TY - JOUR
T1 - Population genetic analysis reveals secondary contact between Eriocheir sinensis and E. japonica in South Korea
AU - Jung, Jibom
AU - Wu, Xugan
AU - Park, Taeseo
AU - Lee, Seok hyun
AU - Hwang, Hee seung
AU - Jung, Juwon
AU - Jung, Jongwoo
N1 - Funding Information:
This work supported by National Institute of Biological Resources, Korea (NIBR) research grant (NIBR202106101), Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2021R1A6A1A10039823) and the RP-Grant 2021 of Ewha Womans University. Dr. Sang-Kyu Lee (Seoul National University) and Dr. Hyun Kyong Kim (Honam National Institue of Biological Resources) helped with the study material sampling. Meijun Tang participated in the manuscript review.
Funding Information:
This work supported by National Institute of Biological Resources, Korea (NIBR) research grant (NIBR202106101), Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2021R1A6A1A10039823) and the RP-Grant 2021 of Ewha Womans University. Dr. Sang-Kyu Lee (Seoul National University) and Dr. Hyun Kyong Kim (Honam National Institue of Biological Resources) helped with the study material sampling. Meijun Tang participated in the manuscript review.
Publisher Copyright:
© 2022, The Author(s) under exclusive licence to The Genetics Society of Korea.
PY - 2022/5
Y1 - 2022/5
N2 - Background: The Chinese mitten crab (Eriocheir sinensis) and the Japanese mitten crab (E. japonica) of the family Varunidae, which are also critical fishery species in their native habitats, including China, Japan, and South Korea, exhibit a rare migration life history for the decapod life cycle. Eriocheir sinensis and E. japonica in South Korea may have originated from speciation or secondary contact in South Korea after speciation of these two species; however, the genetic relationship between these South Korean populations remains unclear, and need to be clarified. Objective: This study examined the population genetic properties of E. sinensis and E. japonica in South Korea to reveal the origin of their co-existence. Methods: Mitochondrial DNA cytochrome c oxidase I sequences of 120 E. sinensis and E. japonica from 6 sampling sites in South Korea were sequenced. Their genetic diversity and haplotype data were compared to previously reported data from the Chinese mainland, Taiwan, Japan, and Russia. Results: The haplotype network, analysis of molecular variance, FST values, Mantel test, and Bayesian skyline plot results of South Korean E. sinensis and E. japonica demonstrated that E. sinensis and E. japonica were isolated from their central populations, Chinese and Japanese populations, by the distance due to the temperature, salinity, ocean current flow, or a geohistorical event. In addition, genetic analysis indicated that the South Korean populations of the two species were marginal populations, exhibiting low genetic diversity, significant negative neutrality values, and radial haplotype networks. The current results also suggest that the Geum River is an overlapping habitat for the natural populations of E. sinensis and E. japonica in South Korea. Further research is required to examine the geohistorical and evolutionary event between E. sinensis and E. japonica in South Korea. Conclusions: The co-existence of E. sinensis and E. japonica in South Korea may have originated from secondary contact after their speciation.
AB - Background: The Chinese mitten crab (Eriocheir sinensis) and the Japanese mitten crab (E. japonica) of the family Varunidae, which are also critical fishery species in their native habitats, including China, Japan, and South Korea, exhibit a rare migration life history for the decapod life cycle. Eriocheir sinensis and E. japonica in South Korea may have originated from speciation or secondary contact in South Korea after speciation of these two species; however, the genetic relationship between these South Korean populations remains unclear, and need to be clarified. Objective: This study examined the population genetic properties of E. sinensis and E. japonica in South Korea to reveal the origin of their co-existence. Methods: Mitochondrial DNA cytochrome c oxidase I sequences of 120 E. sinensis and E. japonica from 6 sampling sites in South Korea were sequenced. Their genetic diversity and haplotype data were compared to previously reported data from the Chinese mainland, Taiwan, Japan, and Russia. Results: The haplotype network, analysis of molecular variance, FST values, Mantel test, and Bayesian skyline plot results of South Korean E. sinensis and E. japonica demonstrated that E. sinensis and E. japonica were isolated from their central populations, Chinese and Japanese populations, by the distance due to the temperature, salinity, ocean current flow, or a geohistorical event. In addition, genetic analysis indicated that the South Korean populations of the two species were marginal populations, exhibiting low genetic diversity, significant negative neutrality values, and radial haplotype networks. The current results also suggest that the Geum River is an overlapping habitat for the natural populations of E. sinensis and E. japonica in South Korea. Further research is required to examine the geohistorical and evolutionary event between E. sinensis and E. japonica in South Korea. Conclusions: The co-existence of E. sinensis and E. japonica in South Korea may have originated from secondary contact after their speciation.
KW - Eriocheir japonica
KW - Eriocheir sinensis
KW - Isolation by distance model
KW - Last Glacial maximum
KW - Marginal populations
KW - Population genetics
KW - Secondary contact
UR - http://www.scopus.com/inward/record.url?scp=85127384044&partnerID=8YFLogxK
U2 - 10.1007/s13258-021-01198-6
DO - 10.1007/s13258-021-01198-6
M3 - Article
C2 - 35353343
AN - SCOPUS:85127384044
SN - 1976-9571
VL - 44
SP - 593
EP - 602
JO - Genes and Genomics
JF - Genes and Genomics
IS - 5
ER -