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Phylogeography study of Ammodytes personatus in Northwestern Pacific: Pleistocene isolation, temperature and current conducted secondary contact.

Han Z, Yanagimoto T, Zhang Y, Gao T - PLoS ONE (2012)

Bottom Line: However, significant genetic structure is also detected in the Sea of Japan, contracting expected homogenization hypothesis in Tsushima Current.The haplotype frequency of lineages in both sides of Japanese Island and significant genetic structure between north and south groups revealed that the distribution of lineage B and north group were highly limited by the annual sea temperature.Lack of genetic structure in the south group and north group populations indicated that ocean currents within groups facilitated the dispersal of A. personatus.

View Article: PubMed Central - PubMed

Affiliation: Fishery College, Zhejiang Ocean University, Zhoushan, Zhejiang, China.

ABSTRACT
To assess the role of historical process and contemporary factors in shaping population structures in Northwestern Pacific, mitochondrial control region sequences were analyzed to characterize the phylogeography and population structure of the Japanese sand lance Ammodytes personatus. A total of 429 individuals sampled from 17 populations through the species' range are sequenced. Two distinct lineages are detected, which might have been divergent in the Sea of Japan and Pacific costal waters of Japanese Island, during the low sea level. Significant genetic structure is revealed between the Kuroshio and Oyashio Currents. However, significant genetic structure is also detected in the Sea of Japan, contracting expected homogenization hypothesis in Tsushima Current. The haplotype frequency of lineages in both sides of Japanese Island and significant genetic structure between north and south groups revealed that the distribution of lineage B and north group were highly limited by the annual sea temperature. The lack of lineage B in Qingdao population with low sea temperature reflects the sea temperature barrier. Lack of genetic structure in the south group and north group populations indicated that ocean currents within groups facilitated the dispersal of A. personatus.

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The observed pairwise differences (bars), and the expected mismatch distributions under the sudden expansion model (solid line) for two lineages.
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pone-0037425-g005: The observed pairwise differences (bars), and the expected mismatch distributions under the sudden expansion model (solid line) for two lineages.

Mentions: The mismatch distributions for lineage A and lineage B were unimodal, supporting a model of sudden expansion (Fig 5). The PSSD and raggedness tests could not reject the expansion hypothesis. For lineage A, it was estimated that population expansion occurred approximately at 129,000 years ago, while for the lineage B this time was 275,000 years ago. The Fu's and Tajima's D tests for lineage A and B were negative and significant (Table 1), which indicated population expansion. These were consistent with the star shape networks.


Phylogeography study of Ammodytes personatus in Northwestern Pacific: Pleistocene isolation, temperature and current conducted secondary contact.

Han Z, Yanagimoto T, Zhang Y, Gao T - PLoS ONE (2012)

The observed pairwise differences (bars), and the expected mismatch distributions under the sudden expansion model (solid line) for two lineages.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3368699&req=5

pone-0037425-g005: The observed pairwise differences (bars), and the expected mismatch distributions under the sudden expansion model (solid line) for two lineages.
Mentions: The mismatch distributions for lineage A and lineage B were unimodal, supporting a model of sudden expansion (Fig 5). The PSSD and raggedness tests could not reject the expansion hypothesis. For lineage A, it was estimated that population expansion occurred approximately at 129,000 years ago, while for the lineage B this time was 275,000 years ago. The Fu's and Tajima's D tests for lineage A and B were negative and significant (Table 1), which indicated population expansion. These were consistent with the star shape networks.

Bottom Line: However, significant genetic structure is also detected in the Sea of Japan, contracting expected homogenization hypothesis in Tsushima Current.The haplotype frequency of lineages in both sides of Japanese Island and significant genetic structure between north and south groups revealed that the distribution of lineage B and north group were highly limited by the annual sea temperature.Lack of genetic structure in the south group and north group populations indicated that ocean currents within groups facilitated the dispersal of A. personatus.

View Article: PubMed Central - PubMed

Affiliation: Fishery College, Zhejiang Ocean University, Zhoushan, Zhejiang, China.

ABSTRACT
To assess the role of historical process and contemporary factors in shaping population structures in Northwestern Pacific, mitochondrial control region sequences were analyzed to characterize the phylogeography and population structure of the Japanese sand lance Ammodytes personatus. A total of 429 individuals sampled from 17 populations through the species' range are sequenced. Two distinct lineages are detected, which might have been divergent in the Sea of Japan and Pacific costal waters of Japanese Island, during the low sea level. Significant genetic structure is revealed between the Kuroshio and Oyashio Currents. However, significant genetic structure is also detected in the Sea of Japan, contracting expected homogenization hypothesis in Tsushima Current. The haplotype frequency of lineages in both sides of Japanese Island and significant genetic structure between north and south groups revealed that the distribution of lineage B and north group were highly limited by the annual sea temperature. The lack of lineage B in Qingdao population with low sea temperature reflects the sea temperature barrier. Lack of genetic structure in the south group and north group populations indicated that ocean currents within groups facilitated the dispersal of A. personatus.

Show MeSH