2023 Fiscal Year Final Research Report
Studies on social recognition in fish: evolutionary origin of sophisticated cognitive ability in vertebrates
Project/Area Number |
21K20302
|
Research Category |
Grant-in-Aid for Research Activity Start-up
|
Allocation Type | Multi-year Fund |
Review Section |
0110:Psychology and related fields
|
Research Institution | Niigata University (2023) Osaka Metropolitan University (2022) Osaka City University (2021) |
Principal Investigator |
Kawasaka Kento 新潟大学, 佐渡自然共生科学センター, 特任助教 (60908416)
|
Project Period (FY) |
2021-08-30 – 2024-03-31
|
Keywords | 社会認知能力 / 顔認知 / 個体識別 / 鏡像自己認知 / 認知プロセス / カワスズメ科魚類 / ホンソメワケベラ |
Outline of Final Research Achievements |
We examined cognitive processes underlying individual recognition and mirror-self recognition in Cichlid fish (Neolamprologus pulcher) and cleaner wrasse (labroides dimidiatus). These species exhibit sophisticated social behaviour such as cooperation, punishment or intentional deception. Our results show that N. pulcher exhibits the “other-race effect”, where fish discriminate between familiar and unfamiliar individuals from their population better than from the other population. Moreover, we show that cleaner wrasse recognize themselves via self-face. These results are like those of humans or primates in conspecific or self-recognition. It indicates the importance of spotlighting non-primates, including fish, for understanding the evolutionary processes of our social cognitive abilities.
|
Free Research Field |
行動生態学
|
Academic Significance and Societal Importance of the Research Achievements |
近年、魚類をはじめとする様々な動物で協力や欺き、共感、罰など、従来はヒトなどの高度な動物のものと考えられてきた社会認知能力の証拠が見つかっています。本研究では、それらの社会認知能力の前提となる個体識別や自己認識が、魚類の頭の中でどのような情報処理によって実現されているかを検証しました。その結果、魚類が他個体を見分けたり、鏡像を自分であると認識したりする際の情報処理はヒトとよく似た方法をとることが明らかになりました。これらの結果は、ヒトのもつ高度な社会関係の起源をめぐる考えに、新たな視点を提供するものになります。
|