New article: Caulerpa chemnitzia var. laetevirens

Introducing a new article that explores the optimization of cultivation and shipping environments for an edible green alga, Caulerpa chemnitzia var. laetevirens from Japan.

https://onlinelibrary.wiley.com/doi/full/10.1111/pre.12539

 

Terada, Matsuda, Nishihara 2024. Optimizing cultivation and shipping environments for an edible green alga, Caulerpa chemnitzia var. laetevirens (Bryopsidales) from Japan: Effects of temperature, irradiance, desiccation and salinity on photochemical efficiency. 

Phycological Research 72 (1): Online

DOI: 10.1111/PRE.12539

Caulerpa chemnitzia var. laetevirens

Harvested Caulerpa chemnitzia var. laetevirens

 

Annual research achievement 2023

This is an annual research achievement from the 2023 Marine Botany Laboratory at Kagoshima University. As we reflect on the year, we would like to express our gratitude to all the students, colleagues, co-authors, and contributors. Thank you for a great year.

Articles

1. Yukiko Yonemori, Shogo Kokubu, Gregory N. Nishihara, Hikaru Endo, Ryuta Terada 2023. The effects of desiccation and salinity gradients in the PSII photochemical efficiency of an intertidal brown alga, Sargassum fusiforme from Kagoshima, Japan. Phycological Research 71: 3–12 https://doi.org/10.1111/PRE.12491 (3 January 2023) 

 

2. Tomohiro Ito, Toui Yoshioka, Hiromori Shimabukuro, Gregory N. Nishihara, Hikaru Endo, Ryuta Terada 2023. The effect of temperature, light-spectrum, desiccation, and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum from Japan. Phycological Research 71: 25–36 https://doi.org/10.1111/pre.12508 (3 January 2023)

 

3. Hikaru Endo, Hikari Moriyama, Yutaka Okumura 2023. Photoinhibition and photoprotective responses of a brown marine macroalga acclimated to different light and nutrient regimes. Antioxidants 12: 357 https://doi.org/10.3390/antiox12020357 (2 February 2023)

 

4. Yoichi Sato, Takayuki Fujiwara, Hikaru Endo 2023. Density regulation of aquaculture production and its effects on commercial profit and quality as food in the cosmopolitan edible seaweed Undaria pinnatifida. Frontiers in Marine Science 10: 1085054 https://doi.org/10.3389/fmars.2023.1085054 (10 February 2023)

 

5. 島田菜摘，Gregory N. Nishihara，寺田竜太．2023．奄美大島産ウミジグサHalodule uninervisの光合成における温度や光の影響．日本水産学会誌89: 115–126 https://doi.org/10.2331/suisan.22-00035 （3月15日）．Natsumi Shimada, Gregory N. Nishihara, Ryuta Terada. 2023. The effect of temperature and irradiance on the photosynthesis of a seagrass, Halodule uninervis from Amami-Oshima Island, Kagoshima. Nippon Suisan Gakkaishi 89: 115–126 https://doi.org/10.2331/suisan.22-00035 (15 March 2023)

 

6. 豊田（小谷野）有加，広瀬雅人，中野智之，小松浩典，寺田竜太，豊福高志，長井裕季子，今井仁，小山田佑輔，向哲嗣，川口大朗，高嶺春夫，港隆一，森英章，三宅裕志2023．西之島の海洋生物相の速報．小笠原研究49: 113–168, https://ogasawara.fpark.tmu.ac.jp/pdf/No49/OgasawaraResearchNo.49_113-168.pdf（2023年3月）. Yuka Toyoya (Koyano), Masato Hirose, Tomoyuki Nakano, Hironori Komatsu, Ryuta Terada, Takashi Toyofuku, Yukiko Nagai, Hitoshi Imai, Yusuke Oyamada, Akitsugu Mukai, Dairou Kawaguchi, Ryuichi Minato, Hideaki Mori, Hiroshi Miyake 2023. Preliminary report of marine macrofauna of Nishinoshima Island. Ogasawara Research 49: 113–168, https://ogasawara.fpark.tmu.ac.jp/pdf/No49/OgasawaraResearchNo.49_113-168.pdf (March 2023)

 

7. Ryuta Terada, Aoi Shindo, Hikari Moriyama, Narumi Shimboku, Gregory N. Nishihara 2023. The response of photosynthesis to temperature and irradiance in a green alga, Ryuguphycus kuaweuweu (Ulvales) reveals adaptation to a subtidal environment in the northern Ryukyu Islands. Algal Research 74: Article 103189, https://doi.org/10.1016/j.algal.2023.103189 (29 June 2023)

 

8. Ryuta Terada, Rumina Nakamura, Takuya Iwanaga, Keita Nakahara, Gregory N. Nishihara 2023. The real-time measurements of PSII photochemical efficiency in the microscopic sporophyte of Pyropia yezoensis f. narawaensis (Bangiaceae) reveals the low capacity of desiccation tolerance that drops within a few minutes of dehydration. Algal Research 75: 103283, https://doi.org/10.1016/j.algal.2023.103283 (4 October 2023)

 

9. 新北成実，寺田竜太．2023．鹿児島湾のアマモ場：2021年の分布状況と長期的な衰退．日本水産学会誌89: 510–520 https://doi.org/10.2331/suisan.23-00020 （2023年11月15日）．Narumi Shimboku, Ryuta Terada. 2023. Seagrass bed in Kagoshima Bay: The distribution status in 2021 and long-term decline. Nippon Suisan Gakkaishi 89: 510–520 https://doi.org/10.2331/suisan.23-00020 (15 November 2023)

 

10. 中村瑠美奈，岩永卓也，中原啓太，住吉大，寺田竜太．2023．ノリ養殖採苗日の延期に伴って行われる殻胞子放出抑制処理がカキ殻糸状体の光合成光化学効率に及ぼす影響．日本水産学会誌89: 521–528 https://doi.org/10.2331/suisan.23-00024 （2023年11月15日）. Rumina Nakamura, Takuya Iwanaga, Keita Nakahara, Dai Sumiyoshi, Ryuta Terada 2023. The effect of photochemical efficiency in cultivated Pyropia sporophytes under the conchospore-release suppression treatment resulting from postponed seeding date. Nippon Suisan Gakkaishi 89: 521–528 https://doi.org/10.2331/suisan.23-00024 (15 November 2023)

 

11. Ryuta Terada, Koki Matsuda, Gregory N. Nishihara. 2024. Optimizing cultivation and shipping environments for an edible green alga, Caulerpa chemnitzia var. laetevirens (Bryopsidales) from Japan: Effects of temperature, irradiance, desiccation, and salinity on photochemical efficiency. Phycological Research (In press)

 

Journal Cover

1. Phycological Research 71 (1) January 2023. https://doi.org/10.1111/pre.12492

 

Others

1. 寺田竜太．2023．鹿児島大学における「ひらめき☆ときめきサイエンス」の海藻押し葉講座：10年間の軌跡．藻類71: 103–105.（2023年7月10日）

 

Award

1. 牧野虎太郎．2023．日本藻類学会第47回大会学生発表賞．ポスター発表大形藻の部．日本藻類学会（2023年3月22日）

論文：ノリ養殖採苗日の延期に伴って行われる殻胞子放出抑制処理がカキ殻糸状体の光合成光化学効率に及ぼす影響

新しい論文が出ました。佐賀県有明水産振興センターとの共同研究の成果です。

中村瑠美奈，岩永卓也，中原啓太，住吉大，寺田竜太　2023．

ノリ養殖採苗日の延期に伴って行われる殻胞子放出抑制処理がカキ殻糸状体の光合成光化学効率に及ぼす影響．

日本水産学会誌89 (6): 521–528

DOI: 10.2331/suisan.23-00024

 

https://www.jstage.jst.go.jp/article/suisan/89/6/89_23-00024/_article/-char/ja

無料でダウンロードできます。

 

ノリ養殖の採苗は，地先水温の状況を見ながら事前に採苗日を決めておき，採苗日に胞子体（牡蠣殻糸状体）の殻胞子の放出のピークが来るように放出誘導をします。しかし，台風等の荒天で採苗日を数日延期せざる得ない年が稀にあります。このような場合，殻胞子の放出誘導中にもかかわらず，成熟の進行を一時的に抑え，放出のピークをずらす技術があり，成熟抑制技術や殻胞子放出抑制技術と呼ばれています。今回は，この処理中の胞子体の光合成活性の変化をモニタリングし，この技術の妥当性を評価しました。その結果，ノリ養殖の工程で実際に実施された3日間程度の放出抑制処理では，光化学系IIの実効量子収率は安定して推移することが示唆されました。

論文：鹿児島湾のアマモ場が2006年と比べて1/10に減少

近年，日本各地で藻場の衰退や消失が報告されています。私たちの研究室が2021年に鹿児島湾の海草藻場（アマモ場）を広域調査した結果，2006年と比べて約10分の1に減少していることが明らかになりました。

新北成実，寺田竜太．2023．鹿児島湾のアマモ場：2021年の分布状況と長期的な衰退．

日本水産学会誌

DOI: 10.2331/suisan.23-00020

https://doi.org/10.2331/suisan.23-00020

無料でダウンロードできます。

 

鹿児島湾のアマモ場（鹿児島市）

 

New article: The real-time measurements of PSII photochemical efficiency in the microscopic sporophyte of Pyropia yezoensis f. narawaensis (Bangiaceae) reveals the low capacity of desiccation tolerance that drops within a few minutes of dehydration

Introducing our new article featuring real-time measurements of PSII photochemical efficiency in the microscopic sporophyte of Pyropia yezoensis. It reveals the low capacity of desiccation tolerance that drops within a few minutes of dehydration.

 

Ryuta Terada, Rumina Nakamura, Takuya Iwanaga, Keita Nakahara, Gregory N. Nishihara 2023. 

The real-time measurements of PSII photochemical efficiency in the microscopic sporophyte of Pyropia yezoensis f. narawaensis (Bangiaceae) reveals the low capacity of desiccation tolerance that drops within a few minutes of dehydration. 

Algal Research 75: Article 103283, DOI: 10.1016/j.algal.2023.103283 

 

https://www.sciencedirect.com/science/article/pii/S2211926423003168?dgcid=author

日本学術振興会ひらめき☆ときめきサイエンスの海藻押し葉講座の10年間をまとめた邦文が出ました

私たちの研究室では，小学生向けの海藻押し葉公開講座を日本学術振興会ひらめき☆ときめきサイエンス事業で10年間実施してきました。このほど，10年間の軌跡をまとめた邦文が日本藻類学会和文誌「藻類」に掲載されました。

寺田竜太．2023．鹿児島大学における「ひらめき☆ときめきサイエンス」の海藻押し葉講座：10年間の軌跡．藻類71 (2): 103–105.（2023年7月10日）

以下のリンクよりダウンロード可能です。 

https://researchmap.jp/ryuta-terada/misc/42738266 

https://researchmap.jp/ryuta-terada/misc/42738266/attachment_file.pdf

New article: Ryuguphycus kuaweuweu (= Umbraulva kuaweuweu) from the northern Ryukyu Islands

Please take a look at my latest article featuring the response of photosynthesis to temperature and irradiance in a deep subtidal green alga, Ryuguphycus kuaweuweu (Ulvales), collected from a depth of 35 meters in the northern Ryukyu Islands, Japan.

Terada, Shindo, Moriyama, Shimboku, Nishihara 2023.

The response of photosynthesis to temperature and irradiance in a green alga, Ryuguphycus kuaweuweu (Ulvales) reveals adaptation to a subtidal environment in the northern Ryukyu Islands.

Algal Research 74: Article 103189

DOI: 10.1016/j.algal.2023.103189

https://doi.org/10.1016/j.algal.2023.103189

New article: Density regulation of aquaculture production and its effects on commercial profit and quality as food in the cosmopolitan edible seaweed Undaria pinnatifida

Please take a look at our new article, which discusses the regulation of aquaculture production density and its impact on commercial profitability and food quality of the cosmopolitan edible seaweed, Undaria pinnatifida.

Yoichi Sato, Takayuki Fujiwara, Hikaru Endo 2023. Density regulation of aquaculture production and its effects on commercial profit and quality as food in the cosmopolitan edible seaweed Undaria pinnatifida. Frontiers in Marine Science 10: 1085054 DOI: 10.3389/fmars.2023.1085054

https://www.frontiersin.org/articles/10.3389/fmars.2023.1085054/full

 

論文：奄美大島産海草，ウミジグサの論文

奄美大島産のウミジグサの生理生態に関する論文が出ました。

島田菜摘，Gregory N. Nishihara，寺田竜太．2023．奄美大島産ウミジグサHalodule uninervisの光合成における温度や光の影響．日本水産学会誌89 (2): DOI: 10.2331/suisan.22-00035（早期公開：2023年2月22日）．

 

Natsumi Shimada, Gregory N. Nishihara, Ryuta Terada. 2023. The effect of temperature and irradiance on the photosynthesis of a seagrass, Halodule uninervis from Amami-Oshima Island, Kagoshima. Nippon Suisan Gakkaishi 89 (2): DOI: 10.2331/suisan.22-00035 (Online: 22 February 2023)

https://www.jstage.jst.go.jp/article/suisan/advpub/0/advpub_22-00035/_article/-char/ja

ウミジグサ　Halodule uninervis

論文：海草ウミショウブEnhalus acoroidesの光合成活性の日周変化

熱帯性の海産顕花植物であるウミショウブEnhalus acoroidesの光合成活性の日周変化を測定した論文が出ました。

島田菜摘，Gregory N. Nishihara，寺田竜太．2022．自然光下の測定によるウミショウブの光合成光化学効率の日変化．水産増殖70 (3): 277–280

Natsumi Shimada, Gregory N. Nishihara, Ryuta Terada. 2022. Diurnal change of the photochemical efficiency in a seagrass, Enhalus acoroides, based on the measurement under incident sunlight. Aquaculture Science 70 (3): 277–280

https://researchmap.jp/ryuta-terada/published_papers/41188424

Enhalus acoroides

January issue of Phycological Research

Please check out the cover page of the January issue of Phycological Research. In Kagoshima, Japan, you can see a beautiful underwater view of an edible brown alga, Sargassum fusiforme.

https://onlinelibrary.wiley.com/toc/14401835/2023/71/1

Two articles from my lab are in this issue.

Yonemori, Kokubu, Nishihara, Endo, Terada 2023. The effects of desiccation and salinity gradients in the PSII photochemical efficiency of an intertidal brown alga, Sargassum fusiforme from Kagoshima, Japan

https://onlinelibrary.wiley.com/doi/10.1111/pre.12491 

Ito, Yoshioka, Shimabukuro, Nishihara, Endo, Terada 2023. The effect of temperature, light-spectrum, desiccation, and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum from Japan

https://onlinelibrary.wiley.com/doi/10.1111/pre.12508