1. A broadband target strength measurement method for weakly scattering animals using a 50-ms-long linear frequency modulated signal in a small tank

   • Burak Saygili
   • Soma Tsuyuki
   • Kazuo Amakasu

   Original Article 06 August 2021 Pages: 627 - 638

   

2. Migration patterns and changes in hatching date of neon flying squid Ommastrephes bartramii distributed in the northwestern Pacific Ocean in early summer and caught in fishing grounds off the coast of northeastern Japan in winter

   • Hajime Matsui
   • Jun-ichi Abo
   • Mitsuo Sakai

   Original Article 19 July 2021 Pages: 639 - 651

   

3. Initial growth characteristics of poor-return stocks of chum salmon Oncorhynchus keta originating from the Okhotsk and Nemuro regions in Hokkaido on the basis of scale analysis

   • Kentaro Honda
   • Tomoki Sato
   • Toshihiko Saito

   Original Article 18 August 2021 Pages: 653 - 663

   

4. Differences in gonadotropin-releasing hormone levels between the ocular and blind sides of the asymmetric brain in a pleuronectiform fish, barfin flounder Verasper moseri

   • Hiroaki Chiba
   • Noriko Amiya
   • Masafumi Amano

   Original Article 13 August 2021 Pages: 665 - 670

   

5. Morphological characteristics of ephyrae of Aurelia coerulea derived from planula strobilation

   • Satsuki Takauchi
   • Hiroshi Miyake
   • Shinichiro Ikeguchi

   Original Article Open access 31 August 2021 Pages: 671 - 679

   

6. Effects of rearing temperature manipulation on oocyte maturation progress in Japanese eel

   • Toshiomi Tanaka
   • Shinji Adachi
   • Tatsuya Unuma

   Original Article 14 June 2021 Pages: 681 - 691

   

7. Correction to: Effects of rearing temperature manipulation on oocyte maturation progress in Japanese eel

   • Toshiomi Tanaka
   • Shinji Adachi
   • Tatsuya Unuma

   Correction 13 August 2021 Pages: 693 - 695

   

8. Diversity and functions of bacterial communities in water and sediment from the watershed of the Tama River flowing a highly urbanized area

   • Nanami Mizusawa
   • Md. Shaheed Reza
   • Shugo Watabe

   Original Article 24 August 2021 Pages: 697 - 715

   

9. Evaluation of taurine biosynthesis in the livers of the spear squid Heterololigo bleekeri and the swordtip squid Uroteuthis edulis

   • Takuya Matsumoto
   • Maho Akita
   • Takanobu Goto

   Original Article 30 August 2021 Pages: 717 - 725

   

10. n-3 Polyunsaturated fatty acid-enriched phosphatidylglycerol suppresses inflammation in RAW264.7 cells through Nrf2 activation via alteration of fatty acids in cellular phospholipids

    • Liping Chen
    • Fumiaki Beppu
    • Masashi Hosokawa

    Original Article 27 August 2021 Pages: 727 - 737

    

11. Nutritional value of Pacific herring bone co-ingested with fish meat as a calcium source in retort seafood

    • Ga-Hyun Joe
    • Masataka Ono
    • Hiroki Saeki

    Original Article 12 July 2021 Pages: 739 - 747

    

12. A mechanical separation method for surface ice glaze on ice-glazed shrimp

    • Zheng Xu
    • Yoshio Hagura

    Original Article 02 August 2021 Pages: 749 - 760