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Zhao D, Kong LF, Sasaki T, Li Q. Molecular Species Delimitation of the Genus Reishia (Mollusca: Gastropoda) along the Coasts of China and Korea. Zoolog Sci 2020; 37:382-390. [PMID: 32729717 DOI: 10.2108/zs190153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/22/2020] [Indexed: 11/17/2022]
Abstract
Species of the predatory gastropod genus Reishia Kuroda and Habe, 1971 (Muricidae) inhabit intertidal rocky shores in East Asia. Due to their highly variable external shell morphology, the taxonomy of this genus at species-level is still in need of re-evaluation. Using DNA-based delimitation methods, we aimed to ascertain the number of species of Reishia along the coasts of China and adjacent Asian areas. Also, we looked for diagnostic traits using morphology-based statistical approaches. Our genetic data suggest that the studied individuals comprised two separate species of a Reishia complex in this region, in contrast to the previously proposed four or more taxa. This conclusion is further supported by statistical analyses of shell morphological characteristics. The morphospecies R. bronni (Dunker, 1860), R. jubilaea (Tan and Sigurdsson, 1990), and R. luteostoma (Holten, 1803) were assigned to a single taxon, indicating that they might be synonyms of the same species. The morphospecies R. clavigera (Küster, 1860) singly formed one group, suggesting that it is likely a valid name. The estimated divergence time of the two identified taxa indicates that speciation might have been associated with the sea level and temperature fluctuations during the Plio-Pleistocene period. Our study on Reishia species provides crucial information for further research on the ecology, evolutionary biology, and conservation of this genus.
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Affiliation(s)
- Dan Zhao
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China.,Fisheries College, Zhejiang Ocean University, Zhoushan 316022, China
| | - Ling-Feng Kong
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Takenori Sasaki
- The University Museum, The University of Tokyo, Tokyo 113-0033, Japan
| | - Qi Li
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China.,Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China,
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Fang L, Xu C, Li J, Borggaard OK, Wang D. The importance of environmental factors and matrices in the adsorption, desorption, and toxicity of butyltins: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9159-9173. [PMID: 28160180 DOI: 10.1007/s11356-017-8449-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Accepted: 01/11/2017] [Indexed: 06/06/2023]
Abstract
Butyltins (BTs) are considered as a group of the most important organometallic compounds in industry and agriculture. Due to their widespread use, large amounts of BTs including tributyltin (TBT), dibutyltin (DBT), and monobutyltin (MBT) have entered into the environment, and subsequently causing detrimental effects on humans and aquatic organisms. This work provides a critical review of recent studies on the adsorption, desorption, bioaccumulation, and toxicity of BTs that can notably influence the distribution of BTs in the environment. Influence of environmental factors (e.g., pH and salinity) and adsorbents in the matrices (e.g., minerals, organic carbons, and quartz) on the adsorption, desorption, and toxicity of BTs is particularly addressed.
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Affiliation(s)
- Liping Fang
- Department of Chemistry, Faculty of Material Sciences and Chemistry, China University of Geosciences, Wuhan, 430074, China.
| | - Cuihong Xu
- Department of Chemistry, Faculty of Material Sciences and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Ji Li
- Department of Chemistry, Faculty of Material Sciences and Chemistry, China University of Geosciences, Wuhan, 430074, China.
| | - Ole K Borggaard
- Department of Plant and Environmental Sciences, University of Copenhagen, Thorvaldsensvej 40, DK-1871, Frederiksberg C, Denmark
| | - Dongsheng Wang
- Department of Chemistry, Faculty of Material Sciences and Chemistry, China University of Geosciences, Wuhan, 430074, China
- State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
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Kim T, Jeon S, Hong S, Song SJ, Kwon BO, Ryu J, Khim JS. Spatiotemporal distributions of butyltin compounds in various intertidal organisms along the Samcheok and Tongyeong coasts of Korea. CHEMOSPHERE 2017; 172:268-277. [PMID: 28081511 DOI: 10.1016/j.chemosphere.2016.12.152] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 12/22/2016] [Accepted: 12/31/2016] [Indexed: 06/06/2023]
Abstract
Thirteen years ago, the Korean Government introduced a regulation prohibiting the use of tributyltin (TBT), which was a component of antifouling paints. A subsequent decline in the concentration of butyltins (BTs) was recorded in seawater and the sediment, however, the current concentration of BTs in biota has not been well documented. The spatiotemporal distribution and concentration of BTs was recorded in biota from 2013 to 2015 along the coasts of Samcheok and Tongyeong using GS/MSD analysis. Crustaceans contained the greatest concentrations of BTs, followed by gastropods, fishes, and bivalves. We found that the concentration of BTs was greater at Tongyeong compared to Samcheok, because of the geographical characteristics of the area. We also confirmed that the regulation has been effective by showing that the TBT concentration decreased over the 3-year study period. The TBT levels of gastropods and bivalves fell within the limits of the guidelines and/or the effective concentration of the toxicological endpoint reported previously. The concentration of BTs also varied among species, being dependent on the weight of the soft tissue. Furthermore, the greater quantities of BTs degradation products compared to TBT confirmed the absence of recent inputs of pollutants during the study periods. However, compared with other Asian countries, biota BTs were greater in Korea, with noticeably greater concentrations along the south coast. Thus, further investigation of the distribution of BTs along the Korean coasts is required in the future. In conclusion, our results provide useful information about the recent trends of BTs in Korea.
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Affiliation(s)
- Taewoo Kim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul, Republic of Korea
| | - Seungyeon Jeon
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul, Republic of Korea
| | - Seongjin Hong
- Department of Ocean Environmental Sciences, Chungnam National University, Daejeon, Republic of Korea
| | - Sung Joon Song
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul, Republic of Korea
| | - Bong-Oh Kwon
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul, Republic of Korea
| | - Jongseong Ryu
- Department of Marine Biotechnology, Anyang University, Ganghwagun, Incheon, Republic of Korea
| | - Jong Seong Khim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul, Republic of Korea.
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Ho KKY, Zhou GJ, Xu EGB, Wang X, Leung KMY. Long-Term Spatio-Temporal Trends of Organotin Contaminations in the Marine Environment of Hong Kong. PLoS One 2016; 11:e0155632. [PMID: 27176721 PMCID: PMC4866715 DOI: 10.1371/journal.pone.0155632] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 05/01/2016] [Indexed: 11/18/2022] Open
Abstract
Hong Kong imposed a partial restriction on application of organotin-based antifouling paints in 1992. Since September 2008, the International Maritime Organization prohibited the use of such antifouling systems on all sea-going vessels globally. Therefore, it is anticipated a gradual reduction of organotin contamination in Hong Kong's marine waters. Using the rock shell Reishia clavigera as a biomonitor, we evaluated the organotin contamination along Hong Kong's coastal waters over the past two decades (1990-2015). In 2010 and 2015, adult R. clavigera were examined for imposex status and analysed for tissue concentrations of six organotins. We consistently found 100% imposex incidence in female R. clavigera across all sites. Tissue triphenyltin (TPT) concentrations were high in most samples. A probabilistic risk assessment showed that there were over 69% of chance that local R. clavigera would be at risk due to exposure to phenyltins. Comparing with those of previous surveys (2004-2010), both imposex levels and tissue concentrations of organotins did not decline, while the ecological risks due to exposure to organotins were increasing. We also observed high concentrations of monobutyltin and TPT in seawater and sediment from locations with intense shipping activities and from stormwater or sewage discharge. Overall, organotins are still prevalent in Hong Kong's marine waters showing that the global convention alone may be inadequate in reducing organotin contamination in a busy international port like Hong Kong. Appropriate management actions should be taken to control the use and release of organotins in Hong Kong and South China.
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Affiliation(s)
- Kevin K. Y. Ho
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Guang-Jie Zhou
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Elvis G. B. Xu
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Xinhong Wang
- State Key Laboratory of Marine Environmental Science (Xiamen University), Xiamen University, Xiamen, China
| | - Kenneth M. Y. Leung
- The Swire Institute of Marine Science and School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong, China
- The State Key Laboratory in Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
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Guo YW, Zhang Y, Huang X, Gao KS, Wang KJ, Ke CH, Huang HQ. Proteomic analysis of dimethoate-responsive proteins in the oyster (Saccostrea cucullata) gonad. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2012; 19:2248-2258. [PMID: 22237506 DOI: 10.1007/s11356-011-0729-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Accepted: 12/27/2011] [Indexed: 05/31/2023]
Abstract
INTRODUCTION The organophosphorus pesticide dimethoate (DM) has been widely used in agriculture, and its extensive use could still have left many environmental problems. METHODS In the present study, the oyster (Saccostrea cucullata) was subjected to acute DM toxicity (2 mg/L), and gas chromatographic analysis revealed and quantified residues of DM in the oyster gonad. RESULTS Two-dimensional gel electrophoresis showed 12 differentially expressed proteins in the DM-exposed oyster gonad in comparison to the control. Among these 12 protein spots, nine were down-regulated, and three were up-regulated. Both matrix-assisted laser desorption/ionization time-of-flight tandem mass spectrometry and database searching were utilized to identify these differential proteins, and revealed five proteins previously described as being related to DM toxicity. In addition, the levels of mRNA expression corresponding to these differential proteins were further proved in part by real-time PCR. The functions of these proteins were summarized as: carrying out energy metabolism, DNA repair, DNA transcriptional regulation, and oxidative protection. The remaining seven protein spots were of particular interest in terms of their responses to DM, which have seldom been reported. CONCLUSION These data might point to a number of novel and significant biomarkers for evaluating the contamination levels of DM and provide useful insight into the mechanisms of DM toxicity in vivo.
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Affiliation(s)
- Yan-Wei Guo
- State Key Laboratory of Stress Cell Biology, School of Life Sciences, Xiamen University, Xiamen 361005, China
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Lee SH, Kim TH, Lee JH, Lee JR, Park JK. Mitochondrial DNA Sequence Variations and Genetic Relationships among Korean Thais Species (Muricidae: Gastropoda). ANIMAL SYSTEMATICS, EVOLUTION AND DIVERSITY 2011. [DOI: 10.5635/kjsz.2011.27.1.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Occurrence and chemical speciation analysis of organotin compounds in the environment: A review. Talanta 2010; 82:9-24. [DOI: 10.1016/j.talanta.2010.04.046] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Revised: 04/18/2010] [Accepted: 04/19/2010] [Indexed: 11/22/2022]
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