Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta

Summary Sheldgeese of the genus Chloephaga are waterfowl (Anatidae) endemic to mainland South America and the Falkland Islands (Malvinas). Continental populations of three species C. picta, C. poliocephala, and C. rubidiceps breed in Patagonia and Tierra del Fuego and migrate northwards to winter in...

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Autor principal:	Kopuchian, Cecilia
Publicado:	2014
Materias:	bird breeding population breeding site conservation status endangered species gene flow hunting intrasexual interaction mitochondrial DNA phylogeny population decline population migration species conservation waterfowl Argentina Chile Falkland Islands (Malvinas) Patagonia Tierra del Fuego [(PRV) Argentina] Anser Chloephaga picta Chloephaga rubidiceps
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v24_n1_p59_Bulgarella http://hdl.handle.net/20.500.12110/paper_09592709_v24_n1_p59_Bulgarella
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09592709_v24_n1_p59_Bulgarella
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spelling	paper:paper_09592709_v24_n1_p59_Bulgarella2023-06-08T15:56:46Z Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta Kopuchian, Cecilia bird breeding population breeding site conservation status endangered species gene flow hunting intrasexual interaction mitochondrial DNA phylogeny population decline population migration species conservation waterfowl Argentina Chile Falkland Islands (Malvinas) Patagonia Tierra del Fuego [(PRV) Argentina] Anser Chloephaga picta Chloephaga rubidiceps Summary Sheldgeese of the genus Chloephaga are waterfowl (Anatidae) endemic to mainland South America and the Falkland Islands (Malvinas). Continental populations of three species C. picta, C. poliocephala, and C. rubidiceps breed in Patagonia and Tierra del Fuego and migrate northwards to winter in central Argentina and Chile. These continental populations have declined by > 50% in the past 30 years due to direct hunting to control crop damage and by the introduction of the grey fox Dusicyon griseus to their breeding grounds in Tierra del Fuego. The continental population of C. rubidiceps is critically endangered, estimated to be < 1,000 individuals. While no historic population size estimates exist for C. rubidiceps in its wintering grounds, the breeding population in Tierra del Fuego was estimated to number several thousand individuals in the 1950s. In contrast, the C. rubidiceps population in the Falkland Islands (Malvinas) is non-migratory and stable with > 42,000 individuals, as is the Falkland Islands (Malvinas) population of C. picta leucoptera with > 138,000 individuals. Here we use sequence data from the mitochondrial DNA control region to quantify genetic divergence between insular and continental populations of these two species of sheldgeese. Chloephaga rubidiceps and C. picta showed significant intraspecific differentiation of 1.0% and 0.6%, respectively. In both cases, mainland and insular populations were reciprocally monophyletic and did not share mtDNA haplotypes. These results suggest that the insular and continental populations of C. rubidiceps and C. picta are genetically distinct and that female-mediated gene flow is restricted. We recommend a reevaluation of the threat category status of the continental C. rubidiceps population, under IUCN guidelines. It is necessary to implement urgent actions for the conservation of this critically endangered population. © BirdLife International 2013. Fil:Kopuchian, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v24_n1_p59_Bulgarella http://hdl.handle.net/20.500.12110/paper_09592709_v24_n1_p59_Bulgarella
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	bird breeding population breeding site conservation status endangered species gene flow hunting intrasexual interaction mitochondrial DNA phylogeny population decline population migration species conservation waterfowl Argentina Chile Falkland Islands (Malvinas) Patagonia Tierra del Fuego [(PRV) Argentina] Anser Chloephaga picta Chloephaga rubidiceps
spellingShingle	bird breeding population breeding site conservation status endangered species gene flow hunting intrasexual interaction mitochondrial DNA phylogeny population decline population migration species conservation waterfowl Argentina Chile Falkland Islands (Malvinas) Patagonia Tierra del Fuego [(PRV) Argentina] Anser Chloephaga picta Chloephaga rubidiceps Kopuchian, Cecilia Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta
topic_facet	bird breeding population breeding site conservation status endangered species gene flow hunting intrasexual interaction mitochondrial DNA phylogeny population decline population migration species conservation waterfowl Argentina Chile Falkland Islands (Malvinas) Patagonia Tierra del Fuego [(PRV) Argentina] Anser Chloephaga picta Chloephaga rubidiceps
description	Summary Sheldgeese of the genus Chloephaga are waterfowl (Anatidae) endemic to mainland South America and the Falkland Islands (Malvinas). Continental populations of three species C. picta, C. poliocephala, and C. rubidiceps breed in Patagonia and Tierra del Fuego and migrate northwards to winter in central Argentina and Chile. These continental populations have declined by > 50% in the past 30 years due to direct hunting to control crop damage and by the introduction of the grey fox Dusicyon griseus to their breeding grounds in Tierra del Fuego. The continental population of C. rubidiceps is critically endangered, estimated to be < 1,000 individuals. While no historic population size estimates exist for C. rubidiceps in its wintering grounds, the breeding population in Tierra del Fuego was estimated to number several thousand individuals in the 1950s. In contrast, the C. rubidiceps population in the Falkland Islands (Malvinas) is non-migratory and stable with > 42,000 individuals, as is the Falkland Islands (Malvinas) population of C. picta leucoptera with > 138,000 individuals. Here we use sequence data from the mitochondrial DNA control region to quantify genetic divergence between insular and continental populations of these two species of sheldgeese. Chloephaga rubidiceps and C. picta showed significant intraspecific differentiation of 1.0% and 0.6%, respectively. In both cases, mainland and insular populations were reciprocally monophyletic and did not share mtDNA haplotypes. These results suggest that the insular and continental populations of C. rubidiceps and C. picta are genetically distinct and that female-mediated gene flow is restricted. We recommend a reevaluation of the threat category status of the continental C. rubidiceps population, under IUCN guidelines. It is necessary to implement urgent actions for the conservation of this critically endangered population. © BirdLife International 2013.
author	Kopuchian, Cecilia
author_facet	Kopuchian, Cecilia
author_sort	Kopuchian, Cecilia
title	Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta
title_short	Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta
title_full	Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta
title_fullStr	Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta
title_full_unstemmed	Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta
title_sort	molecular phylogeny of the south american sheldgeese with implications for conservation of falkland islands (malvinas) and continental populations of the ruddy-headed goose chloephaga rubidiceps and upland goose c. picta
publishDate	2014
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09592709_v24_n1_p59_Bulgarella http://hdl.handle.net/20.500.12110/paper_09592709_v24_n1_p59_Bulgarella
work_keys_str_mv	AT kopuchiancecilia molecularphylogenyofthesouthamericansheldgeesewithimplicationsforconservationoffalklandislandsmalvinasandcontinentalpopulationsoftheruddyheadedgoosechloephagarubidicepsanduplandgoosecpicta
_version_	1768546168417026048

Molecular phylogeny of the South American sheldgeese with implications for conservation of Falkland Islands (Malvinas) and continental populations of the Ruddy-headed Goose Chloephaga rubidiceps and Upland Goose C. picta

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