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Phylogeography of Patelloida pygmaea along the China coast

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Abstract

Patelloida pygmaea is one of the most abundantly distributed intertidal marine gastropods along the China coast. The mitochondrial (COI) and internal transcribed spacer 1 (ITS1) DNA of P. pygmaea, one hundred and thirty-seven samples collected from 13 localities along its distribution along the China coast, were used to investigate the phylogeographic patterns of P. pygmaea. Phylogeographic analysis revealed three distinct phylogeographic clades, the South China Sea (SCSC), the Bohai and Yellow Sea (BYSC), and the East China Sea (ECSC) clades. The results of AMOVA showed significant genetic differentiation (P < 0.001) among the three clades. The vicariance of the three lineages was created by the glacial drop in sea level, the Changjiang Estuary, and the sea surface temperature gradient. Based on the ITS1 gene, the BYSC clade was split into two subclades, the north and south clades. We speculate that the Shandong Peninsula was another possible barrier limiting gene flow in the BYSC. Ocean currents played more roles in influencing gene flow within the three clades. The mismatch analysis confirmed the demographic population expansion (P > 0.05). Phylogeographic patterns of P. pygmaea have been primarily affected by Pleistocene climatic oscillations and environmental conditions. During the glacial periods, the sea regressed and moist and warm conditions, characterizing glacial refugia, became prevalent in the region and caused isolated P. pygmaea populations to expand.

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Abbreviations

BI:

Bayesian inference

BYSC:

Bohai and Yellow Sea clade

COI:

first subunit of cytochrome c oxidase

ECS:

East China Sea

ECSC:

Eastern China Sea clade

Fst:

fixation index

IBD:

isolation by distance

ITS1:

internal transcribed spacer region 1

MCMC:

Monte Carlo Markov chains

ML:

maximum likelihood

NBYS:

north clade

PCR:

polymerase chain reaction

PP:

posterior probabilities

PSRF:

potential scale reduction factor

SCS:

South China Sea

SCSC:

South China Sea clade

SSD:

sum of squared deviation

RI:

raggedness index

TL:

tree length

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Acknowledgments

We thank the Administration of Ocean and Fisheries and Professor Zhenxiang Dai for assistance with the collecting work. We are also grateful to two anonymous reviewers for their comments and suggestions to improve this manuscript. We also thank the National Natural Science Foundation of China (No. 31460562) and the Project of Yantai Double Hundred Talent and the Doctoral Science Research Foundation of Yantai University (SM15B01, SM19B70).

Funding

National Natural Science Foundation of China (31460562) and the Project of Yantai Double Hundred Talent and Doctoral Science Research Foundation of Yantai University (SM15B01 and SM19B70).

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Authors and Affiliations

Authors

Contributions

J.Q., Y.C., and X.W. collected the samples. B.S., J.Q., and X.W. wrote the manuscript. Y.X., B.S., R.L., X.S., X.G., and S.W. performed the molecular analysis. All authors read and approved the manuscript.

Corresponding authors

Correspondence to Jiangyong Qu or Xumin Wang.

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Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

No animal testing was performed during this study.

Sampling and field studies

All necessary permits for sampling were obtained by the authors from relevant authorities and are mentioned in the acknowledgements when applicable.

Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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Editorial Responsibility: K. Kocot

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Qu, J., Shi, B., Xu, Y. et al. Phylogeography of Patelloida pygmaea along the China coast. Mar. Biodivers. 51, 38 (2021). https://doi.org/10.1007/s12526-021-01164-1

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  • DOI: https://doi.org/10.1007/s12526-021-01164-1

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