Phylogeography and Genetic Structure of the Swimming Crabs Portunus sanguinolentus (Herbst, 1783) in East Asia

The three-spot swimming crab (Portunus sanguinolentus) is mainly distributed in South East Asia. An analysis of mitochondrial control region partial sequences allows us to determine the population genetic structure, phylogeography and historical demography of this species in East Asia. The seven pop...

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Bibliographic Details
Published in:Journal of marine science and engineering 2022-02, Vol.10 (2), p.281
Main Authors: Lu, Yu-Ming, Shih, Chun-Han, Chen, Po-Cheng, Kao, Wei-Chieh, Lee, Ying-Chou, Han, Yu-San, Tzeng, Tzong-Der
Format: Article
Language:English
Subjects:
Biology
Climate change
Crustaceans
Demography
Fisheries management
Genetic diversity
Genetic structure
Geography
Haplotypes
historical demographic
Historical structures
Interglacial periods
Low level
Marine crustaceans
Mitochondria
Mitochondrial DNA
Mutation
Nucleotides
Phylogeography
Pleistocene
Population
population expansion
Population genetics
Population growth
population structure
Portunus sanguinolentus
Sea level
Shorelines
Swimming
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Summary:The three-spot swimming crab (Portunus sanguinolentus) is mainly distributed in South East Asia. An analysis of mitochondrial control region partial sequences allows us to determine the population genetic structure, phylogeography and historical demography of this species in East Asia. The seven populations, which included 110 individuals, were collected from mainland China (Shanghai, SH, Xiamen, XM and Hong Kong, HK), Taiwan (Yilan, YL, Taichung, TC, Donggang, DG) and Singapore (Singapore, SGP). The nucleotide diversity (π) of all individuals was 0.01149, with values ranging from 0.00372 (SGP) to 0.01345 (YL). In total, 90 haplotypes have been identified, which can be divided into two major lineages: lineage A consists of specimens from SH, YL, XM, TC and DG, and lineage B corresponds to specimen from SGP. From the second to the most recent interglacial period, population expansion was observed in each lineage. However, a low level of genetic differentiation was also observed in the three-spotted swimming crab, P. sanguinolentus, according to FST values. Our results suggest that several past and present habitat configurations have shaped the genetic patterns of P. sanguinolentus until now. During Pleistocene glaciations, when sea levels were low, this species may have moved along the coast from Southeast Asia to China. It first colonized the Hong Kong area during this era. After sea levels rose and shorelines receded, it subsequently spread to the coast of mainland China.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse10020281