ArticleCommunications biology2024
Different ways of evolving tool-using brains in teleosts and amniotes.
Article in Communications biology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Neuroanatomical diversity in Teleocichla with new volumetric and histological insights into the encephalon of Teleocichla monogramma Kullander 1988.Anatomical record (Hoboken, N.J. : 2007) · 2026Article
- Endothermy, neuron counts, and other issues: Further remarks on neurocognitive evolution in fossil vertebrates.Anatomical record (Hoboken, N.J. : 2007) · 2026Article
- IgT and IgD dominance in the teleost central nervous system.Frontiers in immunology · 2025Article
- Evolution of the visual system in ray-finned fishes.Visual neuroscience · 2023Article
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6 authors.
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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.
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