Spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds
How genetic diversity ismaintained in philopatric colonial systems remains unclear, and understanding the dynamic balance of philopatry and dispersal at all spatial scales is essential to the study of the evolution of coloniality. In the King penguin, Aptenodytes patagonicus, return rates of post-fl...
Published in: | PLOS ONE |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/11392/2382820 https://doi.org/10.1371/journal.pone.0117981 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0117981&representation=PDF |
id |
ftunivferrarair:oai:sfera.unife.it:11392/2382820 |
---|---|
record_format |
openpolar |
spelling |
ftunivferrarair:oai:sfera.unife.it:11392/2382820 2024-09-09T19:50:14+00:00 Spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds Cristofari, Robin Trucchi, Emiliano Whittington, Jason D. Vigetta, Stéphanie Gachot-Neveu, Hélène Stenseth, Nils Christian Le Maho, Yvon Le Bohec, Céline Cristofari, Robin Trucchi, Emiliano Whittington, Jason D. Vigetta, Stéphanie Gachot-Neveu, Hélène Stenseth, Nils Christian Le Maho, Yvon Le Bohec, Céline 2015 ELETTRONICO http://hdl.handle.net/11392/2382820 https://doi.org/10.1371/journal.pone.0117981 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0117981&representation=PDF eng eng info:eu-repo/semantics/altIdentifier/pmid/25680103 info:eu-repo/semantics/altIdentifier/wos/WOS:000350682600096 volume:10 issue:2 firstpage:e0117981 lastpage:e0117981 journal:PLOS ONE http://hdl.handle.net/11392/2382820 doi:10.1371/journal.pone.0117981 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84922986946 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0117981&representation=PDF Animal Breeding Cluster Analysi Ecosystem Microsatellite Repeat Spatial Analysi Spheniscidae Genetic Variation Genetics Population Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) info:eu-repo/semantics/article 2015 ftunivferrarair https://doi.org/10.1371/journal.pone.0117981 2024-06-19T13:40:33Z How genetic diversity ismaintained in philopatric colonial systems remains unclear, and understanding the dynamic balance of philopatry and dispersal at all spatial scales is essential to the study of the evolution of coloniality. In the King penguin, Aptenodytes patagonicus, return rates of post-fledging chicks to their natal sub-colony are remarkably high. Empirical studies have shown that adults return year after year to their previous breeding territories within a radius of a fewmeters. Yet, little reliable data are available on intra- and inter-colonial dispersal in this species. Here, we present the first fine-scale study of the genetic structure in a king penguin colony in the Crozet Archipelago. Samples were collected from individual chicks and analysed at 8 microsatellite loci. Precise geolocation data of hatching sites and selective pressures associated with habitat features were recorded for all sampling locations. We found that despite strong natal and breeding site fidelity, king penguins retain a high degree of panmixia and genetic diversity. Yet, genetic structure appears markedly heterogeneous across the colony, with higher-than-expected inbreeding levels, and local inbreeding and relatedness hotspots that overlap predicted higher-quality nesting locations. This points towards heterogeneous population structure at the sub-colony level, in which fine-scale environmental features drive local philopatric behaviour, while lower-quality patches may act as genetic mixing mechanisms at the colony level. These findings show how a lack of global genetic structuring can emerge from small-scale heterogeneity in ecological parameters, as opposed to the classical model of homogeneous dispersal. Our results also emphasize the importance of sampling design for estimation of population parameters in colonial seabirds, as at high spatial resolution, basic genetic features are shown to be location-dependent. Finally, this study stresses the importance of understanding intra-colonial dispersal and genetic mixing ... Article in Journal/Newspaper King Penguins Università degli Studi di Ferrara: CINECA IRIS PLOS ONE 10 2 e0117981 |
institution |
Open Polar |
collection |
Università degli Studi di Ferrara: CINECA IRIS |
op_collection_id |
ftunivferrarair |
language |
English |
topic |
Animal Breeding Cluster Analysi Ecosystem Microsatellite Repeat Spatial Analysi Spheniscidae Genetic Variation Genetics Population Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) |
spellingShingle |
Animal Breeding Cluster Analysi Ecosystem Microsatellite Repeat Spatial Analysi Spheniscidae Genetic Variation Genetics Population Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) Cristofari, Robin Trucchi, Emiliano Whittington, Jason D. Vigetta, Stéphanie Gachot-Neveu, Hélène Stenseth, Nils Christian Le Maho, Yvon Le Bohec, Céline Spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds |
topic_facet |
Animal Breeding Cluster Analysi Ecosystem Microsatellite Repeat Spatial Analysi Spheniscidae Genetic Variation Genetics Population Medicine (all) Biochemistry Genetics and Molecular Biology (all) Agricultural and Biological Sciences (all) |
description |
How genetic diversity ismaintained in philopatric colonial systems remains unclear, and understanding the dynamic balance of philopatry and dispersal at all spatial scales is essential to the study of the evolution of coloniality. In the King penguin, Aptenodytes patagonicus, return rates of post-fledging chicks to their natal sub-colony are remarkably high. Empirical studies have shown that adults return year after year to their previous breeding territories within a radius of a fewmeters. Yet, little reliable data are available on intra- and inter-colonial dispersal in this species. Here, we present the first fine-scale study of the genetic structure in a king penguin colony in the Crozet Archipelago. Samples were collected from individual chicks and analysed at 8 microsatellite loci. Precise geolocation data of hatching sites and selective pressures associated with habitat features were recorded for all sampling locations. We found that despite strong natal and breeding site fidelity, king penguins retain a high degree of panmixia and genetic diversity. Yet, genetic structure appears markedly heterogeneous across the colony, with higher-than-expected inbreeding levels, and local inbreeding and relatedness hotspots that overlap predicted higher-quality nesting locations. This points towards heterogeneous population structure at the sub-colony level, in which fine-scale environmental features drive local philopatric behaviour, while lower-quality patches may act as genetic mixing mechanisms at the colony level. These findings show how a lack of global genetic structuring can emerge from small-scale heterogeneity in ecological parameters, as opposed to the classical model of homogeneous dispersal. Our results also emphasize the importance of sampling design for estimation of population parameters in colonial seabirds, as at high spatial resolution, basic genetic features are shown to be location-dependent. Finally, this study stresses the importance of understanding intra-colonial dispersal and genetic mixing ... |
author2 |
Cristofari, Robin Trucchi, Emiliano Whittington, Jason D. Vigetta, Stéphanie Gachot-Neveu, Hélène Stenseth, Nils Christian Le Maho, Yvon Le Bohec, Céline |
format |
Article in Journal/Newspaper |
author |
Cristofari, Robin Trucchi, Emiliano Whittington, Jason D. Vigetta, Stéphanie Gachot-Neveu, Hélène Stenseth, Nils Christian Le Maho, Yvon Le Bohec, Céline |
author_facet |
Cristofari, Robin Trucchi, Emiliano Whittington, Jason D. Vigetta, Stéphanie Gachot-Neveu, Hélène Stenseth, Nils Christian Le Maho, Yvon Le Bohec, Céline |
author_sort |
Cristofari, Robin |
title |
Spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds |
title_short |
Spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds |
title_full |
Spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds |
title_fullStr |
Spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds |
title_full_unstemmed |
Spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds |
title_sort |
spatial heterogeneity as a genetic mixing mechanism in highly philopatric colonial seabirds |
publishDate |
2015 |
url |
http://hdl.handle.net/11392/2382820 https://doi.org/10.1371/journal.pone.0117981 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0117981&representation=PDF |
genre |
King Penguins |
genre_facet |
King Penguins |
op_relation |
info:eu-repo/semantics/altIdentifier/pmid/25680103 info:eu-repo/semantics/altIdentifier/wos/WOS:000350682600096 volume:10 issue:2 firstpage:e0117981 lastpage:e0117981 journal:PLOS ONE http://hdl.handle.net/11392/2382820 doi:10.1371/journal.pone.0117981 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84922986946 http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.pone.0117981&representation=PDF |
op_doi |
https://doi.org/10.1371/journal.pone.0117981 |
container_title |
PLOS ONE |
container_volume |
10 |
container_issue |
2 |
container_start_page |
e0117981 |
_version_ |
1809919573776924672 |