Chinstrap penguin population genetic structure: one or more populations along the Southern Ocean?
Abstract Background Historical factors, demography, reproduction and dispersal are crucial in determining the genetic structure of seabirds. In the Antarctic marine environment, penguins are a major component of the avian biomass, dominant predators and important bioindicators of ecological change....
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ftdatacite:10.6084/m9.figshare.c.4133468 2023-05-15T13:33:58+02:00 Chinstrap penguin population genetic structure: one or more populations along the Southern Ocean? Mura-Jornet, Isidora Pimentel, Carolina Gisele Dantas Petry, Maria González-Acuña, Daniel Barbosa, Andrés Lowther, Andrew Kovacs, Kit Poulin, Elie Vianna, Juliana 2018 https://dx.doi.org/10.6084/m9.figshare.c.4133468 https://figshare.com/collections/Chinstrap_penguin_population_genetic_structure_one_or_more_populations_along_the_Southern_Ocean_/4133468/1 unknown Figshare https://dx.doi.org/10.1186/s12862-018-1207-0 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Genetics FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology Marine Biology Inorganic Chemistry FOS Chemical sciences Collection article 2018 ftdatacite https://doi.org/10.6084/m9.figshare.c.4133468 https://doi.org/10.1186/s12862-018-1207-0 2021-11-05T12:55:41Z Abstract Background Historical factors, demography, reproduction and dispersal are crucial in determining the genetic structure of seabirds. In the Antarctic marine environment, penguins are a major component of the avian biomass, dominant predators and important bioindicators of ecological change. Populations of chinstrap penguins have decreased in nearly all their breeding sites, and their range is expanding throughout the Antarctic Peninsula. Population genetic structure of this species has been studied in some colonies, but not between breeding colonies in the Antarctic Peninsula or at the species’ easternmost breeding colony (Bouvetøya). Results Connectivity, sex-biased dispersal, diversity, genetic structure and demographic history were studied using 12 microsatellite loci and a mitochondrial DNA region (HVRI) in 12 breeding colonies in the South Shetland Islands (SSI) and the Western Antarctic Peninsula (WAP), and one previously unstudied sub-Antarctic island, 3600 km away from the WAP (Bouvetøya). High genetic diversity, evidence of female bias-dispersal and a sign of population expansion after the last glacial maximum around 10,000 mya were detected. Limited population genetic structure and lack of isolation by distance throughout the region were found, along with no differentiation between the WAP and Bouvetøya (overall microsatellite FST = 0.002, p = 0.273; mtDNA FST = − 0.004, p = 0.766), indicating long distance dispersal. Therefore, genetic assignment tests could not assign individuals to their population(s) of origin. The most differentiated location was Georges Point, one of the southernmost breeding colonies of this species in the WAP. Conclusions The subtle differentiation found may be explained by some combination of low natal philopatric behavior, high rates of dispersal and/or generally high mobility among colonies of chinstrap penguins compared to other Pygoscelis species. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Bouvetøya Chinstrap penguin South Shetland Islands Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean The Antarctic Antarctic Peninsula South Shetland Islands Bouvetøya ENVELOPE(3.358,3.358,-54.422,-54.422) Georges Point ENVELOPE(-62.667,-62.667,-64.667,-64.667) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Genetics FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology Marine Biology Inorganic Chemistry FOS Chemical sciences |
spellingShingle |
Genetics FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology Marine Biology Inorganic Chemistry FOS Chemical sciences Mura-Jornet, Isidora Pimentel, Carolina Gisele Dantas Petry, Maria González-Acuña, Daniel Barbosa, Andrés Lowther, Andrew Kovacs, Kit Poulin, Elie Vianna, Juliana Chinstrap penguin population genetic structure: one or more populations along the Southern Ocean? |
topic_facet |
Genetics FOS Biological sciences Evolutionary Biology 59999 Environmental Sciences not elsewhere classified FOS Earth and related environmental sciences Ecology Marine Biology Inorganic Chemistry FOS Chemical sciences |
description |
Abstract Background Historical factors, demography, reproduction and dispersal are crucial in determining the genetic structure of seabirds. In the Antarctic marine environment, penguins are a major component of the avian biomass, dominant predators and important bioindicators of ecological change. Populations of chinstrap penguins have decreased in nearly all their breeding sites, and their range is expanding throughout the Antarctic Peninsula. Population genetic structure of this species has been studied in some colonies, but not between breeding colonies in the Antarctic Peninsula or at the species’ easternmost breeding colony (Bouvetøya). Results Connectivity, sex-biased dispersal, diversity, genetic structure and demographic history were studied using 12 microsatellite loci and a mitochondrial DNA region (HVRI) in 12 breeding colonies in the South Shetland Islands (SSI) and the Western Antarctic Peninsula (WAP), and one previously unstudied sub-Antarctic island, 3600 km away from the WAP (Bouvetøya). High genetic diversity, evidence of female bias-dispersal and a sign of population expansion after the last glacial maximum around 10,000 mya were detected. Limited population genetic structure and lack of isolation by distance throughout the region were found, along with no differentiation between the WAP and Bouvetøya (overall microsatellite FST = 0.002, p = 0.273; mtDNA FST = − 0.004, p = 0.766), indicating long distance dispersal. Therefore, genetic assignment tests could not assign individuals to their population(s) of origin. The most differentiated location was Georges Point, one of the southernmost breeding colonies of this species in the WAP. Conclusions The subtle differentiation found may be explained by some combination of low natal philopatric behavior, high rates of dispersal and/or generally high mobility among colonies of chinstrap penguins compared to other Pygoscelis species. |
format |
Article in Journal/Newspaper |
author |
Mura-Jornet, Isidora Pimentel, Carolina Gisele Dantas Petry, Maria González-Acuña, Daniel Barbosa, Andrés Lowther, Andrew Kovacs, Kit Poulin, Elie Vianna, Juliana |
author_facet |
Mura-Jornet, Isidora Pimentel, Carolina Gisele Dantas Petry, Maria González-Acuña, Daniel Barbosa, Andrés Lowther, Andrew Kovacs, Kit Poulin, Elie Vianna, Juliana |
author_sort |
Mura-Jornet, Isidora |
title |
Chinstrap penguin population genetic structure: one or more populations along the Southern Ocean? |
title_short |
Chinstrap penguin population genetic structure: one or more populations along the Southern Ocean? |
title_full |
Chinstrap penguin population genetic structure: one or more populations along the Southern Ocean? |
title_fullStr |
Chinstrap penguin population genetic structure: one or more populations along the Southern Ocean? |
title_full_unstemmed |
Chinstrap penguin population genetic structure: one or more populations along the Southern Ocean? |
title_sort |
chinstrap penguin population genetic structure: one or more populations along the southern ocean? |
publisher |
Figshare |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4133468 https://figshare.com/collections/Chinstrap_penguin_population_genetic_structure_one_or_more_populations_along_the_Southern_Ocean_/4133468/1 |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) ENVELOPE(-62.667,-62.667,-64.667,-64.667) |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula South Shetland Islands Bouvetøya Georges Point |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula South Shetland Islands Bouvetøya Georges Point |
genre |
Antarc* Antarctic Antarctic Peninsula Bouvetøya Chinstrap penguin South Shetland Islands Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Bouvetøya Chinstrap penguin South Shetland Islands Southern Ocean |
op_relation |
https://dx.doi.org/10.1186/s12862-018-1207-0 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4133468 https://doi.org/10.1186/s12862-018-1207-0 |
_version_ |
1766047444461682688 |