Social complexity and brain evolution: insights from ant neuroarchitecture and genomics.

Autor: Traniello JF; Department of Biology, Boston University, Boston, MA, USA; Graduate Program in Neuroscience, Boston University, Boston, MA, USA. Electronic address: jft@bu.edu., Linksvayer TA; Department of Biological Science, Texas Tech University, Lubbock, TX, USA., Coto ZN; Department of Biology, Boston University, Boston, MA, USA.
Jazyk: angličtina
Zdroj: Current opinion in insect science [Curr Opin Insect Sci] 2022 Oct; Vol. 53, pp. 100962. Date of Electronic Publication: 2022 Aug 24.
DOI: 10.1016/j.cois.2022.100962
Abstrakt: Brain evolution is hypothesized to be driven by requirements to adaptively respond to environmental cues and social signals. Diverse models describe how sociality may have influenced eusocial insect-brain evolution, but specific impacts of social organization and other selective forces on brain architecture have been difficult to distinguish. Here, we evaluate predictions derived from and/or inferences made by models of social organization concerning the effects of individual and collective behavior on brain size, structure, and function using results of neuroanatomical and genomic studies. In contrast to the predictions of some models, we find that worker brains in socially complex species have great behavioral and cognitive capacity. We also find that colony size, the evolution of worker physical castes, and task specialization affect brain size and mosaicism, supporting the idea that sensory, processing and motor requirements for behavioral performance select for adaptive allometries of functionally specialized brain centers. We review available transcriptomic and comparative genomic studies seeking to elucidate the molecular pathways functionally associated with social life and the genetic changes that occurred during the evolution of social complexity. We discuss ways forward, using comparative neuroanatomy, transcriptomics, and comparative genomics, to distinguish among multiple alternative explanations for the relationship between the evolution of neural systems and social complexity.
(Copyright © 2022 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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