Research

Fish eggs grow rapidly while storing various substances such as proteins, lipids, sugars, vitamins and hormones as yolk in their cells. These yolk substances are important nutrient sources that affect the quality of the hatchlings. In addition, the growth of eggs is a process in which various biological molecules, including genes, proteins and hormones, closely work together. This process varies by fish species and environmental factors such as light and water temperature affect the profile of these internal factors and regulate the egg growth. We are conducting detailed comparative analysis of the egg formation process in a wide variety of fish using life science techniques (immunobiochemistry, molecular biology, cell biology, etc.). Based on this basic research, we are also conducting applied research such as the monitoring of environmental hormone pollution, the development of a fish egg species identification method and the development of a simple fish sex identification method.