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15 labs · 0 student voices
Other departments in School of Fisheries Sciences ›Faculties at Hokkaido University ›
Yasuaki Takagi, Professor
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Takagi Lab researches how to make effective use of the collagen contained in fish bodies. When fish are processed, parts such as the head, bones, and skin are discarded (by-products). The lab aims to extract useful components from these parts and develop new products, so that fish are used without waste. The lab also studies the farming of sturgeon, whose roe is harvested as caviar.
Shigeho Ijiri, Professor
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Ijiri Lab studies how germ cells, the precursors of eggs and sperm, develop in fish. The lab aims to uncover these mechanisms and create technologies that control sex differentiation and sexual maturation in fish. Using mainly sturgeons, Japanese eel, and masu salmon, the lab focuses on gonadal endocrinology. Members get a firsthand sense of the challenges at aquaculture sites, then carry out basic and applied research in the lab to solve them.
Kazuhiro Ura, Professor
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Ura Lab (Marine Animal Physiology Lab) studies osmoregulation in fish and how invertebrates adapt to their environment. The lab learns from living organisms how they adapt to, and coexist with, environments that change from moment to moment. In its lab introduction, students present the sea urchin aquaculture demonstration trial being run at the Faculty of Fisheries Sciences, through a video they made.
Takashi Todo, Professor
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Under the keyword “the science of fish eggs,” the Marine Animal Reproductive Biochemistry Lab studies how fish eggs are formed (oogenesis). Building on this basic research, the lab develops seed production techniques for producing juvenile fish for aquaculture, and runs breeding trials using advanced technologies. The lab is also developing efficient methods for surveying fish resources and biotechnologies that use fish. Its goal is to clarify the reproductive mechanisms of each species, bring them under human control, and connect this to industries such as aquaculture.
ichiro Higuchi, Project Assistant Professor
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Project Assistant Professor ichiro Higuchi studies how the gonads of sea urchins grow larger, as well as sea urchin aquaculture. Sea urchins are a high-end food, but they are also a problem because they eat seaweed down to nothing and cause isoyake (the loss of seaweed beds). Urchins in isoyake-affected seas are skinny and have no commercial value. To put them to use through aquaculture, the lab is carrying out research toward developing formulated feed for sea urchins. The lab works on both molecular biology research in the laboratory and aquaculture demonstration trials in the field.
Hiroyuki Mizuta, Professor
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Professor Hiroyuki Mizuta’s lab studies how seaweeds such as kelp live and increase in an ever-changing environment. Seaweeds form seaweed beds along the coast, where they serve as habitat and food for marine life and help purify the water. The lab focuses on the maturation of the kelp that people farm and harvest, and studies the conditions and mechanisms that lead to maturation, as well as techniques for controlling it by human hands. Other research topics include the techniques that underlie seaweed reproduction and breeding, the mechanisms by which seaweed protects itself from stress, and nutritional physiology.
Takafumi Fujimoto, Professor
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The Developmental Biology Lab uses medaka and loach to study germ cells, the cells that give rise to sperm and eggs. The loach group led by Professor Takafumi Fujimoto and the medaka group led by Associate Professor Toshiya Nishimura work together to run the lab. Using medaka, a model fish species, and loach, a non-model species in which clonal reproduction has been found, the lab aims to clarify, at the gene level, reproductive mechanisms shared across species. The loach group also studies how genome composition affects gamete formation, and develops technologies that use germ cells to preserve and regenerate genetic resources.
Toshiki Uji, Associate Professor
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The Uji Lab studies the mechanisms of seaweed reproduction, focusing on laver (amanori) red algae, the raw material for nori. Seaweeds are thought to sense changes in their surrounding environment and regulate the switch from growth to reproduction, but the mechanism is still unknown. To enable sustainable seaweed production, the lab works to clarify reproductive mechanisms and to develop technologies that form the basis of breeding (variety improvement). The lab also studies the reproductive mechanisms of Gracilaria (ogonori), a red alga used as a raw material for agar.
Kazuki Sugawara, Assistant Professor
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Assistant Professor Kazuki Sugawara studies methods to sustainably increase and grow useful seaweeds, based on reproductive mechanisms and relationships between organisms. Seaweeds are highly diverse organisms, but most of them are still not well understood. The lab aims to understand seaweed diversity and reproduction, and to obtain basic knowledge that leads to techniques for seaweed bed restoration and aquaculture.
Akira Inoue, Professor
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Professor Akira Inoue's lab studies the genes and proteins of enzymes found in marine organisms. Marine organisms have many enzymes that terrestrial organisms do not. Focusing on enzymes such as those that break down polysaccharides, the lab uses methods including gene cloning, heterologous expression (making a protein in the cells of a different organism), and the creation of mutants.
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