2017 - 2020 Resolution of taxonomic confusion of nereidid polychaetes, ecologically important species groups in coastal and estuarine waters.
2017 - 2020 南西諸島の沿岸・汽水域に生息する環形動物ゴカイ科の種多様性の解明
2017 - 2020 南日本沿岸における熱帯産ベントスの北進:在来種への影響評価のための基礎研究
1993 - 1993 ウニ卵でサイクリン非依存的に活性化される卵成熟促進因子の分子的機構の解析
Sex determination of polychaete
Determination of embryonic axis
Control mechanism of oocyte maturation
Control mechanism of mitosis
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Papers (23)：
Hiroaki Tosuji, Taeseo Park, Yuya Goryo, Kotaro Kan, Hirokazu Abe, Masanori Sato. Molecular method to identify the morphologically similar four species of the <i>Perinereis nuntia</i> species complex (Annelida: Nereididae) based on PCR-RFLP analysis of nuclear ribosomal ITS, with new distributional records of the two forms of <i>Perinereis shikueii</i>. Plankton and Benthos Research. 2023. 18. 3. 124-130
Tosuji Hiroaki, Bastrop Ralf, Gotting Miriam, Park Taeseo, Hong Jae-Sang, Sato Masanori. Worldwide molecular phylogeny of common estuarine polychaetes of the genus Hediste (Annelida: Nereididae), with special reference to interspecific common haplotypes found in southern Japan. MARINE BIODIVERSITY. 2019. 49. 3. 1385-1402
Gen Kanaya, Takatoshi Niiyama, Aya Tanimura, Taeko Kimura, Haruhiko Toyohara, Hiroaki Tosuji, Masanori Sato. Spatial and interspecific variation in the food sources of sympatric estuarine nereidid polychaetes: stable isotopic and enzymatic approaches. Marine Biology. 2018. 165. 6
A New Bioassay for Toxic Chemicals Using Green Paramecia, Paramecium bursaria.
Springer-Verlag Berlin 2005 ISBN:9783540228608
Lectures and oral presentations (17)：
Molecular evidence of two sibling species in "Perinereis shikueii" (Annelida: Nereididae) and their distributions in Taiwan and Japan.
(4th Asian Marine Biology Symposium 2019)
Namalycastis spp. (Nereididae, Annelida) living within the decaying plants in estuaries in Malaysia and southern Japan.
(3rd Asian Marine Biology Symposium 2017)
Distributions of four species of the Perinereis nuntia species group (Nereididae, Annelida) in Japan, with special reference to the paragnath morphology variable due to the individual growth in P. shikueii.
(3rd Asian Marine Biology Symposium 2017)
Worldwide molecular phylogeny in Hediste (Annelida: Nereididae) occurring in the North Temperate Zone.
(3rd Asian Marine Biology Symposium 2017)
Distribution of four Hediste species (Polychaeta: Nereididae) in estuaries in Korea and Japan, with special reference to an undescribed species newly found from Han River Estuary.
(2nd Asian Marine Biology Symposium 2014)
