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
- Institución
- Universidad Nacional de Río Negro
- OAI Identificador
- oai:rid.unrn.edu.ar:20.500.12049/13350
Ver los metadatos del registro completo
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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 |
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eng |
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eng |
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AOS & SCO-SOC Ornithological Conference |
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