Article
Environmental Sciences
Hye-Min Kang, Jihoon Lee, Yeon-Ju Lee, Yeun Park, Euihyeon Lee, A-Young Shin, Jeonghoon Han, Hyi-Seung Lee, Jong Seok Lee, Kyun-Woo Lee
Summary: This study investigates the toxicity effects of Saxitoxin (STX) on the copepod Tigriopus japonicus and analyzes the transcriptome changes in response to STX exposure. The results demonstrate that the half-maximal lethal concentration of STX for Tigriopus japonicus is 12.35μM, causing rapid mortality at concentrations between 12 and 13μM. Transcriptome analysis reveals significant enrichment of genes involved in the nervous system and gene expression. Network analysis and toxicity pathway analysis identify congenital neurological disorders and oxidative stress pathways as the most significant effects of STX.
Article
Engineering, Environmental
Racliffe Weng Seng Lai, Hye-Min Kang, Guang-Jie Zhou, Mana Man Na Yung, Yan Ling He, Alan Man Ching Ng, Xiao-yan Li, Aleksandra B. Djurisic, Jae-Seong Lee, Kenneth Mei Yee Leung
Summary: This study investigated the acute and chronic toxicities of coated zinc oxide nanoparticles on a marine copepod, revealing that surface coatings can affect the ion dissolution and zinc bioaccumulation of particles, different hydrophobicity coatings can influence the toxicity of particles, and the toxicity of coated metal-associated nanoparticles can be predicted by the properties of their surface coatings.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Kanghee Kim, Hakwon Yoon, Jin Soo Choi, Youn-Joo Jung, June-Woo Park
Summary: This study examines the impact of chronic exposure to polystyrene microplastics on the marine copepod Tigriopus japonicus. The size and concentration of the microplastics influenced survival rates, reproductive effects, and oxidative stress response in the copepods. Nano-sized microplastics were not always more toxic than micro-sized microplastics, and oxidative stress played a key role in the toxic effects observed.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Environmental Sciences
Yeun Park, Jae Gon Park, Hye-Min Kang, Jee-Hyun Jung, Moonkoo Kim, Kyun-Woo Lee
Summary: Proper management of wastewater from underwater hull cleaning equipment is crucial to reduce toxic effects on marine organisms.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Jeonghoon Han, Joon Sang Park, Yeun Park, Jihoon Lee, Hyun Ho Shin, Kyun-Woo Lee
Summary: The study investigated the response of the marine copepod Tigriopus japonicus to the toxic marine dinoflagellate Gymnodinium catenatum, revealing potential impacts on swimming behavior and detoxification mechanisms. Swimming speed and distance were significantly decreased at high concentrations of G. catenatum, while certain detoxification-related genes were upregulated or downregulated in response to G. catenatum exposure, suggesting a potential role as molecular biomarkers.
MARINE POLLUTION BULLETIN
(2021)
Article
Engineering, Environmental
Jiaji Sun, Shiyi Yang, Guang-Jie Zhou, Kai Zhang, Yichun Lu, Qianqian Jin, Paul K. S. Lam, Kenneth M. Y. Leung, Yuhe He
Summary: Surgical masks are widely used during the COVID-19 pandemic, but improper disposal may lead to serious microplastic pollution in coastal marine environments. Research shows that discarded masks could release over 1370 trillion microplastics globally in 2020, with a daily release rate of 396 billion, impacting marine ecosystems through ingestion by marine organisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2021)
Article
Immunology
Javad Sahandi, Patrick Sorgeloos, Kam W. Tang, Fanghong Mu, Tatyana Mayor, Wenbing Zhang
Summary: The use of beneficial microbes, or probiotics, is an important management strategy in mariculture. This study investigated the potential of four microbes to suppress pathogens and promote growth in Tigriopus japonicus. Results showed that Debaryomyces hansenii and Bacillus subtilis are promising probiotics for mass copepod culture.
MICROBIAL PATHOGENESIS
(2023)
Article
Environmental Sciences
Kaiming Yang, Siyuan Jing, Yang Liu, Hao Zhou, Yan Liu, Ming Yan, Xianliang Yi, Renyan Liu
Summary: Tire wear particles (TWPs) have been identified as microplastics and may have adverse effects on marine organisms. This study analyzed the chemical composition of TWPs and their leachate, identifying various organic compounds and metals. Toxicity identification evaluation revealed that zinc was the main toxicant in the TWP leachate. Additionally, the release of zinc from TWPs into the aquatic environment was found to be slow.
Article
Biochemistry & Molecular Biology
Hongju Chen, Jing Wang, Yunyun Zhuang, Wenzhuo Yu, Guangxing Liu
Summary: This study assessed the acute and chronic effects of the toxic dinoflagellate Karenia mikimotoi on the marine benthic copepod Tigriopus japonicus. The results showed that K. mikimotoi reproduction had negative effects on the survival and fitness of the copepods, and these effects were associated with oxidative stress.
Article
Marine & Freshwater Biology
Haizheng Hong, Jiaxin Wang, Dalin Shi
Summary: The study revealed that environmentally relevant concentrations of 4-MBC have toxic effects on Tigriopus japonicus, with increasing salinity levels further enhancing its lethal, developmental, and reproductive toxicities. This may be attributed to the higher salinity levels increasing the uptake rate constant and bioconcentration factor of 4-MBC, exacerbating the oxidative stress induced by 4-MBC exposure in T. japonicus.
AQUATIC TOXICOLOGY
(2021)
Article
Environmental Sciences
Jeonghoon Han, Yeun Park, Hyeryeong Jeong, Jun Chul Park
Summary: PM2.5 has significant effects on the life history traits, oxidative stress levels, and detoxification-related genes of Tigriopus japonicus.
MARINE POLLUTION BULLETIN
(2022)
Article
Engineering, Marine
Young-Joo Yun, Sung-Ah Kim, Jaehee Kim, Jae-Sung Rhee
Summary: This study analyzed the acute and chronic effects of diuron on the harpacticoid copepod Tigriopus japonicus. The acute exposure experiment showed that 1/10 LC50 diuron significantly reduced the copepod's feeding rate and acetylcholinesterase activity. Chronic exposure revealed adverse multigenerational effects, with the second generation being the most sensitive to diuron.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
Shin Yeong Park, Junghyun Lee, Seongjin Hong, Taewoo Kim, Seo Joon Yoon, Changkeun Lee, Bong-Oh Kwon, Wenyou Hu, Tieyu Wang, Jong Seong Khim
Summary: A copepod bioassay was used to evaluate the ecotoxicity of sediments in the Yellow and Bohai seas, and the contribution of individual PAHs to copepod toxicity was assessed. The study found that the Yellow Sea of China had the highest toxicity, followed by the Bohai Sea and Yellow Sea of Korea. Elevated concentrations of PAHs, alkylphenols, and styrene oligomers in the sediments supported the observed toxicities. It was also discovered that a large proportion of unknown toxicants were distributed along the Yellow Sea Large Marine Ecosystem coastline.
MARINE POLLUTION BULLETIN
(2022)
Article
Ecology
Adela Jing Li, Racliffe Weng Seng Lai, Guang-Jie Zhou, Priscilla To Yan Leung, Eddy Y. Zeng, Kenneth Mei Yee Leung
Summary: The contamination of copper in the marine environment is increasing, especially after the ban of organotin compounds and the increase of the use of Cu-based antifouling paints. This study aimed to investigate the interacting effect of temperature and copper exposure on survival and development in the marine copepod Tigriopus japonicus. The results showed that the interaction between Cu and temperature had a more significant impact on gene expressions than on apical endpoints.
Article
Environmental Sciences
Weili Mao, Jianli Qu, Songyang Zhong, Xilin Wu, Kaili Mao, Kaizhen Liao, Hangbiao Jin
Summary: Parabens, a family of endocrine-disrupting chemicals, may be associated with the development of lung cancer. The study conducted in Quzhou, China found that urinary concentrations of methyl-paraben and propyl-paraben are positively associated with the risk of lung cancer in adults.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Fisheries
Chengyan Han, Hee-Jin Kim, Jae-Seong Lee, Yoshitaka Sakakura, Atsushi Hagiwara
Summary: This study investigates the tolerance, reproduction, behavior, and mitochondria-mediated stress and energy defenses of two species of rotifers, Brachionus plicatilis and Brachionus rotundiformis, following zinc chloride exposure. The results show that higher concentrations of zinc chloride inhibited reproductive processes in B. plicatilis but stimulated sexual reproduction in B. rotundiformis. The two species also exhibited different metabolic patterns and behavioral responses to zinc exposure.
Article
Ecology
Deok-Seo Yoon, Hyuntae Choi, Alaa El -Din H. Sayed, Kyung-Hoon Shin, Joung Han Yim, Sanghee Kim, Min-Chul Lee, Jae-Seong Lee
Summary: Changes in temperature and starvation affect metabolism and fatty acid composition in zooplankton. However, little is known about fatty acid modulation in Antarctic zooplankton. This study investigated the changes in life history parameters and fatty acid profiles in the Antarctic copepod Tigriopus kingsejongensis under starvation at four different temperatures. The results showed that higher temperatures accelerated the development of T. kingsejongensis and increased overall offspring production. Starvation and higher temperatures led to a decrease in polyunsaturated fatty acids (PUFAs) and an increase in saturated fatty acids in T. kingsejongensis. However, specific PUFAs, such as docosahexaenoic acid and docosapentaenoic acid, increased under starvation and higher temperatures. This study provides valuable insights into fatty acid regulation in Antarctic copepods under environmental stressors.
REGIONAL STUDIES IN MARINE SCIENCE
(2023)
Article
Engineering, Environmental
Young Hwan Lee, Min -Sub Kim, Yoseop Lee, Duck-Hyun Kim, Jae-Seong Lee
Summary: Ocean acidification (OA) and nanoplastics (NPs) have a synergistic negative effect on copepod reproduction across generations, potentially posing a significant threat to the sustainability of copepod populations. The intergenerational reproductive impairments observed are associated with differential methylation patterns of specific genes, indicating the role of epigenetic modifications. These findings contribute valuable insight into the intergenerational toxicity and underlying molecular mechanisms of responses to NPs under OA conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Zoology
M. Pyznar, P. Maszczyk, B. Kiersztyn, K. Dabrowski, M. L. Zebrowski, J. -s. Lee, E. Babkiewicz
Summary: Very few studies have examined the influence of fish on the degradation rate of microplastic particles. This study aimed to test the short-term effects of fish presence on water chemical parameters and the abundance and genetic diversity of bacteria colonizing microplastics. The presence of fish increased the concentration of certain chemicals in the water and the number of bacteria, which in turn led to an increase in the abundance and diversity of bacteria on the surface of microplastics.
EUROPEAN ZOOLOGICAL JOURNAL
(2023)
Article
Fisheries
Jun Bo, Ronghui Zheng, Yulu Jiang, Jincan Chen, Chao Fang, Christyn Bailey, Yusheng Zhang, Jae-Seong Lee, Helmut Segner
Summary: Global warming and changes in environmental conditions may impact the health of marine species. This study examined the liver transcriptome and proteome of the hybrid grouper to understand the physiological pathways affected by climate change-related stressors. The results revealed time-dependent and stressor-specific responses, with elevated temperature having a dominant effect.
Article
Marine & Freshwater Biology
Yoseop Lee, Eunjin Byeon, Duck-Hyun Kim, Piotr Maszczyk, Minghua Wang, Rudolf Shiu Sun Wu, Hee-Do Jeung, Un-Ki Hwang, Jae-Seong Lee
Summary: Global deoxygenation is an increasing environmental problem that affects aquatic systems and has substantial effects on aquatic invertebrates. Studies have shown that exposure to hypoxia leads to decreased locomotion, respiration, feeding, growth, and reproduction rates in these animals. However, further research is needed to fully understand the molecular mechanisms and alternative defense mechanisms involved in responding to hypoxia.
AQUATIC TOXICOLOGY
(2023)
Review
Biochemistry & Molecular Biology
Paweena Sanpradit, Eunjin Byeon, Jae-Seong Lee, Saranya Peerakietkhajorn
Summary: Climate change affects aquatic ecosystems by raising water temperature, which in turn has adverse effects on organisms. The mass production of zinc oxide during industrial activities has led to environmental contamination, making the toxicological effects of zinc oxide more concerning under climate change scenarios. Understanding the toxicity of zinc oxide under the main factors driven by climate change is crucial.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2023)
Article
Environmental Sciences
Ibrahim A. Mohamed, Hamdy A. M. Soliman, Mervat Hana, Jae-Seong Lee, Alaa El -Din H. Sayed
Summary: Acute toxicity experiments were conducted to determine the LC50 of UPGR 46% SL for Oreochromis niloticus, and the 96-h LC50 value was found to be 29.16 mg L-1. Hemato-biochemical effects were also studied, and it was discovered that UPGR exposure led to a significant decrease in various blood parameters, while sub-acute exposure resulted in an increase in certain parameters. The antagonistic toxic effects of UPGR and PE-MPs might be due to the sorption of UPGR onto PE-MPs.
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2023)
Article
Engineering, Environmental
Young Hwan Lee, Min-Sub Kim, Yoseop Lee, Chuxin Wang, Seong Chan Yun, Jae-Seong Lee
Summary: This study investigated the effects of interactions between microfibers and freshwater acidification (MFA) on individual Daphnia magna-microbiota interactions. The results showed that MFA interactions can have negative consequences on reproduction, growth, and sex ratio of D. magna, and can induce changes in immunity-and reproduction-related biological processes. The study also revealed that these adverse effects are closely related to changes in microbial communities, suggesting a causal link between D. magna fitness and the microbial community.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Marine & Freshwater Biology
Mohamed Hamed, Christopher J. Martyniuk, Jae-Seong Lee, Huahong Shi, Alaa El-Din H. Sayed
Summary: Marine environments in Egypt are facing a significant issue of microplastic pollution, which potentially harms aquatic organisms. This study evaluated the occurrence, abundance, and distribution of microplastics in marine fishes from the Mediterranean and Red seas in Egypt. The results showed that microplastics were present in the gastrointestinal system of fish at markets but not in muscle or liver. The size of the fish, its diet, and habitat were found to be key factors related to the bioaccumulation of microplastics in fish species. The study concludes that it is crucial to remove plastics from the sea, considering the risks they pose to fisheries and marine ecosystems.
JOURNAL OF SEA RESEARCH
(2023)
Article
Engineering, Environmental
In-Cheol Yeo, Kyu-Young Shim, Kyuhyeong Kim, Young-Shin Go, Jieun Kim, Dong-Hun Lee, Jae-Seong Lee, Kyung-Hoon Shin, Chang-Bum Jeong
Summary: Despite limited understanding and analysis of the biological fate of nanoplastics, a novel stable carbon isotopic approach has been proposed to detect and quantify nano- and microplastics in complex organic matrices. By quantifying the contribution of plastic particles in the stable carbon isotopes composition in different tissues, tissue-specific bioaccumulation of nano- and microplastics in a fish species has been investigated. The findings shed light on the unique mode of action of nanoplastics' bioaccumulation based on physicochemical properties and have significance in improving our understanding of the tissue-specific bioaccumulation of nanoplastics in aquatic organisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Ecology
Piotr Maszczyk, Wojciech Wilczynski, Z. Maciej Gliwicz, Konrad Leniowski, Marcin Lukasz Zebrowski, Jae-Seong Lee, Ewa Babkiewicz
Summary: The temperature-size rule (TSR) states that ectotherms reared at higher temperatures experience accelerated growth during the juvenile stage and ultimately reach smaller sizes and younger ages at maturity. This phenomenon occurs when the effect of temperature on mortality outweighs its effect on food intake and metabolism. In a study with two fish species, it was found that the capture rate, a proxy for mortality, increased significantly more than expected based on the assumption that Q(10) = 2, indicating a stronger effect of temperature on mortality. This could be attributed to the increased mobility and attack rate of the fish at elevated temperatures compared to its planktonic prey.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Engineering, Environmental
Min-Sub Kim, Young Hwan Lee, Yoseop Lee, Eunjin Byeon, Duck-Hyun Kim, Minghua Wang, Atsushi Hagiwara, Manuel Aranda, Rudolf Shiu Sun Wu, Heum Gi Park, Jae-Seong Lee
Summary: The susceptibility of filter-feeding rotifers to high CO2 conditions and nanoplastic exposure depends on their adaptation history. Rotifers with different adaptation histories showed differences in ingestion and accumulation of nanoplastics, which may be related to microRNA-mediated epigenetic regulation.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Fisheries
Mi-Song Hong, Deok-Seo Yoon, Ji-Su Kim, Heum Gi Park, Jae-Seong Lee, Min-Chul Lee
Summary: We conducted a comprehensive analysis of the effects of increased salinity on Brachionus plicatilis, finding delays in maturation and potential disruptions in the reproductive process. High salinity also impedes growth and alters swimming behavior. Additionally, we discovered distinctive sequences of FABPs in three Brachionus species, contributing to our understanding of their evolutionary positioning.
