieved the largest brains observed in birds via markedly different patterns. Parrots primarily reduced their body size, whereas corvids increased body and brain size simultaneously (with rates of brain size evolution outpacing rates of body size evolution). Collectively, these patterns suggest that an early adaptive radiation in brain size laid the foundation for subsequent selection and stabilization.Fil: Ksepka, Daniel T.. Bruce Museum; Estados Unidos. American Museum of Natural History; Estados Unidos. Field Museum of Natural History; Estados Unidos. Smithsonian Institution; Estados UnidosFil: Balanoff, Amy M.. University Johns Hopkins; Estados Unidos. American Museum of Natural History; Estados UnidosFil: Smith, N. Adam. Field Museum of Natural History; Estados Unidos. Clemson University; Estados UnidosFil: Bever, Gabriel S.. American Museum of Natural History; Estados Unidos. Johns Hopkins University; Estados UnidosFil: Bhullar, Bhart Anjan S.. University of Yale; Estados UnidosFil: Bourdon, Estelle. Museum National Dhistoire Naturelle; FranciaFil: Braun, Edward L.. University of Florida; Estados UnidosFil: Burleigh, J. Gordon. University of Florida; Estados UnidosFil: Clarke, Julia A.. University of Texas at Austin; Estados UnidosFil: Colbert, Matthew W.. University of Texas at Austin; Estados UnidosFil: Corfield, Jeremy R.. Salisbury University; Estados UnidosFil: Degrange, Federico Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: De Pietri, Vanesa L.. Canterbury Museum; Nueva ZelandaFil: Early, Catherine M.. Ohio University; Estados Unidos. University of Florida. Florida Museum of Natural History; Estados UnidosFil: Field, Daniel J.. University of Cambridge; Reino UnidoFil: Gignac, Paul M.. Oklahoma State University; Estados UnidosFil: Gold, Maria Eugenia Leone. American Museum of Natural History; Estados Unidos. Oklahoma State University Center for Health Sciences; Estados UnidosFil: Kimball, Rebecca T.. Stony Brook University; Estados UnidosFil: Kawabe, Soichiro. Fukui Prefectural Dinosaur Museum; JapónFil: Lefebvre, Louis. McGill University; CanadáFil: Marugán Lobón, Jesús. Universidad Autónoma de Madrid; España. Natural History Museum of Los Angeles; Estados UnidosFil: Mongle, Carrie S.. American Museum of Natural History; Estados UnidosFil: Morhardt, Ashley. University of Washington. School of Medicine; Estados UnidosFil: Norell, Mark A.. American Museum of Natural History; Estados UnidosFil: Ridgely, Ryan C.. Ohio University; Estados UnidosFil: Rothman, Ryan S.. Stony Brook University; Estados UnidosFil: Scofield, R. Paul. Canterbury Museum; Nueva ZelandaFil: Tambussi, Claudia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Torres, Christopher R.. University of Texas at Austin; Estados UnidosFil: van Tuinen, Marcel. Leiden University. Leiden University Medical Center.; Países BajosFil: Walsh, Stig A.. National Museum of Scotland; Reino UnidoFil: Watanabe, Akinobu. American Museum of Natural History; Estados Unidos. College of Osteopathic Medicine. New York Institute of Technology; Estados Unidos. Natural History Museum; Reino UnidoFil: Witmer, Lawrence. Ohio University; Estados UnidosFil: Wright, Alexandra K.. University of St. Andrews; Reino UnidoFil: Zanno, Lindsay E.. North Carolina State University; Estados UnidosFil: Jarvis, Erich D.. The Rockefeller University; Estados Unidos. The Howard Hughes Medical Institute; Estados UnidosFil: Smaers, Jeroen B.. Stony Brook University; Estados Unidos. American Museum of Natural History; Estados UnidosCell Press2020-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/141993Ksepka, Daniel T.; Balanoff, Amy M.; Smith, N. Adam; Bever, Gabriel S.; Bhullar, Bhart Anjan S.; et al.; Tempo and Pattern of Avian Brain Size Evolution; Cell Press; Current Biology; 30; 11; 6-2020; 2026-20360960-9822CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.cell.com/current-biology/fulltext/S0960-9822(20)30430-9info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cub.2020.03.060info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:29:53Zoai:ri.conicet.gov.ar:11336/141993instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:29:54.118CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Tempo and Pattern of Avian Brain Size Evolution |
| title |
Tempo and Pattern of Avian Brain Size Evolution |
| spellingShingle |
Tempo and Pattern of Avian Brain Size Evolution Ksepka, Daniel T. ALLOMETRY AVES CO-VARIATION ENCEPHALIZATION ENDOCAST NEUROBIOLOGY PALEONTOLOGY |
| title_short |
Tempo and Pattern of Avian Brain Size Evolution |
| title_full |
Tempo and Pattern of Avian Brain Size Evolution |
| title_fullStr |
Tempo and Pattern of Avian Brain Size Evolution |
| title_full_unstemmed |
Tempo and Pattern of Avian Brain Size Evolution |
| title_sort |
Tempo and Pattern of Avian Brain Size Evolution |
| dc.creator.none.fl_str_mv |
Ksepka, Daniel T. Balanoff, Amy M. Smith, N. Adam Bever, Gabriel S. Bhullar, Bhart Anjan S. Bourdon, Estelle Braun, Edward L. Burleigh, J. Gordon Clarke, Julia A. Colbert, Matthew W. Corfield, Jeremy R. Degrange, Federico Javier De Pietri, Vanesa L. Early, Catherine M. Field, Daniel J. Gignac, Paul M. Gold, Maria Eugenia Leone Kimball, Rebecca T. Kawabe, Soichiro Lefebvre, Louis Marugán Lobón, Jesús Mongle, Carrie S. Morhardt, Ashley Norell, Mark A. Ridgely, Ryan C. Rothman, Ryan S. Scofield, R. Paul Tambussi, Claudia Patricia Torres, Christopher R. van Tuinen, Marcel Walsh, Stig A. Watanabe, Akinobu Witmer, Lawrence Wright, Alexandra K. Zanno, Lindsay E. Jarvis, Erich D. Smaers, Jeroen B. |
| author |
Ksepka, Daniel T. |
| author_facet |
Ksepka, Daniel T. Balanoff, Amy M. Smith, N. Adam Bever, Gabriel S. Bhullar, Bhart Anjan S. Bourdon, Estelle Braun, Edward L. Burleigh, J. Gordon Clarke, Julia A. Colbert, Matthew W. Corfield, Jeremy R. Degrange, Federico Javier De Pietri, Vanesa L. Early, Catherine M. Field, Daniel J. Gignac, Paul M. Gold, Maria Eugenia Leone Kimball, Rebecca T. Kawabe, Soichiro Lefebvre, Louis Marugán Lobón, Jesús Mongle, Carrie S. Morhardt, Ashley Norell, Mark A. Ridgely, Ryan C. Rothman, Ryan S. Scofield, R. Paul Tambussi, Claudia Patricia Torres, Christopher R. van Tuinen, Marcel Walsh, Stig A. Watanabe, Akinobu Witmer, Lawrence Wright, Alexandra K. Zanno, Lindsay E. Jarvis, Erich D. Smaers, Jeroen B. |
| author_role |
author |
| author2 |
Balanoff, Amy M. Smith, N. Adam Bever, Gabriel S. Bhullar, Bhart Anjan S. Bourdon, Estelle Braun, Edward L. Burleigh, J. Gordon Clarke, Julia A. Colbert, Matthew W. Corfield, Jeremy R. Degrange, Federico Javier De Pietri, Vanesa L. Early, Catherine M. Field, Daniel J. Gignac, Paul M. Gold, Maria Eugenia Leone Kimball, Rebecca T. Kawabe, Soichiro Lefebvre, Louis Marugán Lobón, Jesús Mongle, Carrie S. Morhardt, Ashley Norell, Mark A. Ridgely, Ryan C. Rothman, Ryan S. Scofield, R. Paul Tambussi, Claudia Patricia Torres, Christopher R. van Tuinen, Marcel Walsh, Stig A. Watanabe, Akinobu Witmer, Lawrence Wright, Alexandra K. Zanno, Lindsay E. Jarvis, Erich D. Smaers, Jeroen B. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
ALLOMETRY AVES CO-VARIATION ENCEPHALIZATION ENDOCAST NEUROBIOLOGY PALEONTOLOGY |
| topic |
ALLOMETRY AVES CO-VARIATION ENCEPHALIZATION ENDOCAST NEUROBIOLOGY PALEONTOLOGY |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Relative brain sizes in birds can rival those of primates, but large-scale patterns and drivers of avian brain evolution remain elusive. Here, we explore the evolution of the fundamental brain-body scaling relationship across the origin and evolution of birds. Using a comprehensive dataset sampling> 2,000 modern birds, fossil birds, and theropod dinosaurs, we infer patterns of brain-body co-variation in deep time. Our study confirms that no significant increase in relative brain size accompanied the trend toward miniaturization or evolution of flight during the theropod-bird transition. Critically, however, theropods and basal birds show weaker integration between brain size and body size, allowing for rapid changes in the brain-body relationship that set the stage for dramatic shifts in early crown birds. We infer that major shifts occurred rapidly in the aftermath of the Cretaceous-Paleogene mass extinction within Neoaves, in which multiple clades achieved higher relative brain sizes because of a reduction in body size. Parrots and corvids achieved the largest brains observed in birds via markedly different patterns. Parrots primarily reduced their body size, whereas corvids increased body and brain size simultaneously (with rates of brain size evolution outpacing rates of body size evolution). Collectively, these patterns suggest that an early adaptive radiation in brain size laid the foundation for subsequent selection and stabilization. Fil: Ksepka, Daniel T.. Bruce Museum; Estados Unidos. American Museum of Natural History; Estados Unidos. Field Museum of Natural History; Estados Unidos. Smithsonian Institution; Estados Unidos Fil: Balanoff, Amy M.. University Johns Hopkins; Estados Unidos. American Museum of Natural History; Estados Unidos Fil: Smith, N. Adam. Field Museum of Natural History; Estados Unidos. Clemson University; Estados Unidos Fil: Bever, Gabriel S.. American Museum of Natural History; Estados Unidos. Johns Hopkins University; Estados Unidos Fil: Bhullar, Bhart Anjan S.. University of Yale; Estados Unidos Fil: Bourdon, Estelle. Museum National Dhistoire Naturelle; Francia Fil: Braun, Edward L.. University of Florida; Estados Unidos Fil: Burleigh, J. Gordon. University of Florida; Estados Unidos Fil: Clarke, Julia A.. University of Texas at Austin; Estados Unidos Fil: Colbert, Matthew W.. University of Texas at Austin; Estados Unidos Fil: Corfield, Jeremy R.. Salisbury University; Estados Unidos Fil: Degrange, Federico Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina Fil: De Pietri, Vanesa L.. Canterbury Museum; Nueva Zelanda Fil: Early, Catherine M.. Ohio University; Estados Unidos. University of Florida. Florida Museum of Natural History; Estados Unidos Fil: Field, Daniel J.. University of Cambridge; Reino Unido Fil: Gignac, Paul M.. Oklahoma State University; Estados Unidos Fil: Gold, Maria Eugenia Leone. American Museum of Natural History; Estados Unidos. Oklahoma State University Center for Health Sciences; Estados Unidos Fil: Kimball, Rebecca T.. Stony Brook University; Estados Unidos Fil: Kawabe, Soichiro. Fukui Prefectural Dinosaur Museum; Japón Fil: Lefebvre, Louis. McGill University; Canadá Fil: Marugán Lobón, Jesús. Universidad Autónoma de Madrid; España. Natural History Museum of Los Angeles; Estados Unidos Fil: Mongle, Carrie S.. American Museum of Natural History; Estados Unidos Fil: Morhardt, Ashley. University of Washington. School of Medicine; Estados Unidos Fil: Norell, Mark A.. American Museum of Natural History; Estados Unidos Fil: Ridgely, Ryan C.. Ohio University; Estados Unidos Fil: Rothman, Ryan S.. Stony Brook University; Estados Unidos Fil: Scofield, R. Paul. Canterbury Museum; Nueva Zelanda Fil: Tambussi, Claudia Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina Fil: Torres, Christopher R.. University of Texas at Austin; Estados Unidos Fil: van Tuinen, Marcel. Leiden University. Leiden University Medical Center.; Países Bajos Fil: Walsh, Stig A.. National Museum of Scotland; Reino Unido Fil: Watanabe, Akinobu. American Museum of Natural History; Estados Unidos. College of Osteopathic Medicine. New York Institute of Technology; Estados Unidos. Natural History Museum; Reino Unido Fil: Witmer, Lawrence. Ohio University; Estados Unidos Fil: Wright, Alexandra K.. University of St. Andrews; Reino Unido Fil: Zanno, Lindsay E.. North Carolina State University; Estados Unidos Fil: Jarvis, Erich D.. The Rockefeller University; Estados Unidos. The Howard Hughes Medical Institute; Estados Unidos Fil: Smaers, Jeroen B.. Stony Brook University; Estados Unidos. American Museum of Natural History; Estados Unidos |
| description |
Relative brain sizes in birds can rival those of primates, but large-scale patterns and drivers of avian brain evolution remain elusive. Here, we explore the evolution of the fundamental brain-body scaling relationship across the origin and evolution of birds. Using a comprehensive dataset sampling> 2,000 modern birds, fossil birds, and theropod dinosaurs, we infer patterns of brain-body co-variation in deep time. Our study confirms that no significant increase in relative brain size accompanied the trend toward miniaturization or evolution of flight during the theropod-bird transition. Critically, however, theropods and basal birds show weaker integration between brain size and body size, allowing for rapid changes in the brain-body relationship that set the stage for dramatic shifts in early crown birds. We infer that major shifts occurred rapidly in the aftermath of the Cretaceous-Paleogene mass extinction within Neoaves, in which multiple clades achieved higher relative brain sizes because of a reduction in body size. Parrots and corvids achieved the largest brains observed in birds via markedly different patterns. Parrots primarily reduced their body size, whereas corvids increased body and brain size simultaneously (with rates of brain size evolution outpacing rates of body size evolution). Collectively, these patterns suggest that an early adaptive radiation in brain size laid the foundation for subsequent selection and stabilization. |
| publishDate |
2020 |
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2020-06 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/141993 Ksepka, Daniel T.; Balanoff, Amy M.; Smith, N. Adam; Bever, Gabriel S.; Bhullar, Bhart Anjan S.; et al.; Tempo and Pattern of Avian Brain Size Evolution; Cell Press; Current Biology; 30; 11; 6-2020; 2026-2036 0960-9822 CONICET Digital CONICET |
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http://hdl.handle.net/11336/141993 |
| identifier_str_mv |
Ksepka, Daniel T.; Balanoff, Amy M.; Smith, N. Adam; Bever, Gabriel S.; Bhullar, Bhart Anjan S.; et al.; Tempo and Pattern of Avian Brain Size Evolution; Cell Press; Current Biology; 30; 11; 6-2020; 2026-2036 0960-9822 CONICET Digital CONICET |
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eng |
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Cell Press |
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