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
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...
Published in: | Aquatic Conservation: Marine and Freshwater Ecosystems |
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Language: | English |
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Wiley
2021
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Online Access: | https://oceanrep.geomar.de/id/eprint/50584/ https://oceanrep.geomar.de/id/eprint/50584/1/aqc.3471.pdf https://doi.org/10.1002/aqc.3471 |
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ftoceanrep:oai:oceanrep.geomar.de:50584 2024-02-11T10:02:56+01:00 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, Stefanie M. H. Gaskin, Chris P. Carlile, Nicholas O'Dwyer, Terence Adams, Josh VanderWerf, Eric A. Luna‐Jorquera, Guillermo 2021-02 text https://oceanrep.geomar.de/id/eprint/50584/ https://oceanrep.geomar.de/id/eprint/50584/1/aqc.3471.pdf https://doi.org/10.1002/aqc.3471 en eng Wiley https://oceanrep.geomar.de/id/eprint/50584/1/aqc.3471.pdf Varela, A. I. , Brokordt, K., Ismar, S. M. H., Gaskin, C. P., Carlile, N., O'Dwyer, T., Adams, J., VanderWerf, E. A. and Luna‐Jorquera, G. (2021) 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 . Aquatic Conservation: Marine and Freshwater Ecosystems , 31 (2). pp. 367-377. DOI 10.1002/aqc.3471 <https://doi.org/10.1002/aqc.3471>. doi:10.1002/aqc.3471 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2021 ftoceanrep https://doi.org/10.1002/aqc.3471 2024-01-15T00:22:42Z 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 ΦST 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 resolve the ... Article in Journal/Newspaper Close Islands OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Close Islands ENVELOPE(144.550,144.550,-67.017,-67.017) Pacific Aquatic Conservation: Marine and Freshwater Ecosystems 31 2 367 377 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
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 ΦST 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 resolve the ... |
format |
Article in Journal/Newspaper |
author |
Varela, Andrea I. Brokordt, Katherina Ismar, 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, 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, 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 |
2021 |
url |
https://oceanrep.geomar.de/id/eprint/50584/ https://oceanrep.geomar.de/id/eprint/50584/1/aqc.3471.pdf https://doi.org/10.1002/aqc.3471 |
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ENVELOPE(144.550,144.550,-67.017,-67.017) |
geographic |
Close Islands Pacific |
geographic_facet |
Close Islands Pacific |
genre |
Close Islands |
genre_facet |
Close Islands |
op_relation |
https://oceanrep.geomar.de/id/eprint/50584/1/aqc.3471.pdf Varela, A. I. , Brokordt, K., Ismar, S. M. H., Gaskin, C. P., Carlile, N., O'Dwyer, T., Adams, J., VanderWerf, E. A. and Luna‐Jorquera, G. (2021) 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 . Aquatic Conservation: Marine and Freshwater Ecosystems , 31 (2). pp. 367-377. DOI 10.1002/aqc.3471 <https://doi.org/10.1002/aqc.3471>. doi:10.1002/aqc.3471 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
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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1790599040377815040 |