Limits...
Population Structure and Historical Demography of the Oriental River Prawn (Macrobrachium nipponense) in Taiwan.

Chen PC, Shih CH, Chu TJ, Wang D, Lee YC, Tzeng TD - PLoS ONE (2015)

Bottom Line: All FST values among nine populations were significantly different except the one between Jhonggang River Estuary (JGE, west-central Taiwan) and Kaoping River Estuary (KPE, southern Taiwan).The dispersal route of this species might be from China to west-central and west-southern Taiwan, and then the part individuals belonging to lineage A and B dispersed southerly and northerly, respectively.And then part individuals in west-central Taiwan fell back to and stay at estuaries as the sea level rose about 18,000 years ago.

View Article: PubMed Central - PubMed

Affiliation: Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 106, Taiwan.

ABSTRACT
The oriental river prawn (Macrobrachium nipponense) is a non-obligatory amphidromous prawn, and it has a wide distribution covering almost the entire Taiwan. Mitochondrial DNA fragment sequences of the cytochrome oxidase subunit I (COI) and 16S rRNA were combined and used to elucidate the population structure and historical demography of oriental river prawn in Taiwan. A total of 202 individuals from six reservoirs and three estuaries were separately collected. Nucleotide diversity (π) of all populations was 0.01217, with values ranging from 0.00188 (Shihmen Reservoir, SMR, northern Taiwan) to 0.01425 (Mingte Reservoir, MTR, west-central Taiwan). All 76 haplotypes were divided into 2 lineages: lineage A included individuals from all sampling areas except SMR, and lineage B included specimens from all sampling locations except Chengching Lake Reservoir (CLR) and Liyu Lake Reservoir (LLR). All FST values among nine populations were significantly different except the one between Jhonggang River Estuary (JGE, west-central Taiwan) and Kaoping River Estuary (KPE, southern Taiwan). UPGMA tree of nine populations showed two main groups: the first group included the SMR and Tamsui River Estuary (TSE) (both located northern Taiwan), and the second one included the other seven populations (west-central, southern and eastern Taiwan). Demographic analyses implied a population expansion occurred during the recent history of the species. The dispersal route of this species might be from China to west-central and west-southern Taiwan, and then the part individuals belonging to lineage A and B dispersed southerly and northerly, respectively. And then part individuals in west-central Taiwan fell back to and stay at estuaries as the sea level rose about 18,000 years ago.

Show MeSH
The observed pair-wise differences and the expected mismatch distributions under sudden expansion model of oriental river prawn.(a) All populations, (b) Lineage A, (c) Lineage B.
© Copyright Policy
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4696665&req=5

pone.0145927.g005: The observed pair-wise differences and the expected mismatch distributions under sudden expansion model of oriental river prawn.(a) All populations, (b) Lineage A, (c) Lineage B.

Mentions: No significant Tajima’s D found in this population (Table 1). However, Tajima’s D values were significant for each lineage and for when all populations were combined. The Fu’s Fs tests were significant for MTR and LLR populations (Table 1). The significant Fu’s Fs value was also obtained when all populations were combined. The significant Fu’s Fs values were found for lineage A and lineage B. The mismatch distribution of all specimens was bimodal (Fig 5A), with one mode corresponding to the number of differences within the lineages and the other one to differences between the two lineages. Separate analyses of lineage A and B in both cases yielded a unimodal distribution, which did not significantly differ (as measured by the sum of the squared deviation; P > 0.05) from that predicted by the growth expansion model (Fig 5B and 5C).


Population Structure and Historical Demography of the Oriental River Prawn (Macrobrachium nipponense) in Taiwan.

Chen PC, Shih CH, Chu TJ, Wang D, Lee YC, Tzeng TD - PLoS ONE (2015)

The observed pair-wise differences and the expected mismatch distributions under sudden expansion model of oriental river prawn.(a) All populations, (b) Lineage A, (c) Lineage B.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4696665&req=5

pone.0145927.g005: The observed pair-wise differences and the expected mismatch distributions under sudden expansion model of oriental river prawn.(a) All populations, (b) Lineage A, (c) Lineage B.
Mentions: No significant Tajima’s D found in this population (Table 1). However, Tajima’s D values were significant for each lineage and for when all populations were combined. The Fu’s Fs tests were significant for MTR and LLR populations (Table 1). The significant Fu’s Fs value was also obtained when all populations were combined. The significant Fu’s Fs values were found for lineage A and lineage B. The mismatch distribution of all specimens was bimodal (Fig 5A), with one mode corresponding to the number of differences within the lineages and the other one to differences between the two lineages. Separate analyses of lineage A and B in both cases yielded a unimodal distribution, which did not significantly differ (as measured by the sum of the squared deviation; P > 0.05) from that predicted by the growth expansion model (Fig 5B and 5C).

Bottom Line: All FST values among nine populations were significantly different except the one between Jhonggang River Estuary (JGE, west-central Taiwan) and Kaoping River Estuary (KPE, southern Taiwan).The dispersal route of this species might be from China to west-central and west-southern Taiwan, and then the part individuals belonging to lineage A and B dispersed southerly and northerly, respectively.And then part individuals in west-central Taiwan fell back to and stay at estuaries as the sea level rose about 18,000 years ago.

View Article: PubMed Central - PubMed

Affiliation: Institute of Fisheries Science, College of Life Science, National Taiwan University, Taipei, 106, Taiwan.

ABSTRACT
The oriental river prawn (Macrobrachium nipponense) is a non-obligatory amphidromous prawn, and it has a wide distribution covering almost the entire Taiwan. Mitochondrial DNA fragment sequences of the cytochrome oxidase subunit I (COI) and 16S rRNA were combined and used to elucidate the population structure and historical demography of oriental river prawn in Taiwan. A total of 202 individuals from six reservoirs and three estuaries were separately collected. Nucleotide diversity (π) of all populations was 0.01217, with values ranging from 0.00188 (Shihmen Reservoir, SMR, northern Taiwan) to 0.01425 (Mingte Reservoir, MTR, west-central Taiwan). All 76 haplotypes were divided into 2 lineages: lineage A included individuals from all sampling areas except SMR, and lineage B included specimens from all sampling locations except Chengching Lake Reservoir (CLR) and Liyu Lake Reservoir (LLR). All FST values among nine populations were significantly different except the one between Jhonggang River Estuary (JGE, west-central Taiwan) and Kaoping River Estuary (KPE, southern Taiwan). UPGMA tree of nine populations showed two main groups: the first group included the SMR and Tamsui River Estuary (TSE) (both located northern Taiwan), and the second one included the other seven populations (west-central, southern and eastern Taiwan). Demographic analyses implied a population expansion occurred during the recent history of the species. The dispersal route of this species might be from China to west-central and west-southern Taiwan, and then the part individuals belonging to lineage A and B dispersed southerly and northerly, respectively. And then part individuals in west-central Taiwan fell back to and stay at estuaries as the sea level rose about 18,000 years ago.

Show MeSH