Graduate School of Biosphere Science > Organization > Aquatic Biology Division
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For efficient stock enhancement, stable supply and sustainable utilization of economic aquatic organisms and for aquatic environmental conservation, the Aquatic Biology course provides education and conducts various types of research to clarify their reproductive and survival strategy, their relationship with environmental factors, and devising methods to evaluate their genetic diversity. This course also deals with the neural control mechanisms of aquatic animal behavior and infection strategies and epidemiology of viral and bacterial diseases in fishes and shellfishes as well as their metabolic pathways and intracellular signal systems.
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Fish Neurobiology
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The aim of our research is to reveal the neural control mechanisms affecting various behaviors of animals including fish. Our present projects include
1) Neurophysiological and molecular biological study on neural mechanisms controlling swimming and spawning behavior in fish (Uematsu, K.)
2) Neurobiological approach to the mind-brain relationship (Yoshida, M.)
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<Academic Staff>
UEMATSU Kazumasa (Professor)
YOSHIDA Masayuki (Associate Professor)
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Neural circuit in the goldfish
cerebellum
(Click the picture to enlarge)
Experiment on learning
behavior in fish. |
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Aquatic Pathology
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The Laboratory of Aquatic Pathology studies infectious diseases of cultured and wild fin fish and shellfish, particularly those caused by viruses and bacteria, in order to reveal infection mechanisms and develop effective control measures of the diseases.
1) Infection mechanisms of fish-pathogenic viruses and bacteria (Nakai, T.)
2）Studies on fish-virus interactions using model fish（Okinaka, Y.）
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<Academic Staff>
NAKAI Toshihiro (Professor)
OKINAKA Yasushi (Associate Professor)
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Edwardsiella ictaluri
-specific bacteriophage
Betanodavirus in
a nerve cell of fish |
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Benthos Ecology
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Benthos Ecology laboratory has an objective to understand the complexities of aquatic animal life and to apply them to human systems through the study of their ecology and other relevant environmental factors using various methods from multiple approaches.
1) Survival strategy of marine benthos based on population dynamics (Imabayashi, H.)
2) Application of freshwater organisms as environmental indicators and for ecological restoration (Kawai, K.)
3) Predatory organisms of tidal flat clams and population ecology of lancelets (Saito, H.)
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<Academic Staff>
IMABAYASHI Hiromichi (Professor)
KAWAI Koichiro (Professor)
SAITO Hidetoshi (Associate Professor)
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A clam, Ruditapes philippinarum
Head of a char,
Salvelinus leucomaenis imbrius |
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Biology of Aquatic Resources
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The Laboratory of Biology of Aquatic Resources conducts various studies on fisheries biology for the optimal use of fisheries resources, and ecological studies of reef fishes towards understanding the diversity of adaptative modes in nature.
1) Behavioral ecology of reef fishes mainly focusing on their sex change strategy (Sakai, Y.)
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<Academic Staff>
SAKAI Yoichi (Professor)
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Field study of sand eel fisheries off Matsuyama, Ehime Prefecture
Underwater demographic
investigation on fish populations
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Aquatic Biochemistry
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In the Laboratory of Aquatic Biochemistry, we are studying molecular mechanisms of metabolism, endocrine function, homeostasis, and metamorphosis of aquatic organisms using biochemical and molecular biological techniques.
1) Structure and function of nonspecific defense molecules in fish (Iijima, N.)
2) Molecular biology of sex change in fish and of metamorphosis in jellyfish (Kuniyoshi, H.)
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<Academic Staff>
IIJIMA Noriaki (Professor)
KUNIYOSHI Hisato (Associate Professor)
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Peptide analysis by LC-MS
Courtship behavior of wrasse
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Aquaculture
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The overall research goal of the Laboratory of Aquaculture is to contribute to effective stock enhancement of various fisheries resources in the seas and rivers through basic and applied studies.
1) Utilization of parasites as biological tags to study the ecology of aquatic animals (Nagasawa, K.)
2) Development of genetic markers to assess the impact of stocking of aquatic animals (Umino, T.)
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<Academic Staff>
NAGASAWA Kazuya (Professor)
UMINO Tetsuya (Associate Professor)
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Strontium distribution
in otolith of ayu
(Click the picture to enlarge)
Isopod parasitic on
a black sea bream |
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