Genetic isolation by distance in the yellowfin goby populations revealed by RAD sequencing

Population genetic studies of marine species sometimes find no clear patterns of genetic differentiation, but signals of geographic gene flow typified by isolation by distance (IBD) due to high dispersal ability. A previous study of mitochondrial DNA of the yellowfin goby Acanthogobius flavimanus in...

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Bibliographic Details
Published in:Ichthyological research 2020-01, Vol.67 (1), p.98-104
Main Authors: Hirase, Shotaro, Tezuka, Ayumi, Nagano, Atsushi J., Kikuchi, Kiyoshi, Iwasaki, Wataru
Format: Article
Language:English
Subjects:
Acanthogobius flavimanus
Animal Systematics/Taxonomy/Biogeography
Archipelagoes
Biomedical and Life Sciences
Coastal environments
Coastal zones
Dispersal
Distance
DNA
Ecology
Freshwater & Marine Ecology
Gene flow
Genetic isolation
Larvae
Life Sciences
Marine fishes
Mitochondrial DNA
Population genetics
Population studies
Sequence analysis
Sequencing
Sexual isolation
Single-nucleotide polymorphism
Species
Zoology
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Summary:Population genetic studies of marine species sometimes find no clear patterns of genetic differentiation, but signals of geographic gene flow typified by isolation by distance (IBD) due to high dispersal ability. A previous study of mitochondrial DNA of the yellowfin goby Acanthogobius flavimanus indicated that this species also does not have clearly differentiated population groups around the Japanese archipelago, in contrast with other coastal goby species that have highly differentiated groups between the Sea of Japan and Pacific Ocean populations. Here, to clearly reveal phylogeographic structures of the yellowfin goby around the Japanese archipelago, we conducted large-scale RAD-sequencing analysis of their nuclear genomic SNP loci. As a result, IBD patterns were confirmed across the yellowfin goby populations, and the larval dispersal distance of this species was revealed to be approximately 19 km on average. In addition, different larval dispersal distances were estimated for its Sea of Japan and Pacific Ocean populations, suggesting that different coastal environments and/or ecological features may affect its dispersal rates. These results would provide foundations for ecological and conservation studies of the yellowfin goby and coastal fishes having similar dispersal strategy to this species.
ISSN:1341-8998
1616-3915
DOI:10.1007/s10228-019-00709-6