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Utsunomiya CampusA collaborative research group led by Professor Katayama has discovered a hormone that regulates blood sugar levels and is involved in the reproductive mechanism of Sakura shrimp.

On Wednesday, April 16, 2025, Hidekazu Katayama, Professor Utsunomiya Campus Liberal Arts Center, Teikyo University, conducted a joint research with Kenji Toyoda, Graduate School Assistant Professor of the Graduate School of Integrated Life Sciences, Hiroshima University, Sadakazu Saito, Senior Principal Researcher of the Marine Open Innovation Organization, and Tsuyoshi Ohira Professor of Kanagawa University. We discovered a blood sugar regulator in cherry shrimp.
This joint research group focused on the "eye pattern hormones" that are said to work during the growth and spawning of shrimp, and found hormones that have the function of regulating blood sugar levels among them. In addition, it was revealed that shrimp members (decapod crustaceans = shrimp and crabs, etc.), including cherry shrimp, have more eye pattern hormones than expected. In the future, research on other eye pattern hormones is expected to deepen our understanding of the reproductive mechanism of cherry shrimp, develop technology for stable egg collection, and secure a sustainable amount of resources.

The results of this research were published in the online version of the international academic journal Fisheries Science on Wednesday, April 16, 2025.

Press release here
The published paper (in English) can be found here
For more information about Professor Katayama, click here

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