Spatial genetic structuring and demographic history of the little spinefoot Siganus spinus in the Western Pacific

資料種別:
論文(リポジトリ)
責任表示:
Iwamoto, Kensuke ; Chang, Chin-Wei ; Imai, Hideyuki
言語:
英語
出版情報:
Biogeographical Society of Japan — 日本生物地理学会, 2020-09-20
著者名:
掲載情報:
Biogeography : international journal of biogeography, phylogeny, taxonomy, ecology, biodiversity, evolution, and conservation biology
ISSN:
1345-0662  CiNii Articles  Webcat Plus  JAIRO
巻:
22
開始ページ:
26
終了ページ:
34
バージョン:
publisher
概要:
Studies have suggested that fishes with broad distribution ranges, long pelagic duration, and great mobility in their early life histories may have an advantage in their ability to return to their natal reef habitats. Siganus spinus is a siganid fish with a broad dispersal strategy, which may also exploit its great mobility to enhance self-recruitment. Variations in mitochondrial DNA sequences were analysed to estimate the genetic structure and demographic history of Siganus spinus in the West Pacific. In total, 446 nucleotide sequences, including the tRNAThr gene, the tRNAPro gene, and the first half of the control region, were analysed from 240 individuals sampled at five sites spanning the West Pacific Ocean; 37 haplotypes were identified. Our results showed significant geographic genetic structure as well as isolation by distance. Both neutrality tests and mismatch distribution indicated that the population expansion of S. spinus through the study area may have occurred in the late Quaternary. A dispersal strategy characterised by large juveniles and open-sea distribution may have contributed to a sudden population expansion after the last glacial period, along with an expansion of distribution. 続きを見る
URL:
http://hdl.handle.net/20.500.12000/46909
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