Genetic diversity in clustered colonies of an Antarctic marine mesopredator: a role for habitat quality?
Genetic structure may be highly variable across seabird species, and particularly among those that are distributed over large geographical areas. The Adélie penguin (Pygoscelis adeliae) is a numerically dominant Antarctic seabird that is considered to be a key species in coastal ecosystems. Since t...
Published in: | Antarctic Science |
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2021
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Online Access: | http://hdl.handle.net/11365/1137928 https://doi.org/10.1017/S0954102021000067 https://www.cambridge.org/core/journals/antarctic-science/article/genetic-diversity-in-clustered-colonies-of-an-antarctic-marine-mesopredator-a-role-for-habitat-quality/D5004B8F68140C95569E0614594A4B08 |
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ftunivsiena:oai:usiena-air.unisi.it:11365/1137928 2024-04-28T07:56:43+00:00 Genetic diversity in clustered colonies of an Antarctic marine mesopredator: a role for habitat quality? Emiliano Mori Claudia Brunetti Antonio Carapelli Lucia Burrini Niccolò Fattorini Francesco Ferretti Silvia Olmastroni Mori, Emiliano Brunetti, Claudia Carapelli, Antonio Burrini, Lucia Fattorini, Niccolo' Ferretti, Francesco Olmastroni, Silvia 2021 ELETTRONICO http://hdl.handle.net/11365/1137928 https://doi.org/10.1017/S0954102021000067 https://www.cambridge.org/core/journals/antarctic-science/article/genetic-diversity-in-clustered-colonies-of-an-antarctic-marine-mesopredator-a-role-for-habitat-quality/D5004B8F68140C95569E0614594A4B08 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000668615200002 firstpage:1 lastpage:10 numberofpages:10 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11365/1137928 doi:10.1017/S0954102021000067 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85103616817 https://www.cambridge.org/core/journals/antarctic-science/article/genetic-diversity-in-clustered-colonies-of-an-antarctic-marine-mesopredator-a-role-for-habitat-quality/D5004B8F68140C95569E0614594A4B08 info:eu-repo/semantics/openAccess Adélie penguin gene flow microsatellite philopatry population clusters Ross Sea info:eu-repo/semantics/article 2021 ftunivsiena https://doi.org/10.1017/S0954102021000067 2024-04-04T16:54:34Z Genetic structure may be highly variable across seabird species, and particularly among those that are distributed over large geographical areas. The Adélie penguin (Pygoscelis adeliae) is a numerically dominant Antarctic seabird that is considered to be a key species in coastal ecosystems. Since the Last Glacial Maximum, penguin colonization of the Antarctic coastline occurred at varying geographical and temporal scales, contributing to an incomplete understanding of how modern colonies relate to each other at local or regional scales. We assessed the population genetic structure of Adélie penguins (n = 86 individuals) from three adjacent colonies along the Victoria Land coast using molecular genetic markers (i.e. seven microsatellite loci isolated through next-generation sequencing). Our results indicate meta-population dynamics and possibly relationships with habitat quality. A generally low genetic diversity (Nei's index: 0.322–0.667) was observed within each colony, in contrast to significant genetic heterogeneity among colonies (pairwise FST = 0.071–0.148), indicating that populations were genetically structured. Accordingly, an assignment test correctly placed individuals within the respective colonies from which they were sampled. The presence of inter-colony genetic differentiation contrasts with previous studies on this species that showed a lack of genetic structure, possibly due to higher juvenile or adult dispersal. Our sampled colonies were not panmictic and suggest a lower migration rate, which may reflect relatively stable environmental conditions in the Ross Sea compared to other regions of Antarctica, where the ocean climate is warming. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Pygoscelis adeliae Ross Sea Victoria Land Università degli Studi di Siena: USiena air Antarctic Science 1 10 |
institution |
Open Polar |
collection |
Università degli Studi di Siena: USiena air |
op_collection_id |
ftunivsiena |
language |
English |
topic |
Adélie penguin gene flow microsatellite philopatry population clusters Ross Sea |
spellingShingle |
Adélie penguin gene flow microsatellite philopatry population clusters Ross Sea Emiliano Mori Claudia Brunetti Antonio Carapelli Lucia Burrini Niccolò Fattorini Francesco Ferretti Silvia Olmastroni Genetic diversity in clustered colonies of an Antarctic marine mesopredator: a role for habitat quality? |
topic_facet |
Adélie penguin gene flow microsatellite philopatry population clusters Ross Sea |
description |
Genetic structure may be highly variable across seabird species, and particularly among those that are distributed over large geographical areas. The Adélie penguin (Pygoscelis adeliae) is a numerically dominant Antarctic seabird that is considered to be a key species in coastal ecosystems. Since the Last Glacial Maximum, penguin colonization of the Antarctic coastline occurred at varying geographical and temporal scales, contributing to an incomplete understanding of how modern colonies relate to each other at local or regional scales. We assessed the population genetic structure of Adélie penguins (n = 86 individuals) from three adjacent colonies along the Victoria Land coast using molecular genetic markers (i.e. seven microsatellite loci isolated through next-generation sequencing). Our results indicate meta-population dynamics and possibly relationships with habitat quality. A generally low genetic diversity (Nei's index: 0.322–0.667) was observed within each colony, in contrast to significant genetic heterogeneity among colonies (pairwise FST = 0.071–0.148), indicating that populations were genetically structured. Accordingly, an assignment test correctly placed individuals within the respective colonies from which they were sampled. The presence of inter-colony genetic differentiation contrasts with previous studies on this species that showed a lack of genetic structure, possibly due to higher juvenile or adult dispersal. Our sampled colonies were not panmictic and suggest a lower migration rate, which may reflect relatively stable environmental conditions in the Ross Sea compared to other regions of Antarctica, where the ocean climate is warming. |
author2 |
Mori, Emiliano Brunetti, Claudia Carapelli, Antonio Burrini, Lucia Fattorini, Niccolo' Ferretti, Francesco Olmastroni, Silvia |
format |
Article in Journal/Newspaper |
author |
Emiliano Mori Claudia Brunetti Antonio Carapelli Lucia Burrini Niccolò Fattorini Francesco Ferretti Silvia Olmastroni |
author_facet |
Emiliano Mori Claudia Brunetti Antonio Carapelli Lucia Burrini Niccolò Fattorini Francesco Ferretti Silvia Olmastroni |
author_sort |
Emiliano Mori |
title |
Genetic diversity in clustered colonies of an Antarctic marine mesopredator: a role for habitat quality? |
title_short |
Genetic diversity in clustered colonies of an Antarctic marine mesopredator: a role for habitat quality? |
title_full |
Genetic diversity in clustered colonies of an Antarctic marine mesopredator: a role for habitat quality? |
title_fullStr |
Genetic diversity in clustered colonies of an Antarctic marine mesopredator: a role for habitat quality? |
title_full_unstemmed |
Genetic diversity in clustered colonies of an Antarctic marine mesopredator: a role for habitat quality? |
title_sort |
genetic diversity in clustered colonies of an antarctic marine mesopredator: a role for habitat quality? |
publishDate |
2021 |
url |
http://hdl.handle.net/11365/1137928 https://doi.org/10.1017/S0954102021000067 https://www.cambridge.org/core/journals/antarctic-science/article/genetic-diversity-in-clustered-colonies-of-an-antarctic-marine-mesopredator-a-role-for-habitat-quality/D5004B8F68140C95569E0614594A4B08 |
genre |
Antarc* Antarctic Antarctic Science Antarctica Pygoscelis adeliae Ross Sea Victoria Land |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Pygoscelis adeliae Ross Sea Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000668615200002 firstpage:1 lastpage:10 numberofpages:10 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11365/1137928 doi:10.1017/S0954102021000067 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85103616817 https://www.cambridge.org/core/journals/antarctic-science/article/genetic-diversity-in-clustered-colonies-of-an-antarctic-marine-mesopredator-a-role-for-habitat-quality/D5004B8F68140C95569E0614594A4B08 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/S0954102021000067 |
container_title |
Antarctic Science |
container_start_page |
1 |
op_container_end_page |
10 |
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1797584617999433728 |