What we did is a research group of Associate Professor Tomikawa of Education Faculty of Hiroshima University and Associate Professor Takafumi Nakano of Faculty of Science, Kyoto University.

Yogo shrimps, which seems to be a new species, are inhabited in a cave that is about 1 centimeter in length and not illuminated by light, so there is no pigment and it is transparent and the eyes are not degenerate. It is believed to be grasping the surrounding environment by tactile senses.

Approximately 9000 species of confectionery are confirmed in rivers and oceans around the world, but rice bran shrimp in the cave is rare, and only 6 species have been confirmed in the country in the past.

Although it was confirmed in Showa 2 in Showa 2, it was supposed to be "Shikoku Yoko shrimp" which lives mainly in Shikoku for over 90 years, but the research group collected the DNA of Yoko-shrimp collected in Aki-dong As a result of analysis, the sequence of genes was different from the shikoku yoko shrimp.

In addition, a thorn that is not found in Shokoku Yoko Shrimp has been confirmed, the research group sees it as a new species that evolved independently, and it is posted in international journals last month and will be posted in autumn That is to say.

Associate Professor Bucheon said, "I was surprised that there were unknown creatures in the famous cave like Akihon-dong. Because it is useful to think about the process of evolution of Yoko Shrimp, it is necessary to conserve habitat There is it.