Genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the Pacific Ocean: The red‐tailed tropicbird, Phaethon rubricauda
Abstract Many seabird breeding colonies have recovered from heavy anthropogenic disturbance after conservation actions. The widely distributed red‐tailed tropicbird, Phaethon rubricauda , was used as a model species to assess potential anthropogenic impacts on the genetic diversity of breeding colon...
Published in: | Aquatic Conservation: Marine and Freshwater Ecosystems |
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Online Access: | http://dx.doi.org/10.1002/aqc.3471 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.3471 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/aqc.3471 |
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crwiley:10.1002/aqc.3471 2024-09-15T18:02:39+00:00 Genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the Pacific Ocean: The red‐tailed tropicbird, Phaethon rubricauda Varela, Andrea I. Brokordt, Katherina Ismar‐Rebitz, Stefanie M.H. Gaskin, Chris P. Carlile, Nicholas O'Dwyer, Terence Adams, Josh VanderWerf, Eric A. Luna‐Jorquera, Guillermo Fondo Nacional de Desarrollo Científico y Tecnológico 2020 http://dx.doi.org/10.1002/aqc.3471 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.3471 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/aqc.3471 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Aquatic Conservation: Marine and Freshwater Ecosystems volume 31, issue 2, page 367-377 ISSN 1052-7613 1099-0755 journal-article 2020 crwiley https://doi.org/10.1002/aqc.3471 2024-07-09T04:12:27Z Abstract Many seabird breeding colonies have recovered from heavy anthropogenic disturbance after conservation actions. The widely distributed red‐tailed tropicbird, Phaethon rubricauda , was used as a model species to assess potential anthropogenic impacts on the genetic diversity of breeding colonies in the Pacific Ocean. Cytochrome c oxidase subunit I and control region sequences analyses were conducted across the range of the species in the Pacific Ocean. The study sites were at islands without human‐related disturbance (non‐impacted islands) and with human‐related disturbance (impacted islands). We hypothesized that (i) breeding colonies of the red‐tailed tropicbird on impacted islands have lower genetic diversity compared with colonies on non‐impacted islands, and (ii) breeding colonies of the red‐tailed tropicbird show significant fine and broad‐scale genetic structure across the Pacific Ocean. Bayesian skyline analyses were conducted to infer past changes in population sizes. Genetic diversity was similar between impacted and non‐impacted islands. There was significant broad‐scale genetic structure among colonies separated by over 6,000 km, but a lack of significant fine‐scale genetic structure within Australasia and Hawai'i, although a significant level of differentiation was found within Chile with Φ ST analyses. Skyline analyses showed that effective population sizes remained relatively constant through time, but experienced either a slight decrease or the end of an expansion event through the last 1,000 years. These changes may be related to the arrival of humans on Pacific islands. Impacted islands may have received immigrants from other relatively close islands, buffering the loss of genetic diversity. However, it is also possible that colonies have retained ancestral variation or that a large effective population size coupled with a long generation time (13 years) has prevented the loss of genetic diversity in human‐impacted islands. Future research using higher‐resolution markers is needed to ... Article in Journal/Newspaper Close Islands Wiley Online Library Aquatic Conservation: Marine and Freshwater Ecosystems 31 2 367 377 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Many seabird breeding colonies have recovered from heavy anthropogenic disturbance after conservation actions. The widely distributed red‐tailed tropicbird, Phaethon rubricauda , was used as a model species to assess potential anthropogenic impacts on the genetic diversity of breeding colonies in the Pacific Ocean. Cytochrome c oxidase subunit I and control region sequences analyses were conducted across the range of the species in the Pacific Ocean. The study sites were at islands without human‐related disturbance (non‐impacted islands) and with human‐related disturbance (impacted islands). We hypothesized that (i) breeding colonies of the red‐tailed tropicbird on impacted islands have lower genetic diversity compared with colonies on non‐impacted islands, and (ii) breeding colonies of the red‐tailed tropicbird show significant fine and broad‐scale genetic structure across the Pacific Ocean. Bayesian skyline analyses were conducted to infer past changes in population sizes. Genetic diversity was similar between impacted and non‐impacted islands. There was significant broad‐scale genetic structure among colonies separated by over 6,000 km, but a lack of significant fine‐scale genetic structure within Australasia and Hawai'i, although a significant level of differentiation was found within Chile with Φ ST analyses. Skyline analyses showed that effective population sizes remained relatively constant through time, but experienced either a slight decrease or the end of an expansion event through the last 1,000 years. These changes may be related to the arrival of humans on Pacific islands. Impacted islands may have received immigrants from other relatively close islands, buffering the loss of genetic diversity. However, it is also possible that colonies have retained ancestral variation or that a large effective population size coupled with a long generation time (13 years) has prevented the loss of genetic diversity in human‐impacted islands. Future research using higher‐resolution markers is needed to ... |
author2 |
Fondo Nacional de Desarrollo Científico y Tecnológico |
format |
Article in Journal/Newspaper |
author |
Varela, Andrea I. Brokordt, Katherina Ismar‐Rebitz, Stefanie M.H. Gaskin, Chris P. Carlile, Nicholas O'Dwyer, Terence Adams, Josh VanderWerf, Eric A. Luna‐Jorquera, Guillermo |
spellingShingle |
Varela, Andrea I. Brokordt, Katherina Ismar‐Rebitz, Stefanie M.H. Gaskin, Chris P. Carlile, Nicholas O'Dwyer, Terence Adams, Josh VanderWerf, Eric A. Luna‐Jorquera, Guillermo Genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the Pacific Ocean: The red‐tailed tropicbird, Phaethon rubricauda |
author_facet |
Varela, Andrea I. Brokordt, Katherina Ismar‐Rebitz, Stefanie M.H. Gaskin, Chris P. Carlile, Nicholas O'Dwyer, Terence Adams, Josh VanderWerf, Eric A. Luna‐Jorquera, Guillermo |
author_sort |
Varela, Andrea I. |
title |
Genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the Pacific Ocean: The red‐tailed tropicbird, Phaethon rubricauda |
title_short |
Genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the Pacific Ocean: The red‐tailed tropicbird, Phaethon rubricauda |
title_full |
Genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the Pacific Ocean: The red‐tailed tropicbird, Phaethon rubricauda |
title_fullStr |
Genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the Pacific Ocean: The red‐tailed tropicbird, Phaethon rubricauda |
title_full_unstemmed |
Genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the Pacific Ocean: The red‐tailed tropicbird, Phaethon rubricauda |
title_sort |
genetic diversity, population structure, and historical demography of a highly vagile and human‐impacted seabird in the pacific ocean: the red‐tailed tropicbird, phaethon rubricauda |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1002/aqc.3471 https://onlinelibrary.wiley.com/doi/pdf/10.1002/aqc.3471 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/aqc.3471 |
genre |
Close Islands |
genre_facet |
Close Islands |
op_source |
Aquatic Conservation: Marine and Freshwater Ecosystems volume 31, issue 2, page 367-377 ISSN 1052-7613 1099-0755 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/aqc.3471 |
container_title |
Aquatic Conservation: Marine and Freshwater Ecosystems |
container_volume |
31 |
container_issue |
2 |
container_start_page |
367 |
op_container_end_page |
377 |
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1810440080772300800 |