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DOI	10.1007/s10531-024-02791-3
	Are threatened seabird colonies of the pacific ocean genetically vulnerable? The case of the red-tailed tropicbird, Phaethon rubricauda, as a model species
	Varela, Andrea, I; Brokordt, Katherina; Vianna, Juliana A.; Frugone, Maria Jose; Ismar-Rebitz, Stefanie M. H.; Gaskin, Chris P.; Carlile, Nicholas; O'Dwyer, Terence; Adams, Josh; Vanderwerf, Eric A.; Luna-Jorquera, Guillermo
发表日期	2024
ISSN	0960-3115
EISSN	1572-9710
起始页码	33
结束页码	3
卷号	33 期号:3
英文摘要	Oceanic seabirds have suffered population declines and extirpations due to human disturbance and still face multiple threats. Here, we assessed the potential genetic vulnerability of the red-tailed tropicbird, Phaethon rubricauda, a seabird species threatened by human disturbance and listed as 'least concern' by the IUCN. Using Single Nucleotide Polymorphisms (SNPs) we evaluated the genetic population structure of the red-tailed tropicbird throughout the Pacific Ocean using samples from 132 individuals from six islands. We sampled individuals from islands without human-related disturbance (non-impacted islands) and with human-related disturbance (impacted islands). Results of genome-wide SNP analyses were consistent with previous results using mitochondrial DNA sequences analyses. Genetic diversity did not differ between impacted and non-impacted islands, and low inbreeding estimates were detected for all colonies. The SNPs analyses confirmed a pattern of isolation by distance and significant inter-regional (Chile, Australasia, and Hawai'i) genetic structure, but revealed greater differentiation of tropicbirds in Hawai'i compared with Chile and Australasia. Within regions, our results further indicated significant differentiation between Rapa Nui and Salas & G & oacute;mez Island (Chile), and between Meyer and Phillip islands (Australasia) that was not detected using mitochondrial DNA analyses. Within Hawai'i, we found a lack of significant genetic differentiation between O'ahu and Kaua'i, separated by 200 km. Our findings indicated that red-tailed tropicbird colonies are at genetic risk due to limited dispersal among colonies which may reduce the fitness of the species in the long-term. We suggest that red-tailed tropicbird colonies are vulnerable to future population declines because recovery through immigration from other islands may be limited by geographic distance. Conservation actions will help preserve genetic diversity and discrete populations for this native seabird at colonies throughout the Pacific.
英文关键词	Oceanic islands; Human disturbance; Introduced predators; Genetic diversity; Population divergence; SNPs
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001164954100001
来源期刊	BIODIVERSITY AND CONSERVATION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302671
作者单位	Universidad de Concepcion; Universidad Catolica del Norte; Universidad Catolica del Norte; Universidad Catolica del Norte; Pontificia Universidad Catolica de Chile; Universidad San Sebastian; University of Auckland; United States Department of the Interior; United States Geological Survey
推荐引用方式 GB/T 7714	Varela, Andrea, I,Brokordt, Katherina,Vianna, Juliana A.,et al. Are threatened seabird colonies of the pacific ocean genetically vulnerable? The case of the red-tailed tropicbird, Phaethon rubricauda, as a model species[J],2024,33(3).
APA	Varela, Andrea, I.,Brokordt, Katherina.,Vianna, Juliana A..,Frugone, Maria Jose.,Ismar-Rebitz, Stefanie M. H..,...&Luna-Jorquera, Guillermo.(2024).Are threatened seabird colonies of the pacific ocean genetically vulnerable? The case of the red-tailed tropicbird, Phaethon rubricauda, as a model species.BIODIVERSITY AND CONSERVATION,33(3).
MLA	Varela, Andrea, I,et al."Are threatened seabird colonies of the pacific ocean genetically vulnerable? The case of the red-tailed tropicbird, Phaethon rubricauda, as a model species".BIODIVERSITY AND CONSERVATION 33.3(2024).