Updated on 2024/09/30

Information

 

写真a

 
TAKAI YUKI
 
Organization
Faculty of Agriculture Department of Bioresource Sciences Assistant Professor
School of Agriculture Department of Bioresource and Bioenvironment（Joint Appointment）
Graduate School of Bioresource and Bioenvironmental Sciences Department of Bioresource Sciences（Joint Appointment）
Title
Assistant Professor
Contact information
メールアドレス
Tel
0928024607
Profile
I'm investigating how pollutants (such as chemicals and microplastics) affect the behavior of aquatic organisms in the aquatic environment, and what experimental methods can be used to evaluate these effects. Specifically, I'm developing and examining toxicity assessment methods base on the behavioral characteristics (individuality) of fish.
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Research Areas

  • Environmental Science/Agriculture Science / Environmental impact assessment

  • Environmental Science/Agriculture Science / Chemical substance influence on environment

  • Life Science / Animal physiological chemistry, physiology and behavioral biology

Degree

  • Ph.D. (Agriculture)

Research History

  • Kyushu University Faculty of Agriculture Assistant professor (tenure track)

    2023.10 - Present

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  • Japan Society for the Promotion of Science JSPS Research Fellowship for Young Scientists (PD)

    2023.4 - 2023.9

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  • Japan Society for the Promotion of Science JSPS Research Fellowship for Young Scientists (DC2)

    2022.4 - 2023.3

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Education

  • Kyushu University   Graduate School of Bioresource and Bioenvironmental Sciences   Bioresource Sciences

    2020.4 - 2023.3

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    Country： Japan

    Notes： Doctoral course

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Research Interests・Research Keywords

  • Research theme：Development of non-invasive environmental monitoring methods for organisms in coastal areas

    Keyword：Environmental monitoring, Non-invasive monitoring

    Research period： 2024.4

  • Research theme：Development and Evaluation of Assessment Methods for the Effect of Pollutants Based on the Behavioral Characteristics of Medaka Fish

    Keyword：Behavioral alteration, chemical pollutants, microplastics

    Research period： 2022.4

  • Research theme：Ph.D. dissertation: Establishment of the One-Compartment Model to Quantify the Microplastics Vector Effect

    Keyword：Microplastics, vector effect

    Research period： 2021.4 - 2023.3

  • Research theme：Master thesis: Genome Editing of Takifugu rubripes using CRISPR/Cas9 system

    Keyword：CRISPR/Cas9 system, Takifugu rubripes

    Research period： 2014.4 - 2016.3

  • Research theme：Undergraduate thesis: Study of the novel transcription factor (bHLH-type transcription factor, AKS) in the stomatal closure mechanism of Arabidopsis thaliana

    Keyword：Arabidopsis thaliana, stomata, ABA

    Research period： 2012.10 - 2014.3

Awards

  • 2024年度博士研究奨励賞（オルガノ賞）

    2024.9   日本水環境学会   新規行動影響評価手法Peek-A-Boo Testの開発：汎用的かつ高感度なメダカの行動影響評価手法の開発を目指して

    高井優生

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    Award type：Award from Japanese society, conference, symposium, etc.  Country：Japan

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  • The Best Young Scientist Platform Presentation Award

    2024.8   21st International Symposium on Toxicity Assessment   Peek-A-Boo Test: Assessing the Behavioral Impact of Diazepam and Chlorpyrifos on Medaka Fish (Oryzias latipes)

    Yuki Takai

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    Award type：Award from international society, conference, symposium, etc.  Country：Japan

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  • Panda杯全日本青年作文コンクール2023（入選）

    2023.11   中国外文局アジア太平洋広報センター（人民中国雑誌社）、中華人民共和国駐日本国大使館、公益財団法人日本科学協会   されど僕は嫌いではない

  • Panda杯全日本青年作文コンクール2023入選

    2023.11   中国外文局アジア太平洋広報センター（人民中国雑誌社）、中華人民共和国駐日本国大使館、公益財団法人日本科学協会   されど僕は嫌いではない

    高井優生

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    Award type：Award from publisher, newspaper, foundation, etc.  Country：Japan

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  • 第21回生物資源環境科学府賞

    2023.3   九州大学   A study on the vector effect of microplastics for Java medaka (Oryzias javanicus) and Japanese medaka (Oryzias latipes)

  • The Award of Graduate School of Bioresource and Bioenvironmental Sciences

    2023.3   Kyushu University   A study on the vector effect of microplastics for Java medaka (Oryzias javanicus) and Japanese medaka (Oryzias latipes)

    Yuki Takai

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    Country：Japan

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  • The PPAW Excellent Poster Presentation Award

    2022.3   Plastic pollution in Asian waters  

  • 笹川科学研究奨励賞

    2022.3   公益財団法人日本科学協会   海産魚類におけるエンドサイトーシスはマイクロプラスチックのベクター効果を増強するか？

  • 笹川科学研究奨励賞

    2022.3   公益財団法人日本科学協会   海産魚類におけるエンドサイトーシスはマイクロプラスチックのベクター効果を増強するか？

    高井優生

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    Award type：Award from publisher, newspaper, foundation, etc.  Country：Japan

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  • The PPAW Excellent Poster Presentation Award

    2022.3   Plastic pollution in Asian waters   The vector effect of fine microplastics: Combined effect of polystyrene microplastics and anthracene on Java medaka

    Yuki Takai

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    Award type：Award from international society, conference, symposium, etc.  Country：Japan

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  • 若手奨励賞

    2021.8   環境毒性学会   微小マイクロプラスチックと向精神薬ジアゼパムとの同時曝露がメダカの群れ形成行動に及ぼす影響

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Papers

  • Metal distribution in three organs and edibility assessment on<i> Coptodon rendalli</i> from the Umgeni River impacted by metallurgic industrial activities

    Hlatshwayo, SSB; Bissessur, A; Selala, MC; Takai, Y; Lebepe, J

    ENVIRONMENTAL MONITORING AND ASSESSMENT   196 ( 8 )   742   2024.8   （ ISSN:0167-6369 eISSN:1573-2959 ）

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    Language：English   Publisher：Environmental Monitoring and Assessment  

    Fish is among the most affordable and readily available protein sources for communities residing near water bodies. However, the recent pollution status of aquatic ecosystems has rendered fish consumption risky for human health. The study evaluated metal levels in the liver, gill, and muscle tissues of Redbreast tilapia (Coptodon rendalli) from Inanda and Nagle dams in the uMgeni River system. Metals, Al, Sb, Cd, Cr, Fe, Mn, Mo, Pb, and Zn were analysed using ICP-OES. Fish size showed no significant difference between the two dams (p > 0.05) whereas a descending trend liver > gill > muscle was observed for most metal levels at both dams. Moreover, there was a clear separation for metal levels in the liver, gill, and muscle between the two dams (p < 0.001) and a similar trend was observed for organs in each dam (p < 0.001). No relationship was observed between fish length and metal levels and no definite trend was observed for inter-metal relationships. Antimony, Cr, and Pb showed THQs greater than 1 at both dams which suggests health risks for consumers. Molybdenum has also shown a concerning THQs with some individuals exhibiting values ranging from 0.5 – 0.9. These findings suggest that consuming C. rendalli from the Inanda and Nagle dams could result in adverse health effects from Sb, Cr and Pb.

    DOI： 10.1007/s10661-024-12875-w

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  • Diurnal-Rhythmic Relationships between Physiological Parameters and Photosynthesis- and Antioxidant-Enzyme Genes Expression in the Raphidophyte <i>Chattonella marina</i> Complex

    Mukai, K; Qiu, XC; Takai, Y; Yasuo, S; Oshima, Y; Shimasaki, Y

    ANTIOXIDANTS   13 ( 7 )   2024.7   （ ISSN:2076-3921 eISSN:2076-3921 ）

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    Language：English   Publisher：Antioxidants  

    Diurnal rhythms in physiological functions contribute to homeostasis in many organisms. Although relationships between molecular biology and diurnal rhythms have been well studied in model organisms like higher plants, those in harmful algal bloom species are poorly understood. Here we measured several physiological parameters and the expression patterns of photosynthesis-related and antioxidant-enzyme genes in the Chattonella marina complex to understand the biological meaning of diurnal rhythm. Under a light–dark cycle, Fv/Fm and expression of psbA, psbD, and 2-Cys prx showed significant increases in the light and decreases during the dark. These rhythms remained even under continuous dark conditions. DCMU suppressed the induction of psbA, psbD, and 2-Cys prx expression under both light regimes. Oxidative stress levels and H2O2 scavenging activities were relatively stable, and there was no significant correlation between H2O2 scavenging activities and antioxidant-enzyme gene expression. These results indicate that the Chattonella marina complex has developed mechanisms for efficient photosynthetic energy production in the light. Our results showed that this species has a diurnal rhythm and a biological clock. These phenomena are thought to contribute to the efficiency of physiological activities centered on photosynthesis and cell growth related to the diurnal vertical movement of this species.

    DOI： 10.3390/antiox13070781

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  • First application of one-class support vector machine algorithms for detecting abnormal behavior of marine medaka <i>Oryzias javanicus</i> exposed to the harmful alga <i>Karenia mikimotoi</i>

    Chairil, AE; Takai, Y; Koba, Y; Kijimoto, S; Tsuruda, Y; Kang, IJ; Oshima, Y; Shimasaki, Y

    LIMNOLOGY AND OCEANOGRAPHY-METHODS   22 ( 6 )   388 - 398   2024.6   （ ISSN:1541-5856 ）

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    Publisher：Limnology and Oceanography: Methods  

    It is empirically known that fish exposed to harmful algal blooms (HABs) exhibit abnormal behavior. This might serve as a method for early detection of HABs. There has been no report of the detection of behavioral abnormalities of fish exposed to harmful algae using machine learning. In this study, the behavior of Oryzias javanicus (Java medaka) exposed in a stepwise manner to the HAB species Karenia mikimotoi at densities of 0 cells mL−1 (control), 1 × 103 cells mL−1 (nonlethal), and 5 × 103 cells mL−1 (sublethal) was recorded for 30 min at each cell density using two digital cameras connected to a software that tracked behavioral metrics of fish. The level of anomaly in the behavior of Java medaka was then analyzed using one-class support vector machines (OC-SVM) to determine whether the behavioral changes could be considered abnormal. The results revealed abnormal swimming behavior evidenced by an increase of swimming speed, a decrease of shoaling behavior, and a greater depth of swimming in Java medaka exposed especially to the sublethal K. mikimotoi density. The medaka exposed to K. mikimotoi also displayed physical deformities of their gills that were thought to have caused their abnormal behavior. This supposition was confirmed by further analysis using OC-SVM because the behavior of groups exposed to nonlethal and sublethal densities of K. mikimotoi were considered abnormal compared with that of the control groups. The results of this study show the possibility of using this system for early and real-time detection of HABs.

    DOI： 10.1002/lom3.10613

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  • Alteration of shoaling behavior and dysbiosis in the gut of medaka (Oryzias latipes) exposed to 2-μm polystyrene microplastics

    Yui Tamura, Yuki Takai, Hirokuni Miyamoto, Lee SeokHyun, Yangqing Liu, Xuchun Qiu, IK Joon Kang, Yohei Simasaki, Chie Shindo, Wataru Suda, Hiroshi Ohno, Yuji Oshima

    Chemosphere   353   141643   2024.3   （ ISSN:00456535 ）

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    Language：Others   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.chemosphere.2024.141643

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  • Peek‐A‐Boo Test: A Simple Test for Assessing the Effect of Anxiolytics on Fish Behavior Reviewed International journal

    Yuki Takai, Mutsumi Izumi, Yuriko Motoyama, Yohei Shimasaki, Yuji Oshima, Ik Joon Kang

    Environmental Toxicology and Chemistry   42 ( 11 )   2358 - 2363   2023.11   （ ISSN:0730-7268 eISSN:1552-8618 ）

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    DOI： 10.1002/etc.5713

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  • Size effect of polystyrene microplastics on the accumulation of anthracene for Java medaka (Oryzias javanicus)

    Yuki Takai, Akiyo Tominaga, Yukiya Uchida, Masato Honda, Xuchun Qiu, Yohei Shimasaki, Yuji Oshima

    Chemosphere   338   139543 - 139543   2023.10   （ ISSN:0045-6535 ）

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    Language：Others   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.chemosphere.2023.139543

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  • Differences in microplastic degradation in the atmosphere and coastal water environment from two island nations: Japan and New Zealand

    Edward G. Nagato, Hemanth Noothalapati, Chihiro Kogumasaka, Sota Kakii, Sarwar Hossain, Keita Iwasaki, Yuki Takai, Yohei Shimasaki, Masato Honda, Kazuichi Hayakawa, Tatsuyuki Yamamoto, Stephen D.J. Archer

    Environmental Pollution   333   122011   2023.9   （ ISSN:0269-7491 eISSN:1873-6424 ）

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    DOI： 10.1016/j.envpol.2023.122011

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  • Bioconcentration and Behavioral Interference Effect of Diazepam on Adult Japanese Medaka (Oryzias latipes)

    WANG Sijing, ZHUO Mengcheng, CHEN Kun, SHI Yanhong, QIU Xuchun, TAKAI Yuki, SHIMASAKI Yohei, OSHIMA Yuji

    Journal of the Faculty of Agriculture, Kyushu University   68 ( 2 )   135 - 141   2023.9   （ ISSN:00236152 ）

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    Language：English   Publisher：Faculty of Agriculture, Kyushu University  

    As one of the most commonly detected polluting drugs in the environment, diazepam (DZP) has been widely detected in rivers, soil, and organisms. To better understand the bioconcentration of DZP in fish and its impact on fish behaviors, we exposed both female and male medaka to a DZP (120 μg/L) for 7 days, and then transformed them to clean dechlorinated water for 3 days of depuration. Regardless of gender, DZP can rapidly accumulate in the brain and liver tissue and reach a stable phase within 24 hours of exposure. When the fish was transferred to purified water for purification, the concentration of DZP in the tissue was rapidly discharged, decreasing by one order of magnitude within 24 hours. The bioconcentration factors (BCF) of DZP in the brain and liver of males were calculated to be 10.47 and 19.58 L/kg, respectively, and those in females were calculated to be 6.12 and 6.03 L/kg. Compared with females, DZP accumulated more in the tissue of male fish, which exhibited a higher mortality rate during exposure. In addition, DZP can be significantly enriched in the ovaries of females, with a BCF of 10.54 L/kg. Furthermore, DZP exposure could significantly interfere with the interactive behaviors between males and females during the courtship, as indicated by the reduced duration of body contact and increased inter–individual distance. These findings highlight the need to study the transgenerational toxicity of DZP in Japanese medaka to assess its potential risk to fish populations accurately.

    DOI： 10.5109/6796256

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  • Combined effect of anthracene and polyethylene microplastics on swimming speed and cytochrome P4501A monooxygenase expression of Java medaka (<i>Oryzias javanicus</i>)

    Takai, Y; Tominaga, A; Honda, M; Qiu, XC; Shimasaki, Y; Kang, IJ; Oshima, Y

    ECOTOXICOLOGY   32 ( 7 )   948 - 957   2023.9   （ ISSN:0963-9292 eISSN:1573-3017 ）

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    Language：English   Publisher：Ecotoxicology  

    Microplastics have been detected in a variety of aquatic ecosystems, and the combined effect of microplastics and chemical pollutants has become a matter of increasing concern. We conducted a 12-d co-exposure test of anthracene and spherical or fragmented polyethylene microplastics (size 200 µm) on Java medaka (Oryzias javanicus). The accumulation of anthracene in Java medaka muscle reached a plateau on day 5 in all anthracene exposure groups, and no significant differences were detected among the groups (ANT, 20.4 ± 5.5; ANT + SPPE-MP, 24.7 ± 2.7; ANT + FRPE-MP, 24.6 ± 4.7 µg/g). However, co-exposure to anthracene and spherical or fragmented polyethylene microplastics increased the duration of slow swimming in a swimming behavior test (control, 4.1 ± 1.4; ANT, 5.2 ± 2.8; ANT + SPPE-MP, 12.4 ± 3.7; ANT + FRPE-MP, 17.4 ± 5.1 min/30 min), and co-exposure to anthracene and fragmented polyethylene microplastics induced higher cytochrome P4501A monooxygenase (CYP1A) expression in Java medaka livers than the other anthracene exposure groups (ANT, 189 ± 74; ANT + SPPE-MP, 203 ± 75; ANT + FRPE-MP 272 ± 36% of control). Polyethylene microplastics appear to be weak vectors of anthracene at the size tested (200 µm), and the effect of shape (spherical or fragmented) on the vector effect was small. However, the presence of polyethylene microplastics could affect the swimming behavior and CYP1A expression in Java medaka.

    DOI： 10.1007/s10646-023-02700-4

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  • Tributyltin-binding protein type 1 (fish acid glycoprotein) is a potential gatekeeper of ethinylestradiol action in fish

    Hibiki Hakata, Yuki Takai, Jae Man Lee, Takahiro Kusakabe, Hina Satone, Yohei Shimasaki, Yuji Oshima

    Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology   271   109660 - 109660   2023.5   （ ISSN:1532-0456 eISSN:1878-1659 ）

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    DOI： 10.1016/j.cbpc.2023.109660

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  • Relationship closeness of tolerance to two neonicotinoids with their internal body burden in two estuarine resident marine crustaceans. International journal

    Takeshi Hano, Katsutoshi Ito, Mana Ito, Kei Takashima, Yuki Takai, Yuji Oshima, Nobuyuki Ohkubo

    Comparative biochemistry and physiology. Toxicology & pharmacology : CBP   268   109613 - 109613   2023.3   （ ISSN:1532-0456 eISSN:1878-1659 ）

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    Language：English   Publishing type：Research paper (scientific journal)  

    The estuarine resident crustacean sand shrimp, Crangon uritai, has a higher tolerance to neonicotinoid insecticides than that of the kuruma prawns, Penaeus japonicus. However, the reason for the differential sensitivities between the two marine crustaceans remains to be understood. This study explored the mechanism underlying differential sensitivities based on insecticide body residues after exposing both said crustaceans to two insecticides (acetamiprid and clothianidin) with or without oxygenase inhibitor piperonyl butoxide (PBO) for 96 h. Two graded-concentration groups were formed; group H (1/15-1 times the 96-h LC50 values) and L (one-tenth the concentration of group H). Results showed that the internal concentration in survived specimens tended to be lower in sand shrimp than in kuruma prawns. Co-treatment of PBO with two neonicotinoids not only increased sand shrimp mortality in the H group, but also altered metabolism of acetamiprid into its metabolite, N-desmethyl acetamiprid. Furthermore, molting during the exposure period enhanced bioconcentration of insecticides, but not affects survival. Collectively, the higher tolerance of sand shrimp than that of kuruma prawns to the two neonicotinoids can be explained by lower bioconcentration potential and more involvement of oxygenase in their alleviating lethal toxicity.

    DOI： 10.1016/j.cbpc.2023.109613

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  • Combined effect of diazepam and polystyrene microplastics on the social behavior of medaka (Oryzias latipes)

    Yuki Takai, Hideaki Tokusumi, Moeko Sato, Daishi Inoue, Kun Chen, Takumi Takamura, Shintaro Enoki, Yu Ueno, Ik Joon Kang, Yohei Shimasaki, Xuchun Qiu, Yuji Oshima

    Chemosphere   299   134403 - 134403   2022.7   （ ISSN:0045-6535 eISSN:1879-1298 ）

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    DOI： 10.1016/j.chemosphere.2022.134403

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  • Molting enhances internal concentrations of fipronil and thereby decreases survival of two estuarine resident marine crustaceans. International journal

    Takeshi Hano, Katsutoshi Ito, Mana Ito, Kei Takashima, Rei Somiya, Yuki Takai, Yuji Oshima, Nobuyuki Ohkubo

    Aquatic toxicology (Amsterdam, Netherlands)   247   106172 - 106172   2022.6   （ ISSN:0166-445X eISSN:1879-1514 ）

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    In aquatic arthropods, molting is a pivotal physiological process for normal development, but it may also expose them to higher risks from xenobiotics, because the organism may take up additional water during that time. This study aimed to assess the effects of molting on bioconcentration and survival after 96-h exposure to insecticide fipronil with or without oxygenase (CYP450s) inhibitor piperonyl butoxide (PBO) of two estuarine resident marine crustacean species: the sand shrimp Crangon uritai and the kuruma prawn Penaeus japonicus, with 96-h LC50 value of fipronil = 2.0 µg/L and 0.2 µg/L, respectively. Two graded concentrations included group high (H) (equivalent to the 96-h LC50 values) and low (L) (one-tenth of the H group concentration). Molting and survival were individually checked, and internal concentrations of fipronil and its metabolites (fipronil desulfinyl, fipronil sulfide, fipronil sulfone) were measured. The results showed that, only fipronil and fipronil sulfone were detected from organism, and that internal concentrations of these insecticides in molted specimens were higher than those of unmolted ones but comparable with those of dead ones. Accordingly, mortality was more frequent in molted specimens than those that were unmolted. Furthermore, involvement of oxygenase and higher lethal body burden threshold may confer higher tolerance to fipronil in sand shrimp than in the kuruma prawn. This study is the first to demonstrate that the body-residue-based approach is useful for deciphering the causal factors underlying fipronil toxicity, but highlights the need to consider physiological factors in arthropods, which influence and lie beyond body burden, molting and drug metabolism.

    DOI： 10.1016/j.aquatox.2022.106172

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  • Persistent impact of amitriptyline on the behavior, brain neurotransmitter, and transcriptional profile of zebrafish (Danio rerio)

    Xuchun Qiu, Chen Chen, Yanhong Shi, Kun Chen, Ming Li, Hai Xu, Xiangyang Wu, Yuki Takai, Yohei Shimasaki, Yuji Oshima

    Aquatic Toxicology   245   106129   2022.4   （ ISSN:0166-445X eISSN:1879-1514 ）

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    DOI： 10.1016/j.aquatox.2022.106129

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  • Obesogenic and developmental effects of TBT on the gene expression of juvenile Japanese medaka (Oryzias latipes)

    Kun Chen, Naoto Iwasaki, Xuchun Qiu, Hai Xu, Yuki Takai, Kosuke Tashiro, Yohei Shimasaki, Yuji Oshima

    AQUATIC TOXICOLOGY   237   2021.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.aquatox.2021.105907

  • Uptake and depuration kinetics of microplastics with different polymer types and particle sizes in Japanese medaka (Oryzias latipes)

    Yangqing Liu, Xuchun Qiu, Xinning Xu, Yuki Takai, Hijiri Ogawa, Yohei Shimasaki, Yuji Oshima

    ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY   212   2021.4

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    DOI： 10.1016/j.ecoenv.2021.112007

  • Quantifying the vector effects of polyethylene microplastics on the accumulation of anthracene to Japanese medaka (Oryzias latipes). International journal

    Xuchun Qiu, Souvannasing Saovany, Yuki Takai, Aimi Akasaka, Yoshiyuki Inoue, Naoaki Yakata, Yangqing Liu, Mami Waseda, Yohei Shimasaki, Yuji Oshima

    Aquatic toxicology (Amsterdam, Netherlands)   228   105643 - 105643   2020.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.aquatox.2020.105643

  • Production of a tributyltin-binding protein 2 knockout mutant strain of Japanese medaka, Oryzias latipes. International journal

    Yoko Kato-Unoki, Yuki Takai, Yosuke Nagano, Satoshi Matsunaga, Shintaro Enoki, Takumi Takamura, Sangwan Kim, Masato Kinoshita, Takeshi Kitano, Yohei Shimasaki, Yuji Oshima

    Marine pollution bulletin   160   111601 - 111601   2020.11

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    DOI： 10.1016/j.marpolbul.2020.111601

  • Detoxification roles of tributyltin-binding protein type 2 in Japanese medaka (Oryzias latipes) exposed to tributyltin. International journal

    Xuchun Qiu, Takumi Takamura, Shintaro Enoki, Yoko Kato-Unoki, Yuki Takai, Yosuke Nagano, Masato Kinoshita, Takeshi Kitano, Yohei Shimasaki, Yuji Oshima

    Marine pollution bulletin   159   111445 - 111445   2020.10

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.marpolbul.2020.111445

  • Gene expression stability of candidate reference genes under different culture conditions for quantitative PCR in the raphidophyte Chattonella marina

    Koki Mukai, Yohei Shimasaki, Xuchun Qiu, Yoko Kato-Unoki, Kun Chen, Yuki Takai, Mst Ruhina Margia Khanam, Abrianna Elke Chairil, Yuji Oshima

    Phycologia   1 - 10   2020.9

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    DOI： 10.1080/00318884.2020.1816041

  • Establishment of a Japanese medaka (Oryzias latipes) transgenic line expressing Takifugu rubripes pufferfish saxitoxin and tetrodotoxin binding protein 1, and evaluation of tributyltin toxicity via in ovo nanoinjection. International journal

    Yuki Takai, Naohiro Mizoguchi, Masato Kinoshita, Xuchun Qiu, Yohei Shimasaki, Yuji Oshima

    Comparative biochemistry and physiology. Toxicology & pharmacology : CBP   234   108785 - 108785   2020.8

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    DOI： 10.1016/j.cbpc.2020.108785

  • Transcriptome analysis of medaka (Oryzias latipes) exposed to tributyltin

    Yuki Takai, Takumi Takamura, Shintaro Enoki, Moeko Sato, Yoko Kato-Unoki, Xuchun Qiu, Yohei Shimasaki, Yuji Oshima

    2020.7

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Presentations

  • 新規行動影響評価手法Peek-A-Boo Testの開発：汎用的かつ高感度なメダカの行動影響評価手法の開発を目指して Invited

    高井優生, 泉むつみ, 小松霞, 徳永美遥, 島崎洋平, 大嶋雄治

    第27回日本水環境学会シンポジウム  2024.9 

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    Event date： 2024.9

    Presentation type：Oral presentation (invited, special)  

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  • Behavioral Diversity and Sample Size Optimization in Medaka Fish Behavioral Tests

    Yuki Takai, Mutsumi Izumi, Ik-Joon Kang, Yohei Shimasaki, Yuji Oshima

    ISTA21  2024.8 

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    Event date： 2024.8

    Language：English   Presentation type：Poster presentation  

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  • Peek-A-Boo Test: Assessing the Behavioral Impact of Diazepam and Chlorpyrifos on Medaka Fish (Oryzias latipes)

    Yuki Takai, Mutsumi Izumi, Kasumi Komatsu, Miharu Tokunaga, Ik-Joon Kang, Yohei Shimasaki, Yuji Oshima

    ISTA21  2024.8 

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    Event date： 2024.8

    Language：English   Presentation type：Oral presentation (general)  

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  • 3尾？5尾？10尾？20尾？50尾？行動試験においてメダカの行動特性を反映しながら再現性のある結果を得るためには何尾の行動観察が必要？

    高井優生, 泉むつみ, 姜益俊, 島崎洋平, 大嶋雄治

    第3回環境化学物質合同大会  2024.7 

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    Event date： 2024.7

    Presentation type：Poster presentation  

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  • 動物福祉の観点から考えた生態学的な死～環境毒性学において動物実験を削減するには～

    高井優生

    第3回環境化学物質合同大会  2024.7 

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    Event date： 2024.7

    Presentation type：Symposium, workshop panel (nominated)  

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  • Peek-A-Booテストの検証：有機リン系農薬クロルピリホスがメダカの行動に与える影響

    高井優生, 小松霞, 徳永美遥, 姜益俊, 島崎洋平, 大嶋雄治

    第3回環境化学物質合同大会  2024.7 

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    Event date： 2024.7

    Presentation type：Oral presentation (general)  

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  • ジャワメダカへの多環芳香族炭化水素の蓄積にマイクロプラスチックが与える影響

    高井優生, 徳永美遥, 小松霞, 姜益俊, 島崎洋平, 大嶋雄治

    日本水産学会  2024.3 

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    Event date： 2024.3

    Presentation type：Poster presentation  

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  • The vector effect of microplastics: size and concentration effect of microplastics on the accumulation of anthracene for Java medaka

    Yuki Takai, Miharu Tokunaga, Kasumi Komatsu, Akiyo Tominaga, Yohei shimasaki, Yuji Oshima

    K-INET International Symposium 2023  2023.12 

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    Event date： 2023.12

    Language：Others  

    Country：Other  

  • The vector effect of microplastics: size and concentration effect of microplastics on the accumulation of anthracene for Java medaka

    Yuki Takai, Miharu Tokunaga, Kasumi Komatsu, Akiyo Tominaga, Yohei shimasaki, Yuji Oshima

    K-INET International Symposium 2023  2023.12 

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    Event date： 2023.12

    Presentation type：Oral presentation (general)  

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  • メダカの食欲とマイクロプラスチックの関係：なぜマイクロプラスチックによってメダカの行動が変化するのか？

    高井 優生, 小松 霞, 島崎 洋平, 大嶋 雄治

    日本環境毒性学会  2023.9 

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    Event date： 2023.9

    Language：Others  

    Country：Other  

  • メダカの食欲とマイクロプラスチックの関係：なぜマイクロプラスチックによってメダカの行動が変化するのか？

    高井 優生, 小松 霞, 島崎 洋平, 大嶋 雄治

    日本環境毒性学会  2023.9 

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    Event date： 2023.9

    Presentation type：Oral presentation (general)  

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  • Peek-A-Boo test：メダカを用いた抗不安薬・抗うつ薬の影響評価法の検討

    高井優生, 泉むつみ, 本山由里子, 島崎洋平, 大嶋雄治, 姜益俊

    環境化学物質3学会合同大会  2023.5 

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    Event date： 2023.5 - 2023.6

    Language：Others  

    Country：Other  

  • ジャワメダカ（Oryzias javanicus）のアントラセン蓄積に及ぼすマイクロプラスチックのサイズおよび濃度の影響

    高井優生, 富永晃世, 徳永美遥, 本田匡人, 島崎洋平, 大嶋雄治

    環境化学物質3学会合同大会  2023.5 

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    Event date： 2023.5 - 2023.6

    Language：Others  

    Country：Other  

  • Peek-A-Boo test：メダカを用いた抗不安薬・抗うつ薬の影響評価法の検討

    高井優生, 泉むつみ, 本山由里子, 島崎洋平, 大嶋雄治, 姜益俊

    環境化学物質3学会合同大会  2023.5 

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    Event date： 2023.5 - 2023.6

    Presentation type：Oral presentation (general)  

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  • ジャワメダカ（Oryzias javanicus）のアントラセン蓄積に及ぼすマイクロプラスチックのサイズおよび濃度の影響

    高井優生, 富永晃世, 徳永美遥, 本田匡人, 島崎洋平, 大嶋雄治

    環境化学物質3学会合同大会  2023.5 

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    Event date： 2023.5 - 2023.6

    Presentation type：Poster presentation  

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  • ポリスチレンマイクロプラスチックの水中濃度がジャワメダカのアントラセン取り込みに与える影響

    高井優生, 徳永美遥, 島崎洋平, 大嶋雄治

    日本水産学会  2023.3 

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    Event date： 2023.3

    Language：Others  

    Country：Other  

  • ポリスチレンマイクロプラスチックの水中濃度がジャワメダカのアントラセン取り込みに与える影響

    高井優生, 徳永美遥, 島崎洋平, 大嶋雄治

    日本水産学会  2023.3 

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    Event date： 2023.3

    Presentation type：Oral presentation (general)  

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  • 微細マイクロプラスチックのベクター効果：マイクロプラスチックの水中濃度がジャワメダカのアントラセン蓄積量に与える影響

    高井優生

    令和４年度海洋プラスチックごみ学術シンポジウム  2023.3 

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    Event date： 2023.3

    Language：Others  

    Country：Other  

  • 微細マイクロプラスチックのベクター効果：マイクロプラスチックの水中濃度がジャワメダカのアントラセン蓄積量に与える影響

    高井優生

    令和４年度海洋プラスチックごみ学術シンポジウム  2023.3 

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    Event date： 2023.3

    Presentation type：Oral presentation (general)  

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  • 周期的な住環境変化に対する脳内遺伝子応答の網羅解析

    黒木 海斗, 松尾 涼平, 洲崎 礼紀, 篠塚 まりな, 谷口 楓果, 高井 優生, 大嶋 雄治, 安尾 しのぶ

    日本畜産学会  2022.9 

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    Event date： 2022.9

    Language：Others  

    Country：Other  

  • 周期的な住環境変化に対する脳内遺伝子応答の網羅解析

    黒木 海斗, 松尾 涼平, 洲崎 礼紀, 篠塚 まりな, 谷口 楓果, 高井 優生, 大嶋 雄治, 安尾 しのぶ

    日本畜産学会  2022.9 

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    Event date： 2022.9

    Presentation type：Oral presentation (general)  

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  • 魚類における微細ポリスチレンマイクロプラスチックのアントラセン取込促進効果とその行動影響に関する研究 Invited

    高井優生, 徳永美遥, 富永晃世, 本田匡人, 島崎洋平, 大嶋雄治

    第25回日本水環境学会シンポジウム  2022.9 

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    Event date： 2022.9

    Language：Others  

    Country：Other  

  • Effect of Anthracene Spiked Polystyrene Microplastics on Anthracene Accumulation in Java Medaka Invited

    2022.9 

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    Event date： 2022.9

    Presentation type：Oral presentation (general)  

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  • Combined effect of diazepam and polystyrene microplastics on the social behavior of medaka (Oryzias latipes)

    Yuki Takai, Ik Joon Kang, Hideaki Tokusumi, Moeko Sato, Daishi Inoue, Kun Chen, Takumi Takamura, Shintaro Enoki, Yu Ueno, Yohei Shimasaki, Xuchun Qiu, Yuji Oshima

    ISTA 20 

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    Event date： 2022.8

    Language：Others  

    Country：Other  

  • Combined effect of diazepam and polystyrene microplastics on the social behavior of medaka (Oryzias latipes)

    Yuki Takai, Ik Joon Kang, Hideaki Tokusumi, Moeko Sato, Daishi Inoue, Kun Chen, Takumi Takamura, Shintaro Enoki, Yu Ueno, Yohei Shimasaki, Xuchun Qiu, Yuji Oshima

    ISTA 20 

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    Event date： 2022.8

    Presentation type：Poster presentation  

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  • メダカの群れ形成行動に及ぼす微細マイクロプラスチックと向精神薬ジアゼパムの複合影響

    高井優生, 徳住英彰, 井上傑士, 佐藤萌子, 姜益俊, 島崎洋平, 大嶋雄治

    日本水産学会  2022.3 

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    Event date： 2022.3

    Language：Others  

    Country：Other  

  • 微細ポリスチレンマイクロプラスチックがジャワメダカのアントラセン取込み量に与える影響

    高井優生, 内田祐紀哉, 本田匡人, 島崎洋平, 大嶋雄治

    日本水産学会  2022.3 

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    Event date： 2022.3

    Language：Others  

    Country：Other  

  • メダカの群れ形成行動に及ぼす微細マイクロプラスチックと向精神薬ジアゼパムの複合影響

    高井優生, 徳住英彰, 井上傑士, 佐藤萌子, 姜益俊, 島崎洋平, 大嶋雄治

    日本水産学会  2022.3 

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    Event date： 2022.3

    Presentation type：Oral presentation (general)  

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  • 微細ポリスチレンマイクロプラスチックがジャワメダカのアントラセン取込み量に与える影響

    高井優生, 内田祐紀哉, 本田匡人, 島崎洋平, 大嶋雄治

    日本水産学会  2022.3 

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    Event date： 2022.3

    Presentation type：Oral presentation (general)  

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  • 微細マイクロプラスチックのベクター効果：ポリスチレンマイクロプラスチックとアントラセンの複合影響

    高井優生, 内田祐紀哉, 本田匡人, 九州大院, 島崎洋平, 大嶋雄治

    水環境学会  2022.3 

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    Event date： 2022.3

    Language：Others  

    Country：Other  

  • 微細マイクロプラスチックのベクター効果：ポリスチレンマイクロプラスチックとアントラセンの複合影響

    高井優生, 内田祐紀哉, 本田匡人, 九州大院, 島崎洋平, 大嶋雄治

    水環境学会  2022.3 

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    Event date： 2022.3

    Presentation type：Oral presentation (general)  

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  • コンパートメントモデルを用いたマイクロプラスチックのベクター効果の検証：マイクロプラスチックの粒径がベクター効果に与える影響

    高井優生

    令和3年度海洋プラスチックごみ学術シンポジウム  2022.3 

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    Event date： 2022.3

    Language：Others  

    Country：Other  

  • コンパートメントモデルを用いたマイクロプラスチックのベクター効果の検証：マイクロプラスチックの粒径がベクター効果に与える影響

    高井優生

    令和3年度海洋プラスチックごみ学術シンポジウム  2022.3 

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    Event date： 2022.3

    Presentation type：Public lecture, seminar, tutorial, course, or other speech  

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  • The Vector Effect of Fine Microplastics (2): Estimation of the Vector Effect on Anthracene in Java medaka

    Yuki Takai, Masato Honda, Abrianna Elke Chairil, Yohei Shimasaki, Yuji Oshima

    Plastic pollution in Asian waters  2022.3 

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    Event date： 2022.3

    Language：Others  

    Country：Other  

  • The Vector Effect of Fine Microplastics: Combined Effect of Polystyrene Microplastics and Anthracene on Java medaka

    Yuki Takai, Yukiya Uchida, Masato Honda, Yohei Shimasaki, Yuji Oshima

    Plastic pollution in Asian waters  2022.3 

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    Event date： 2022.3

    Language：Others  

    Country：Other  

  • The Vector Effect of Fine Microplastics (2): Estimation of the Vector Effect on Anthracene in Java medaka

    Yuki Takai, Masato Honda, Abrianna Elke Chairil, Yohei Shimasaki, Yuji Oshima

    Plastic pollution in Asian waters  2022.3 

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    Event date： 2022.3

    Presentation type：Poster presentation  

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  • The Vector Effect of Fine Microplastics: Combined Effect of Polystyrene Microplastics and Anthracene on Java medaka

    Yuki Takai, Yukiya Uchida, Masato Honda, Yohei Shimasaki, Yuji Oshima

    Plastic pollution in Asian waters  2022.3 

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    Event date： 2022.3

    Presentation type：Poster presentation  

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  • 微細マイクロプラスチックと向精神薬ジアゼパムの同時曝露がメダカの群れ形成行動に与える影響

    高井優生, 徳住英彰, 井上傑士, 佐藤萌子, 姜益俊, 島崎洋平, 大嶋雄治

    環境化学会九州支部会  2022.3 

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    Event date： 2022.3

    Language：Others  

    Country：Other  

  • 微細マイクロプラスチックと向精神薬ジアゼパムの同時曝露がメダカの群れ形成行動に与える影響

    高井優生, 徳住英彰, 井上傑士, 佐藤萌子, 姜益俊, 島崎洋平, 大嶋雄治

    環境化学会九州支部会  2022.3 

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    Event date： 2022.3

    Presentation type：Oral presentation (general)  

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  • Combined Effect of Polystyrene Microplastics and Diazepam on Fish Social Behavior

    Yuki Takai, Hideaki Tokusumi, Moeko Sato, Daishi Inoue, Kun Chen, Ik Joon Kang, Yohei Shimasaki, Xuchun Qiu, Yuji Oshima

    SETAC North America 42nd Annual Meeting 

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    Event date： 2021.11

    Language：Others  

    Country：Other  

  • 微小マイクロプラスチックと向精神薬ジアゼパムの同時曝露がメダカの群れ形成行動に及ぼす影響

    高井優生, 徳住英彰, 井上傑士, 佐藤萌子, 姜益俊, 島崎洋平, 大嶋雄治

    環境毒性学会  2021.8 

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    Event date： 2021.8

    Language：Others  

    Country：Other  

  • 魚類リポカリンタンパク質 TBT-bp2 破壊メダカにおける白点虫感染機構の解析

    高井優生, 助田将樹, 高村匠, 長野陽介, 島崎洋平, 杣本智軌, 大嶋雄治

    日本水産学会  2021.3 

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    Event date： 2021.3

    Language：Others  

    Country：Other  

  • マイクロプラスチックとアントラセンの複合暴露が海産メダカへ与える影響

    高井優生, 富永晃世, 早稲田真未, 内田祐紀哉, 本田匡人, 島崎洋平, 大嶋雄治

    環境毒性学会  2021.3 

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    Event date： 2021.3

    Language：Others  

    Country：Other  

  • 野生型および魚類リポカリンタンパク質 TBT-bp2 遺伝子破壊メダカを用いた白点虫感染実験

    高井優生, 助田将樹, 高村匠, 長野陽介, 島崎洋平, 杣本智軌, 大嶋雄治

    日本水産学会  2020.3 

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    Event date： 2020.3

    Language：Others  

    Country：Other  

  • トラフグにおけるフグ毒結合タンパク質のノックアウト

    高井優生, 鵜木(加藤)陽子, 望月利孝, 木下滋晴, 木下政人, 島崎洋平, 大嶋雄治

    日本水産学会  2015.9 

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    Event date： 2015.9

    Language：Others  

    Country：Other  

  • 哺乳期の日長によるマウスの増体促進メカニズムおよびウシ骨格筋のエピジェネティック制御

    松尾 涼平, 黒木 海斗, 丸山 創平, Yang Dan, Tran Phuong, 高井 優生, 大嶋 雄治, 後藤 貴文, 安尾 しのぶ

    日本畜産学会大会講演要旨集  2022.9  (公社)日本畜産学会

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    Language：Japanese  

  • 周期的な住環境変化に対する脳内遺伝子応答の網羅解析

    黒木 海斗, 松尾 涼平, 洲崎 礼紀, 篠塚 まりな, 谷口 楓果, 高井 優生, 大嶋 雄治, 安尾 しのぶ

    日本畜産学会大会講演要旨集  2022.9  (公社)日本畜産学会

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    Language：Japanese  

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MISC

  • Recent Progress in the Study of Peroxiredoxin in the Harmful Algal Bloom Species Chattonella marina

    Yohei Shimasaki, Koki Mukai, Yuki Takai, Xuchun Qiu, Yuji Oshima

    ANTIOXIDANTS   2021.2

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    Language：English  

    DOI： 10.3390/antiox10020162

Professional Memberships

  • SETAC Australasia

  • Japan Society on Water Environment

  • The Japanese Society of Environmental Toxicology

  • The Japanese Society of Environmental Toxicology

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  • Japan Society on Water Environment

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  • SETAC Australasia

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Academic Activities

  • Screening of academic papers

    Role(s)： Peer review

    2023

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    Type：Peer review 

    Number of peer-reviewed articles in foreign language journals：4

Research Projects

  • Exploring the Relationship between Pharmaceutical-Induced Behavioral Effects and Ecological Risks through the Behavioral Characteristics of Medaka Fish

    Grant number：24K20939  2024.4 - 2027.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Early-Career Scientists

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    Grant type：Scientific research funding

    CiNii Research

  • メダカの行動特性から探る「医薬品による行動影響と生態リスクの関係」

    2024.4 - 2026.3

    日本学術振興会（若手研究）（日本） 

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    Authorship：Principal investigator 

  • フタル酸エステル類に着目したマイクロプラスチック汚染の評価～フナムシの糞で環境モニタリング？～

    2024.4 - 2025.2

    日本科学協会 笹川科学研究助成（日本） 

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    Authorship：Principal investigator 

  • メダカの行動特性から探る「医薬品による行動影響と生態リスクの関係」

    2024 - 2026

    日本学術振興会  科学研究費助成事業  若手研究

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    Authorship：Principal investigator  Grant type：Scientific research funding

  • フタル酸エステル類に着目したマイクロプラスチック汚染の評価～フナムシの糞で環境モニタリング？～

    Grant number：2024-6010  2024

    科学研究費助成事業  厚生労働科学研究費補助金 (厚生労働省)

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    Authorship：Principal investigator  Grant type：Competitive funding other than Grants-in-Aid for Scientific Research

  • ナノプラスチックのベクター効果：生態影響評価に向けた数理モデルの構築

    Grant number：22KJ2453  2023.3 - 2024.3

    科学研究費助成事業  特別研究員奨励費

    高井 優生

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    Grant type：Scientific research funding

    現在、水環境ではマイクロプラスチック（粒径5 mm以下のプラスチック粒子、MP）およびナノプラスチック（粒径1 um以下のプラスチック粒子、NP）による生物影響が懸念されている。これまでの知見により、MPが化学物資の生物体内への取り込みを加速させること、いわゆるベクター効果を有することが報告されている。さらに、微細MPは魚類の消化管やえらから体内に容易に取り込まれ、また、一度体内に取り込まれた微細MPは長期にわたって魚体内に残留する可能性が見出されている。本研究では、魚類における微細MPのベクター効果を定量的に評価することを目的とする。

    CiNii Research

  • 魚介類養殖における気候変動に左右されない強力な赤潮対応技術の開発

    2022.4 - 2026.3

    農林水産省（日本） 

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    Authorship：Coinvestigator(s) 

  • ナノプラスチックのベクター効果：生態影響評価に向けた数理モデルの構築

    Grant number：22J13703  2022 - 2023

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

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    Grant type：Scientific research funding

  • 海産魚類におけるエンドサイトーシスはマイクロプラスチックのベクター効果を増強するか？

    Grant number：2021-6026  2021

    科学研究費助成事業  笹川科学研究助成（日本科学協会）

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    Authorship：Principal investigator  Grant type：Competitive funding other than Grants-in-Aid for Scientific Research

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Class subject

  • 水産生物環境学 II

    2024.6 - 2024.8   Summer quarter

  • 水産生物環境学 I

    2024.4 - 2024.6   Spring quarter

  • Environmental and Ecological Science for Animal Production II

    2024.4 - 2024.6   Spring quarter

  • 水産科学のフロンティア

    2024.4 - 2024.6   Spring quarter

  • 水産生物環境学Ⅱ

    2024.6 - 2024.8   Summer quarter

  • 水産生物環境学Ⅰ

    2024.4 - 2024.6   Spring quarter

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FD Participation

  • 2024.4   Role：Participation   Title：【全学FD】自殺防止メンタルヘルス研修会

    Organizer：University-wide

  • 2024.4   Role：Participation   Title：令和６年度 第１回全学FD（新任教員の研修）The 1st All-University FD (training for new faculty members) in FY2024

    Organizer：University-wide

  • 2023.11   Role：Participation   Title：農学研究院FD：遺伝子組換え実験の安全管理について

    Organizer：[Undergraduate school/graduate school/graduate faculty]