Volume 90 · Number 1 · January 2024 ISSN 0919-9268
Igor H. Lourenço, Carolina R.C. Doria, Marcelo R. Anjos … 1
Practical target strength of free-swimming chub mackerel Scomber japonicusYanhui Zhu, Keizo Ito, Kosuke Mizutani, Kenji Minami, Hokuto Shirakawa, Yohei Kawauchi, Yuka Iwahara, Kimiharu Nahata, Nobuhiko Sato, Kyosuke Seki, Mitsuki Kuroda, Kazushi Miyashita … 15
Biology Differences in spawning migration timing and mortality between males and females of the pelagic goby Gymnogobius isaza in Lake Biwa, central JapanTsuyoshi Takenaka, Daisuke Ishizaki, Masataka Hatano, Yasuhiro Fujioka, Yoshiaki Kai, Takeshi Kikko … 29
mRNA expression profiles of proteolytic genes during the process of ovulation in ovarian follicles of sturgeonsRyohei Surugaya, Yuya Hasegawa, Kazuki Tousaka, Shinji Adachi, Shigeho Ijiri … 41
Development of a repetitive DNA marker for identification of the exotic large-scale loach introduced to JapanMasamichi Kuroda, Noriko Azuma, Takafumi Fujimoto, Katsutoshi Arai … 53
Dynamics of serum IgM level during the growth of juvenile Japanese amberjack Seriola quinqueradiataYuta Matsuura, Yoshiko Shimahara, Yukinori Shimada, Ikki Yamamoto, Tomokazu Takano, Tomomasa Matsuyama … 65
Aquaculture Effects of Penaeus japonicus stocking density on water quality and bacterial community structure in water in an integrated multi-trophic aquaculture (IMTA) systemShuo Kong, Zhao Chen, Abdallah Ghonimy, Fazhen Zhao, Jian Li … 75
Environmental DNA-based quantification of Edwardsiella bacteria and fish-derived materials in rearing water of infected ayu Plecoglossus altivelis and red sea bream Pagrus majorHisato Takeuchi, Hidemasa Kawakami, Nobuhiro Mano, Hiroki Yamanaka, Sonoko Shimizu … 93
Effect of short-term oral supplementation with marine-derived n-3 polyunsaturated fatty acids on gene expression of synaptosome-associated protein 25 in the olfactory organ and brain of juvenile chum salmon Oncorhynchus ketaAsumi Urushiyama, Mitsuru Torao, Takashi Abe, Tomoharu Watanabe, Yasuyuki Miyakoshi, Hiroshi Ueda, Hideaki Kudo … 105
Synbiotic administration in Japanese eels with prebiotic 1-kestose and probiotic Lactiplantibacillus plantarum FM8 improved feed eff ciency and significantly reduced the levels of EdwardsiellaTadashi Fujii, Masayuki Yoshikawa, Nobuhiro Kondo, Saki Yamakawa, Kohei Funasaka, Yoshiki Hirooka, Takumi Tochio … 115
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