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Affiliation |
Faculty of Agriculture Region of Animal and Plant Biosciences |
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Title |
Assistant Professor |
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Laboratory Phone number |
0985-58-7197 |
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Contact information |
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Related SDGs |
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UKYO Rina
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Degree 【 display / non-display 】
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博士（農学） ( 2023.9 宮崎大学 )
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修士（農学） ( 2020.3 宮崎大学 )
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学士（農学） ( 2018.3 宮崎大学 )
Research Interests 【 display / non-display 】
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Octodon degus
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分娩関連行動
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実験動物
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ラット
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コミュニケーション
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パーソナリティ
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Social separation
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Early-life stress
Research Areas 【 display / non-display 】
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Life Science / Laboratory animal science
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Humanities & Social Sciences / Experimental psychology
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Life Science / Animal physiological chemistry, physiology and behavioral biology
Education 【 display / non-display 】
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University of Miyazaki Interdisciplinary Graduate school of Agriculture and Engineering
2020.4 - 2023.9
Country：Japan
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University of Miyazaki Graduate School of Agriculture, Masters Coarse
2018.4 - 2020.3
Country：Japan
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University of Miyazaki
2014.4 - 2018.3
Country：Japan
Papers 【 display / non-display 】
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Rina Ukyo, Akio Shinohara, Chihiro Koshimoto, Goro A. Nagura-Kato, Seiji Ieiri, Yasuhiro Tsuzuki, Shinsuke H. Sakamoto
Scientific Reports 13 ( 1 ) 9518 2023.6
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
File： Ukyo2023Long-term.pdf
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Early lactation milk yield as an indicator of days open in Japanese Black cows Reviewed
Koichiro HEMMI, Miu NAKATAKE, Rina UKYO, Yasuhiro TSUZUKI, Ikuo KOBAYASHI
Journal of Warm Regional Society of Animal Science, Japan 69 ( 2 ) 2026.9
Language：English Publishing type：Research paper (scientific journal)
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Effect of dam and calf size on neutrophil population in the uterine lumen of Japanese black cattle Reviewed
69 ( 1 ) 2026.3
Language：English Publishing type：Research paper (scientific journal)
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Tone M., Ukyo R., Sakamoto S.H., Hemmi K., Kobayashi I., Tsuzuki Y.
Cryo-Letters 44 ( 5 ) 307 - 313 2023.9
Publishing type：Research paper (scientific journal) Publisher：Cryo-Letters
BACKGROUND: Cryopreservation of porcine oocytes is difficult compared with other species and immature oocytes particularly so compared to the meiotic stage. OBJECTIVE: To evaluate the efficacy of a pretreatment with 1 μM paclitaxel (PTX, 30 min exposure) before vitrification to promote the maturation of porcine immature oocytes. MATERIALS AND METHODS: Cumulus cell-enclosed oocytes (COs) aspirated from porcine ovaries were divided into three groups: i) non-pretreated with PTX and non-vitrified group (control group); ii) pretreated with PTX and vitrified group (PTX-V group); and iii) non-pretreated with PTX and vitrified group (nPTX-V group). RESULTS: The nuclear maturation rate up to the preovulatory stage was significantly lower (P<0.05) in the nPTX-V group than in the control group, but was similar in the PTX-V and control groups. No significant differences were observed in viability assessed by a normal CO morphology and the embryonic development of oocytes activated by the parthenogenetic stimulation between the PTX-V and control groups, but not the non-PTX-V group. CONCLUSION: PTX may promote the maturation of vitrified porcine immature oocytes.
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Kuroyanagi A., Ukyo R., Kodama Y., Eto T., Okubo Y., Kobayashi I., Ieiri S., Morita T., Sakamoto S.H.
Mammal Study 47 ( 3 ) 2022.7
Authorship：Lead author Publishing type：Research paper (scientific journal) Publisher：Mammal Study
This study illustrated body temperature (Tb) fluctuation during reproduction and discussed the effectiveness of measuring Tb for predicting the reproductive profile of female Apodemus speciosus both under laboratory and field conditions. Tb fluctuation was monitored for four breeding events in the laboratory and for three in the field. Individual variation in Tb fluctuation during reproduction was larger in the field than in the laboratory, while its temporal pattern was clearer in the field than in the laboratory. Tb fluctuating patterns according to the progress of the reproductive stage were similar between the laboratory and the field. Daily mean Tb increased after the start of pregnancy, decreased during late pregnancy, rapidly increased after parturition, and remained higher through the lactation period. In particular, the following three characteristics should be apparent indices of parturition: increase of daily mean Tb and daily minimum Tb in early pregnancy, decrease of daily max Tb and daily mean Tb in late pregnancy, and increase of daily max Tb at the day of parturition. These results indicate that implanting small-sized loggers enables us to obtain a representative pattern of Tb fluctuation and to predict the reproductive profile of female A. speciosus, both under laboratory and field conditions.
DOI： 10.3106/ms2021-0048
Presentations 【 display / non-display 】
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ブタ卵母細胞の体外成熟に及ぼすフルオキセチンの影響
渡邉媛圭・右京里那・邉見広一郎・續木靖浩
第18回 日本暖地畜産学会佐賀大会 2025.10.25
Event date： 2025.10.25 - 2025.10.26
Language：Japanese Presentation type：Oral presentation (general)
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行動・姿勢指標を用いた豚の分娩検知精度の検討
石井彩夏、江川紗智子、徳永忠昭、坂本信介、右京里那、橋本果林、宮野大輝、杉浦陽介、平山祐理
第121回日本養豚学会大会
Event date： 2024.10.31 - 2024.11.1
Presentation type：Oral presentation (general)
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低コストなTDIR方式の赤外線センサでアカネズミと実験用マウスの体温変動を推定する
坂本信介，右京里那，宮内 輝，西牟田 勇哉，長谷川 美鳳，高木 和也，杵鞭 健太，奥田 悟崇，徳永 忠昭，小林郁雄
日本哺乳類学会2024年度大会 2024.9.7
Event date： 2024.9.6 - 2024.9.9
Language：Japanese Presentation type：Oral presentation (general)
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マウスの体温モニタリングにてTDIRは十分な精度と低コストを実現する
宮内輝, 右京里那，西牟田勇哉, 長谷川美鳳 , 高木和也, 杵鞭健太, 奥田悟崇, 坂本信介
第71回日本実験動物学会総会 2024.5.29
Event date： 2024.5.29 - 2024.5.31
Language：Japanese Presentation type：Oral presentation (general)
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生後早期の社会的隔離はデグー Octodon degusの行動傾向の個体差と雌雄差を減少させる
右京里那, 篠原明男, 越本知大, 名倉悟郎, 家入誠二, 續木靖浩, 坂本信介
日本動物行動学会第42回大会（京都大学） 2023.11.4
Event date： 2023.11.3 - 2023.11.5
Language：Japanese Presentation type：Poster presentation
Grant-in-Aid for Scientific Research 【 display / non-display 】
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同腹子との同居はストレスか?デグーを用いた生後早期の社会的隔離の間接的影響の検証
Grant number：25K17210 2025.04 - 2029.03
独立行政法人日本学術振興会 科学研究費基金 若手研究
Authorship：Principal investigator
