No.253 Seminar ： Decoding marine fish life histories: insights from chemical signatures
- Tatsuya Sakamoto Assistant Professor, Graduate School of Human and Environmental Studies
- 2024/08/20 4:45pm
- Research Administration Building, Basement Floor (Conference Rooms 1&2)
- English
- Onsite
Summary
Marine fish populations are of vital importance to human society,
providing food, economic benefits and ecological services. However, the
vastness of the oceans, the small size of the fish and the fact that
humans live mainly on land severely limit our understanding of their
life cycles and population dynamics under changing climatic conditions.
Here I present my research that addresses these challenges by analysing
chemical signatures inside fish heads that record life events and
environmental conditions experienced by individuals. The recent study of
the eye lenses of sardines (“iwashi”) around Japan suggests intense
migrations from the Pacific to the Sea of Japan, necessitating a
rethinking of population dynamics and management strategies. As such
technical advances are essential for a better understanding of marine
life, I look forward to new ideas for future developments that will
improve our ability to study marine fish life.