Unknown

Dataset Information

0

Different ways of evolving tool-using brains in teleosts and amniotes.


ABSTRACT: In mammals and birds, tool-using species are characterized by their relatively large telencephalon containing a higher proportion of total brain neurons compared to other species. Some teleost species in the wrasse family have evolved tool-using abilities. In this study, we compared the brains of tool-using wrasses with various teleost species. We show that in the tool-using wrasses, the telencephalon and the ventral part of the forebrain and midbrain are significantly enlarged compared to other teleost species but do not contain a larger proportion of cells. Instead, this size difference is due to large fiber tracts connecting the dorsal part of the telencephalon (pallium) to the inferior lobe, a ventral mesencephalic structure absent in amniotes. The high degree of connectivity between these structures in tool-using wrasses suggests that the inferior lobe could contribute to higher-order cognitive functions. We conclude that the evolution of non-telencephalic structures might have been key in the emergence of these cognitive functions in teleosts.

SUBMITTER: Estienne P 

PROVIDER: S-EPMC10786859 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature

altmetric image

Publications

Different ways of evolving tool-using brains in teleosts and amniotes.

Estienne Pierre P   Simion Matthieu M   Hagio Hanako H   Yamamoto Naoyuki N   Jenett Arnim A   Yamamoto Kei K  

Communications biology 20240112 1


In mammals and birds, tool-using species are characterized by their relatively large telencephalon containing a higher proportion of total brain neurons compared to other species. Some teleost species in the wrasse family have evolved tool-using abilities. In this study, we compared the brains of tool-using wrasses with various teleost species. We show that in the tool-using wrasses, the telencephalon and the ventral part of the forebrain and midbrain are significantly enlarged compared to other  ...[more]

Similar Datasets

| S-EPMC7478893 | biostudies-literature
| S-EPMC6807612 | biostudies-literature
| S-EPMC5296312 | biostudies-literature
| S-EPMC6752857 | biostudies-literature
| S-EPMC2818695 | biostudies-literature
| S-EPMC6760167 | biostudies-literature
| S-EPMC5898524 | biostudies-literature
| S-EPMC8644469 | biostudies-literature
| S-EPMC8675693 | biostudies-literature
| S-EPMC2826309 | biostudies-literature