Brain energy metabolism as an underlying basis of slow and fast cognitive phenotypes in honeybees.

Autor:	Tait C; Department of Biology, Colorado State University, Fort Collins, CO 80523, USA., Chicco AJ; Department of Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA., Naug D; Department of Biology, Colorado State University, Fort Collins, CO 80523, USA.
Jazyk:	angličtina
Zdroj:	The Journal of experimental biology [J Exp Biol] 2024 Sep 01; Vol. 227 (17). Date of Electronic Publication: 2024 Sep 03.
DOI:	10.1242/jeb.247835
Abstrakt:	In the context of slow-fast behavioral variation, fast individuals are hypothesized to be those who prioritize speed over accuracy while slow individuals are those which do the opposite. Since energy metabolism is a critical component of neural and cognitive functioning, this predicts such differences in cognitive style to be reflected at the level of the brain. We tested this idea in honeybees by first classifying individuals into slow and fast cognitive phenotypes based on a learning assay and then measuring their brain respiration with high-resolution respirometry. Our results broadly show that inter-individual differences in cognition are reflected in differences in brain mass and accompanying energy use at the level of the brain and the whole animal. Larger brains had lower mass-specific energy usage and bees with larger brains had a higher metabolic rate. These differences in brain respiration and brain mass were, in turn, associated with cognitive differences, such that bees with larger brains were fast cognitive phenotypes whereas those with smaller brains were slow cognitive phenotypes. We discuss these results in the context of the role of energy in brain functioning and slow-fast decision making and speed accuracy trade-off. Competing Interests: Competing interests The authors declare no competing or financial interests. (© 2024. Published by The Company of Biologists Ltd.)
Databáze:	MEDLINE
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