The role of glacial cycles on the diversification and speciation of the birds of southern South America

Autores
Lijtmaer, Dario A; Bukowski, Belen; Lavinia, Pablo; Casale, Agustin I; Fracas, Pablo A; Campagna, Leonardo; Tubaro, Pablo L.
Año de publicación
2023
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión aceptada
Descripción
Fil: Lijtmaer Dario A. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Fil: Bukowski Belen. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Fil: Lavinia Pablo D. Laboratorio de Investigación y Conservación de la Biodiversidad (UNRN-InCoBIO), Universidad Nacional de Río Negro, Viedma, Argentina; Universidad Nacional de Río Negro, CIT Río Negro (UNRN-CONICET), Viedma, Argentina
Fil: Casale Agustin I. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Fil: Fracas Pablo A. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Fil: Campagna Leonardo. Cornell Lab of Ornithology, Ithaca, NY, Estados Unidos
Fil: Tubaro Pablo L. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Glacial cycles have been a key driver of speciation in the Nearctic, but they had a milder effect in most of the Neotropics. We are studying their relevance in the temperate south of South America at different geographic and taxonomic scales. The analysis of 235 avian sister species pairs showed that the Andean-Patagonian region has a higher proportion of young species (i.e. originated in the Pleistocene) than the rest of the Neotropics, suggesting a relevant effect of glaciations. Detailed analyses of the Southern Lapwing (Vanellus chilensis), the Rufous-collared Sparrow (Zonotrichia capensis) and the House Wren (Troglodytes aedon) were consistent with a significant role of glaciations. Lineages restricted to Patagonia were found in the three species, although with differences in the timing of their separation. In addition to genetic differences, in the Southern Lapwing and the Rufous-collared Sparrow the Patagonian lineages differ in morphology and/or song. In the latter, in fact, the recently originated Patagonian subspecies is the most differentiated in coloration, a consequence of differences in a single genomic area that contains ST5, a gene involved in the regulation of melanogenesis. In the House Wren, the colonization of the Malvinas Islands from Patagonia and the lack of further gene flow with the continent led to speciation in the insular population, originating T. cobbii. In spite of these differences among species, northward postglacial expansions from Patagonia led to secondary contact in the three of them, promoting gene flow and intermediate color or vocal traits. The results of this study highlight the relevance of glaciations for avian diversification and speciation in southern South America.
Materia
Ciencias Exactas y Naturales
glacial cycles
genomics
patagonia
birds
Ciencias Exactas y Naturales
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/13350

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network_name_str RID-UNRN (UNRN)
spelling The role of glacial cycles on the diversification and speciation of the birds of southern South AmericaLijtmaer, Dario ABukowski, BelenLavinia, PabloCasale, Agustin IFracas, Pablo ACampagna, LeonardoTubaro, Pablo L.Ciencias Exactas y Naturalesglacial cyclesgenomicspatagoniabirdsCiencias Exactas y NaturalesFil: Lijtmaer Dario A. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, ArgentinaFil: Bukowski Belen. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, ArgentinaFil: Lavinia Pablo D. Laboratorio de Investigación y Conservación de la Biodiversidad (UNRN-InCoBIO), Universidad Nacional de Río Negro, Viedma, Argentina; Universidad Nacional de Río Negro, CIT Río Negro (UNRN-CONICET), Viedma, ArgentinaFil: Casale Agustin I. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, ArgentinaFil: Fracas Pablo A. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, ArgentinaFil: Campagna Leonardo. Cornell Lab of Ornithology, Ithaca, NY, Estados UnidosFil: Tubaro Pablo L. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, ArgentinaGlacial cycles have been a key driver of speciation in the Nearctic, but they had a milder effect in most of the Neotropics. We are studying their relevance in the temperate south of South America at different geographic and taxonomic scales. The analysis of 235 avian sister species pairs showed that the Andean-Patagonian region has a higher proportion of young species (i.e. originated in the Pleistocene) than the rest of the Neotropics, suggesting a relevant effect of glaciations. Detailed analyses of the Southern Lapwing (Vanellus chilensis), the Rufous-collared Sparrow (Zonotrichia capensis) and the House Wren (Troglodytes aedon) were consistent with a significant role of glaciations. Lineages restricted to Patagonia were found in the three species, although with differences in the timing of their separation. In addition to genetic differences, in the Southern Lapwing and the Rufous-collared Sparrow the Patagonian lineages differ in morphology and/or song. In the latter, in fact, the recently originated Patagonian subspecies is the most differentiated in coloration, a consequence of differences in a single genomic area that contains ST5, a gene involved in the regulation of melanogenesis. In the House Wren, the colonization of the Malvinas Islands from Patagonia and the lack of further gene flow with the continent led to speciation in the insular population, originating T. cobbii. In spite of these differences among species, northward postglacial expansions from Patagonia led to secondary contact in the three of them, promoting gene flow and intermediate color or vocal traits. The results of this study highlight the relevance of glaciations for avian diversification and speciation in southern South America.2023-08info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://rid.unrn.edu.ar/handle/20.500.12049/13350engAOS & SCO-SOC Ornithological Conferenceinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:33Zoai:rid.unrn.edu.ar:20.500.12049/13350instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:33.382RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv The role of glacial cycles on the diversification and speciation of the birds of southern South America
title The role of glacial cycles on the diversification and speciation of the birds of southern South America
spellingShingle The role of glacial cycles on the diversification and speciation of the birds of southern South America
Lijtmaer, Dario A
Ciencias Exactas y Naturales
glacial cycles
genomics
patagonia
birds
Ciencias Exactas y Naturales
title_short The role of glacial cycles on the diversification and speciation of the birds of southern South America
title_full The role of glacial cycles on the diversification and speciation of the birds of southern South America
title_fullStr The role of glacial cycles on the diversification and speciation of the birds of southern South America
title_full_unstemmed The role of glacial cycles on the diversification and speciation of the birds of southern South America
title_sort The role of glacial cycles on the diversification and speciation of the birds of southern South America
dc.creator.none.fl_str_mv Lijtmaer, Dario A
Bukowski, Belen
Lavinia, Pablo
Casale, Agustin I
Fracas, Pablo A
Campagna, Leonardo
Tubaro, Pablo L.
author Lijtmaer, Dario A
author_facet Lijtmaer, Dario A
Bukowski, Belen
Lavinia, Pablo
Casale, Agustin I
Fracas, Pablo A
Campagna, Leonardo
Tubaro, Pablo L.
author_role author
author2 Bukowski, Belen
Lavinia, Pablo
Casale, Agustin I
Fracas, Pablo A
Campagna, Leonardo
Tubaro, Pablo L.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales
glacial cycles
genomics
patagonia
birds
Ciencias Exactas y Naturales
topic Ciencias Exactas y Naturales
glacial cycles
genomics
patagonia
birds
Ciencias Exactas y Naturales
dc.description.none.fl_txt_mv Fil: Lijtmaer Dario A. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Fil: Bukowski Belen. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Fil: Lavinia Pablo D. Laboratorio de Investigación y Conservación de la Biodiversidad (UNRN-InCoBIO), Universidad Nacional de Río Negro, Viedma, Argentina; Universidad Nacional de Río Negro, CIT Río Negro (UNRN-CONICET), Viedma, Argentina
Fil: Casale Agustin I. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Fil: Fracas Pablo A. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Fil: Campagna Leonardo. Cornell Lab of Ornithology, Ithaca, NY, Estados Unidos
Fil: Tubaro Pablo L. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
Glacial cycles have been a key driver of speciation in the Nearctic, but they had a milder effect in most of the Neotropics. We are studying their relevance in the temperate south of South America at different geographic and taxonomic scales. The analysis of 235 avian sister species pairs showed that the Andean-Patagonian region has a higher proportion of young species (i.e. originated in the Pleistocene) than the rest of the Neotropics, suggesting a relevant effect of glaciations. Detailed analyses of the Southern Lapwing (Vanellus chilensis), the Rufous-collared Sparrow (Zonotrichia capensis) and the House Wren (Troglodytes aedon) were consistent with a significant role of glaciations. Lineages restricted to Patagonia were found in the three species, although with differences in the timing of their separation. In addition to genetic differences, in the Southern Lapwing and the Rufous-collared Sparrow the Patagonian lineages differ in morphology and/or song. In the latter, in fact, the recently originated Patagonian subspecies is the most differentiated in coloration, a consequence of differences in a single genomic area that contains ST5, a gene involved in the regulation of melanogenesis. In the House Wren, the colonization of the Malvinas Islands from Patagonia and the lack of further gene flow with the continent led to speciation in the insular population, originating T. cobbii. In spite of these differences among species, northward postglacial expansions from Patagonia led to secondary contact in the three of them, promoting gene flow and intermediate color or vocal traits. The results of this study highlight the relevance of glaciations for avian diversification and speciation in southern South America.
description Fil: Lijtmaer Dario A. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia", CABA, Argentina
publishDate 2023
dc.date.none.fl_str_mv 2023-08
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://rid.unrn.edu.ar/handle/20.500.12049/13350
url http://rid.unrn.edu.ar/handle/20.500.12049/13350
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv AOS & SCO-SOC Ornithological Conference
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
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instname:Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
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instname_str Universidad Nacional de Río Negro
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
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