Yuichi Amano, a graduate student at our university, won the best poster oral presentation award at the ASIA PACIFIC MARINE BIOTECHNOLOGY CONFERENCE 2023 (APMBC) held in Adelaide, Australia from October 10nd to October 2th, 10.

【Winner】
Yuichi Amano (Doctoral Candidate, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology)3Year)

[Title of award-winning research]
Development of a new method to eradicate invasive fish using surrogate fish producing xenogeneic sperm

[Details of award-winning research]
　In order to solve the problem of non-native fish, which is a problem around the world, we aimed to develop a new method for eradicating non-native fish by combining the hybrid lethal phenomenon and the surrogate broodstock technique.In this study, we produced a rainbow trout surrogate parent that surrogately produces brown trout sperm, which is lethal when hybridized with rainbow trout, and released it into an experimental river along with wild-type rainbow trout.As a result, we found that male surrogate parents and female wild fish can naturally interbreed in the field environment, that lethal hybrids can be induced through natural mating, and that as a result, surrogate parents can reproduce wild fish through natural mating. It was shown for the first time that production could be inhibited.This research can provide important basic information for establishing the ``last step to eradicate the low-density alien fish population,'' which is needed in the current invasive fish problem.

<Related links>
ASIA PACIFIC MARINE BIOTECHNOLOGY CONFERENCE 2023