Researcher basic information

• Doctor of Philosophy in the field of Biosphere Science, Hokkaido University, Mar. 2023

• https://researchmap.jp/zhuyanhui920817?lang=en

• https://jglobal.jst.go.jp/detail?JGLOBAL_ID=202301012052199758
• https://orcid.org/0000-0003-3570-0253

• 90994517

• https://orcid.org/0000-0003-3570-0253

• 202301012052199758

Research activity information

• Mar. 2020, 北海道大学環境科学院, 修士論文発表会成績優秀賞
• Oct. 2018, North Pacific Marine Science Organization (PICES-2017), Best presentation award
• Nov. 2017, The Eleventh Annual Meeting of Asian Fisheries Acoustics Society, Best presentation award

• Warm season escape to deep: A discovery of habitat range and seasonal movement of sand tiger shark Carcharias taurus in Ogasawara Archipelago, Japan
  Akane Nagahara; Yanhui Zhu; Masayuki Nakamura; Lisa A. Hoopes; Kazuhiro Nakaya; Ippei Suzuki; Nobuhiko Sato; Mitsuki Kuroda; Yuta Sakuragi; Kenji Minami; Kazushi Miyashita
  Endangered Species Research, 02 Oct. 2025
  Scientific journal
• Temporal changes in behavior during the group spawning event of Pacific herring (Clupea pallasii)
  Kyosuke Seki; Makoto Tomiyasu; Mitsuki Kuroda; Masaki Ichimura; Nobuhiko Sato; Yanhui Zhu; Kenji Minami; Kazushi Miyashita
  Scientific Reports, 15, 1, Springer Science and Business Media LLC, 02 Apr. 2025
  Scientific journal
• Assessing cyanobacterial spatial distribution in reservoirs using acoustic survey techniques for enhanced water quality management
  Taisei Sugawara; Kenji Minami; Sangyeob Kim; Takashi Inagawa; Jiro Okitsu; Shougo Sakamoto; Tomonori Osugi; Nobuyuki Azuma; Yanhui Zhu; Kazushi Miyashita
  Current Research in Microbial Sciences, 9, 100477, 100477, Elsevier BV, 2025
  Scientific journal
• Improving Hokkai Shrimp Tracking Accuracy in Eelgrass Ecosystems Using YOLOv8 with Reflection and Parallax Correction
  Natsuo Okada; Serina Kubo; Yanhui Zhu; Kaito Takizawa; Shion Wakae; Amane Nakamura; Sakura Igawa; Yoko Ohtomo; Kenji Minami; Kazushi Miyashita; Youhei Kawamura
  Springer Science and Business Media LLC, 12 Dec. 2024
  Abstract

  Eelgrass ecosystems provide essential habitats for species, such as the Hokkai shrimp (Pandalus latirostris), supporting biodiversity and sustainable fisheries. Understanding shrimp behavior in these environments is vital for conservation efforts, yet accurately tracking shrimp movement in controlled tank settings is challenging because of surface reflections and parallax distortions. This study introduces a novel, noninvasive You Only Look Once (YOLO) tracking system that uniquely addresses these issues by integrating proximity-based filtering to remove reflection artifacts and horizontal barrel transformations to correct parallax distortions. Through controlled tank experiments, the system accurately quantified shrimp movements and captured metrics such as distance, velocity, and angle to assess behavioral responses to acoustic telemetry pingers. The results showed a high detection accuracy, with success rates of 95.65% and 100% from the front and side views, respectively, ensuring reliable data on shrimp movement and pinger impact. These findings lay the groundwork for field applications, advancing methods for ecosystem service quantification, and supporting sustainable fishery management and biodiversity conservation in eelgrass ecosystems.

• Calibration of commercial fisheries echo sounders using seabed backscatter for the estimation of fishery resources
  Yanhui Zhu; Minami Kenji; Tsutomu Tokeshi; Yoshihiro Nishiyama; Akinori Kasai; Mitsuhiro Matsuura; Hikari Horie; Kazushi Miyashita
  PLOS ONE, 10 May 2024
  Scientific journal
• Spatial and economic quantification of provisioning service by eelgrass beds in Lake Notoro, Hokkaido, Japan
  Keizo Ito; Shiori Sonoki; Kenji Minami; Susumu Chiba; Hokuto Shirakawa; Toshifumi Kawajiri; Yanhui Zhu; Kazushi Miyashita
  Scientific Reports, 14, 1, Springer Science and Business Media LLC, 14 Feb. 2024, [Peer-reviewed]
  English, Scientific journal, Abstract
  
  Eelgrass beds provide a habitat for many high-value fishery resources, and provisioning services, one of the ecosystem services, need to be quantified. However, few examples have been evaluated spatially. We determined the distribution of eelgrass beds in Lake Notoro, a marine lagoon in Hokkaido, Japan, and quantified the provisioning services by the eelgrass beds in relation to Pandalus latirostris, a fishery resource. Acoustic measurement surveys of the eelgrass beds and catch surveys of the shrimp were conducted in July and August 2015. The relationship between catch per unit effort (CPUE) of shrimp and the distribution of eelgrass beds was shown. The estimated distribution area of eelgrass beds was 7.07 km². Shrimp was frequently caught at water depths of 3–5 m, approximately 200 m from the edge of the eelgrass beds. The expected catch of shrimp in the fishing area of Lake Notoro in 2015 was 25.37 tons and US$ 463.6 thousand. Eelgrass beds were found to affect the fisheries production not only on the inside but also at the edge and outside. The entire coastal space should be evaluated, while considering the effect of the distribution of eelgrass beds, to quantify the provisioning services.
• Practical target strength of free-swimming chub mackerel Scomber japonicus
  Yanhui Zhu; Keizo Ito; Kosuke Mizutani; Kenji Minami; Hokuto Shirakawa; Yohei Kawauchi; Yuka Iwahara; Kimiharu Nahata; Nobuhiko Sato; Kyosuke Seki; Mitsuki Kuroda; Kazushi Miyashita
  Fisheries Science, Jan. 2024
  Scientific journal
• Impact of Multiple Water Temperature Structures on the Behavioral Pattern of Chum Salmon (<em>Oncorhynchus keta</em>) on the Coast of the Shiretoko Peninsula
  Xinyi Li; Hiroshi Yamaguchi; Hokuto Shirakawa; Kenji Minami; Nobuhiko Sato; Yanhui Zhu; Yasuyuki Miyakoshi; Kazushi Miyashita
  Journal of Marine Science and Technology, 31, 4, 515, 528, National Taiwan Ocean University, 01 Jan. 2023, [Peer-reviewed]
  English, Scientific journal
• Target Strength Measurements of Free-Swimming Sandeel Species, Ammodytes spp., in a Large Indoor Experimental Aquarium
  Yanhui Zhu; Kosuke Mizutani; Kenji Minami; Hokuto Shirakawa; Yohei Kawauchi; Huamei Shao; Makoto Tomiyasu; Yuka Iwahara; Tsutomu Tamura; Masahiro Ogawa; Kai Tatsuyama; Kazushi Miyashita
  Journal of Marine Science and Engineering, 14 Jul. 2022
  Scientific journal
• 成層化したダム湖におけるウグイ (Pseudaspius hakonensis) の 生息場と環境要因との関係の解明
  Yanhui Zhu
  Laguna, 22 Jun. 2022
  Scientific journal
• 福島県さくら湖における計量魚群探知機を用いた 藍藻類の音響計測の試み
  Yanhui Zhu
  Laguna, 31 Mar. 2022
  Scientific journal
• Estimating target strength of young chum salmon (Oncorhynchus keta)
  Kenji Minami; Hokuto Shirakawa; Yohei Kawauchi; Huamei Shao; Makoto Tomiyasu; Yuka Iwahara; Yuichi Tsuda; Hideo Takahara; Yanhui Zhu; Kazushi Miyashita
  Canadian Journal of Fisheries and Aquatic Sciences, 79, 2, 195, 199, Canadian Science Publishing, Feb. 2022
  English, Scientific journal, Although chum salmon (Oncorhynchus keta) is an important fishery resource in Japan, acoustic methods cannot be applied to biomass estimation because the target strength (TS) is unknown. This study clarified the TS for each fork length (FL: 5.5–33.5 cm) of young chum salmon inhabiting the Japanese coastal area to the Bering Sea by measuring free-swimming fish. The size dependences of the TS values were TSmean = 20 log10 FL – 68.0, for both 38 and 120 kHz. This facilitated the estimation of biomass of young salmon using acoustic methods.
• Seasonal variation in fish school spatial distribution and abundance under the Kuroshio regular pattern and the large meander in Suzu coastal waters
  Yanhui Zhu; Kenji Minami; Yuka Iwahara; Kentaro Oda; Koichi Hidaka; Osamu Hoson; Koji Morishita; Masahito Hirota; Sentaro Tsuru; Hokuto Shirakawa; Kazushi Miyashita
  PLOS ONE, 16, 11, Public Library of Science ({PLoS}), 30 Nov. 2021
  English, Scientific journal, The Kuroshio Current can take two paths; usually it follows the regular pattern but occasionally it follows a pattern known as the large meander. In this study, we investigated the abundance of fish that migrate to coastal waters and the spatial distribution of fish schools under both Kuroshio patterns in Suzu district, Kochi prefecture, where the set net is the main fishery industry. We clarified the seasonal variation in the density and distribution of fish schools using a quantitative echo sounder. The effects of the Kuroshio large meander (LM) depended on the season. There was no effect of current pattern in summer or autumn, but in winter and spring the LM altered the marine environment and fish distributions. Cold water masses were formed in the survey area during winter and spring during the LM, and the water temperature dropped significantly compared with during the Kuroshio non-large meander (NLM). This altered the fish species and the distribution of fish schools in the survey area. The catches of Japanese horse mackerels (Trachurus japonicus) and Yellowtails (Seriola quinqueradiata) were much higher during the LM compared with those during the NLM. Unlike these two species, the small-sized pelagic fishes in spring has decreased significantly during the LM.
• Development of a Biomass Assessment Method Using Fisheries Echo Sounder for Monitoring Whitebait Fishery in Shizuoka Prefecture, Japan
  Kenichi Kobayashi; Yanhui Zhu; Daichi Oshiyama; Kenji Minami; Hokuto Shirakawa; Kazushi Miyashita
  Journal of Marine Science and Technology, 29, 2, National Taiwan Ocean University, 22 May 2021
  English, Scientific journal
• Seasonal dynamics in fish distribution and abundance revealed by an acoustic survey in coastal waters of the Suzu Area, Kochi Prefecture, Japan
  Yanhui Zhu; Kenji Minami; Yuka Iwahara; Kentaro Oda; Koichi Hidaka; Osamu Hoson; Koji Morishita; Sentaro Tsuru; Masahito Hirota; Hokuto Shirakawa; Kazushi Miyashita
  Journal of Marine Science and Technology, 29, 2, National Taiwan Ocean University, 22 May 2021
  English, Scientific journal

• 令和2年度海洋水産資源開発事業報告(速報)(定置網:佐賀県玄海地区)
  北野載; 横田耕介; 日高浩一; 山崎恵市; 岩原由佳; 森下浩司; 彦坂明孝; 佐藤晴朗; 浅見裕司; 廣田将仁; 朱妍卉; 名畑公晴; 龍山海; 長岡祥平; 中森陸; 水谷行佑; 宮下和士, 開発ニュース, 2022
• PICES-2020 VW9 Workshop — Building a PICES Early Career Ocean Professional (ECOP) Network
  Roman, R.K; Satterthwaitte, E; Davis, A; Sugimoto, A; Sugino, H; Wang, P; Goelz, T; Zhu, Y, PICES press, 29, 1, Dec. 2021
  English
• 平成29年度海洋水産資源開発事業報告書 (定置網＜高知県鈴地区＞) 平成30年度
  日高浩一; 小田憲太朗; 森下浩司; 岩原由佳; 黒坂浩平; 廣田将仁; 日高清隆; 瀬藤聡; 福原一晃; 濱田美和子; 青野怜史; 猪原亮; 林芳弘; 工藤史貴; 山本順; 朱妍卉; 南憲吏; 宮下和士, 海洋水産資源開発事業報告書 (海洋水産資源開発事業実行可能性調査報告書), 2021
• 設置型汎用魚群探知機による沿岸資源モニタリングの可能性について
  岩原由佳; 南憲吏; 朱妍卉; 北川貴子; 日高浩一; 小田憲太朗; 保尊脩; 森下浩司; 鶴専太郎; 黒坂浩平; 廣田将仁; 宮下和士, 日本水産学会大会講演要旨集, 2020, 2020
• 平成29年度海洋水産資源開発事業報告書 (定置網＜高知県鈴地区＞) 平成29年度
  日高浩一; 小田憲太朗; 森下浩司; 岩原由佳; 黒坂浩平; 廣田将仁; 日高清隆; 瀬藤聡; 福原一晃; 濱田美和子; 青野怜史; 猪原亮; 林芳弘; 工藤史貴; 山本順; 朱妍卉; 南憲吏; 宮下和士, 海洋水産資源開発事業報告書 (海洋水産資源開発事業実行可能性調査報告書), 2020
• 定置網漁業における収益改善方法の検討-II 定置網の沖出しの効果検証
  岩原由佳; 日高浩一; 小田憲太朗; 森下浩司; 保尊脩; 南憲吏; 朱妍卉; 邵花梅; 北川貴子; 宮下和士; 黒坂浩平; 廣田将仁, 日本水産学会大会講演要旨集, 2019, 2019
• 平成29年度海洋水産資源開発事業 (定置網) 報告 (速報)
  日高浩一; 小田憲太朗; 森下浩司; 岩原由佳; 黒坂浩平; 廣田将仁; 日高清隆; 瀬藤聡; 福原一晃; 濱田美和子; 青野怜史; 猪原亮; 林芳弘; 工藤史貴; 山本順; 朱妍卉; 南憲吏; 宮下和士, 開発ニュース, 467, 2018

• Ten-year changes in the distribution of eelgrass beds in Lake Notoro using quantitative echo sounder
  Keizo ITO; Shiori SONOKI; Kenji MINAMI; Yanhui ZHU; Susumu CHIBA; Hiroyuki MATSUMOTO; Kazushi MIYASHITA
  The 38th International Symposium on the Okhotsk Sea & Polar Oceans, English, Oral presentation
  18 Feb. 2024 - 21 Feb. 2024
• Investigation of seasonal variation in the spatial distribution of cyanobacteria in Onuma, Japan
  Tomoyuki Oba; Yanhui Zhu; Nobuhiko Sato; Kouhei Yoshida; Sheng Hao; Kenji Minami; Kazushi Miyashita
  The Sixteenth Annual Meeting of Asian Fisheries Acoustics Society, English, Oral presentation
  13 Nov. 2023 - 16 Nov. 2023
• An Attempt to Estimate the Distribution Area of Cyanobacteria in a Dam Lake Using Acoustic Measurements
  Taisei Sugawara; Kenji Minami; Sangyeob Kim; Jiro Okitsu; Shougo Sakamoto; Takashi Inagawa; Tomonori Osugi; Nobuyuki Azuma; Yanhui Zhu; Kazushi Miyashita
  The Sixteenth Annual Meeting of Asian Fisheries Acoustics Society, English, Oral presentation
  13 Nov. 2023 - 16 Nov. 2023
• Calibration of Commercial Fisheries Echo Sounders for the Estimation and Management of Fishery Resources
  Yanhui Zhu; Kenji Minami; Yoshihiro Nishiyama; Akinori Kasai; Tsutomu Tokeshi; Mitsuhiro Matsuura; Hikari Horie; Kazushi Miyashita
  The Sixteenth Annual Meeting of Asian Fisheries Acoustics Society, English, Oral presentation
  13 Nov. 2023 - 16 Nov. 2023
• Estimation of length curves of juvenile red sea bream using a high-resolution single-beam fish finder
  Kazuki SEKI; Mahito MIZUKOSHI; Kenji MINAMI; Ikuo MATSUO; Keizo ITO; Yanhui ZHU; Kazushi MIYASHITA
  The 15th Annual Meeting of Asian Fisheries Acoustics Society, English, Oral presentation
  14 Nov. 2022 - 16 Nov. 2022
• Calibration of Multiple Fishing Vessels by Using Secondary Reflection from Sea Bottom
  Yanhui Zhu; Kenji Minami; Yoshihiro Nishiyama; Akinori Kasai; Tsutomu Tokeshi; Mitsuhiro Matsuura; Kazushi Miyashita
  PICES-2022 Annual Meeting, English, Oral presentation
  23 Sep. 2022 - 02 Oct. 2022
• ダム湖における魚類行動の可視化
  長岡祥平; 南憲吏; 稲川崇史; 坂本正吾; 沖津二朗; 白川北斗; 大杉奉功; 東信行; 黒田充樹; 上田健太; 中森陸; 朱妍卉; 佐藤信彦; 宮下和士
  応用生態工学会, Japanese, Oral presentation
  20 Sep. 2022 - 23 Sep. 2022
• Relation between Vertical Distribution of Pseudaspius hakonensis and Environmental Factors in Stratified Dam Reservoir
  Shohei NAGAOKA1YS; Mitsuki KURODA; Kenji MINAMI; Jiro OKITSU; Hokuto; SHIRAKAWA; Tomonori OSUGI; Nobuyuki AZUMA; Kenta UEDA; Yanhui ZHU; Riku; NAKAMORI; Nobuhiko SATO; Kazushi MIYASHITA
  The Fourteenth Annual Meeting of Asian Fisheries Acoustics Society AFAS2021, English, Oral presentation
  01 Nov. 2021 - 02 Nov. 2021
• Acoustic measurement of the cyanobacterium Microcystis aeruginosa using a quantitative echo sounder
  Riku NAKAMORI; Kenji MINAMI; Hokuto SHIRAKAWA; Yanhui ZHU; Jiro OKITSU; Tomonori OSUGI; Nobuyuki AZUMA; Sangyeob KIM; Mitsuki KURODA; Shohei NAGAOKA; Nobuhiko SATO; Kazushi MIYASHITA
  The Fourteenth Annual Meeting of Asian Fisheries Acoustics Society AFAS2021, English, Oral presentation
  01 Nov. 2021 - 02 Nov. 2021
• スマート水産に関する事例の紹介_宮崎日向灘沿岸
  朱妍卉
  第6回沿岸生態系の評価・予測に関するワークショップ, 16 Dec. 2020, Japanese, Oral presentation
• 音響調査による高知県黒潮町 鈴地区沿岸域の魚群分布と海洋環境
  朱妍卉
  第5回沿岸生態系の評価・予測に関するワークショップ, 03 Dec. 2019, Japanese, Oral presentation
• Assessment of fishery resources around Set-net using acoustic methods for sustainable fishery
  Yanhui Zhu; Kenji Minami; Yuka Iwahara; Kentaro Oda; Koichi Hidaka; Osamu Hoson; Kouji Morishita; Sentaro Tsuru; Masahito Hirota; Kazushi Miyashita
  PICES-2019 Annual Meeting, Oral presentation
  16 Oct. 2019 - 27 Oct. 2019
• 定置網漁業における収益改善方法の検討-Ⅱ定置網の沖出しの効果検証
  岩原由佳; 日高浩一; 小田憲太朗; 森下浩司; 保尊脩; 南憲吏; 朱妍卉; 邵花梅; 北川貴子; 宮下和士; 黒坂浩平; 廣田将仁
  水産学会, 12 Mar. 2019, Poster presentation
• Characterization of the fish distribution around Set-net by means of quantitative echo sounder and moored echo sounder
  Yanhui Zhu; Yuka Iwahara; Kenji Minami; Kentaro Oda; Koichi Hidaka; Osamu Hoson; Kouji Morishita; Sentaro Tsuru; Masahito Hirota; Hokuto Shirakawa; Kazushi Miyashita
  The Twelfth Annual Meeting of Asian Fisheries Acoustics Society
  13 Nov. 2018 - 15 Nov. 2018
• Seasonal dynamics in pelagic fish abundance around Set-net in Kochi prefecture
  Yanhui Zhu; Kenji Minami; Yuka Iwahara; Kentaro Oda; Koichi Hidaka; Osamu Hoson; Kouji Morishita; Sentaro Tsuru; Masahito Hirota; Hokuto Shirakawa; Kazushi Miyashita
  PICES-2018 Annual Meeting
  25 Oct. 2018 - 04 Nov. 2018
• Pelagic fish abundance in Kochi prefecture coastal area throughout the year
  Yanhui Zhu; Yuka Iwahara; Kenji Minami; Kentaro Oda; Koichi Hidaka; Osamu Hoson; Daichi Oshiyama; Hokuto Shirakawa; Kouji Morishita; Sentaro Tsuru; Masahito Hirota; Kazushi Miyashita
  2nd Oceanoise Asia Conference, English
  05 Jun. 2018 - 07 Jun. 2018
• 静岡県用宗沿岸における シラスの分布評価ツールの開発
  押山大智; 南憲雌; 小林憲一; 白川北斗; 朱妍卉; 宮下和士
  平成29年度北海道音響資源調査研究情報交換会, 06 Mar. 2018
• 高知県黒潮町鈴地区における 定置網周辺の魚群分布の季節変動
  朱 妍卉; 岩原 由佳; 南 憲吏; 小田 憲太朗; 日高 浩一; 保尊 脩; 白川 北斗; 鶴 專太郎; 廣田 将仁; 宮下 和士
  平成29年度北海道音響資源調査研究情報交換会, 06 Mar. 2018, Japanese
• Characterization of the fish distribution in coast water in Kochi prefecture
  Yanhui Zhu; Yuka Iwahara; Kenji Minami; Kentaro Oda; Koichi Hidaka; Osamu Hoson; Daichi Oshiyama; Hokuto Shirakawa; Kouji Morishita; Sentaro Tsuru; Masahito Hirota; Kazushi Miyashita
  The Eleventh Annual Meeting of Asian Fisheries Acoustics Society, English, Oral presentation
  13 Nov. 2017 - 15 Nov. 2017

• Apr. 2024 - Present
  日本水産学会
• Sep. 2020 - Present
  The North Pacific Marine Science Organization (PICES)

• 氷河末端から海洋へ輸送される土砂の堆積過程を捉える簡便な手法の開発
  北海道大学共同研究利用
  Apr. 2024 - Mar. 2025
  波多俊太郎
  北海道大学, Coinvestigator
• 渡島大沼における藍藻類の経時的分布特性に関する研究
  北海道大学共同研究利用
  Apr. 2024 - Mar. 2025
  北海道大学, Principal investigator
• 普通魚群探知機の定量化 ー海底面の音響反射強度を用いた普通魚群探知機の較正方法の確立ー
  Apr. 2023 - Feb. 2024
  笹川科学研究助成, Principal investigator, 2023-2003

• 1. System design for Marine Fish Stock Assessment in the Southeast Asian Region Program
  Sep. 2023 - Present
  Academic research planning
  Academic research
• Early Career Ocean Professionals (ECOPs) Training and Mentoring task team
  2023 - 2024
  Planning etc
  Academic society etc
• North Pacific Marine Science Organization (PICES) Study Group
  2020 - 2022
  Planning etc
  Academic society etc

• 守れ小笠原の「シロワニ」 北大など協力呼び掛け 活動費捻出へCF
  Dec. 2024
  Other than myself
  北海道新聞
  [Paper]
• サメ「シロワニ」研究へＣＦ募る 北大（函館）が主要部分担う 生態全容解明へ
  Dec. 2024
  Other than myself
  函館新聞
  [Paper]