期刊
CELL AND TISSUE RESEARCH
卷 383, 期 1, 页码 149-164出版社
SPRINGER
DOI: 10.1007/s00441-020-03329-z
关键词
Antenna; Antennal lobe; Mushroom body; Neuromodulation; Structural synaptic plasticity
类别
资金
- French National Funding Agency (ANR)
- Region Pays de la Loire
- French Institute of Agricultural Research (INRAE)
- German Research Foundation (DFG) [SPP 1392 (Ro1177/5-2), SFB 1047]
- University of Wurzburg
- Projekt DEAL
Olfactory circuits in insects exhibit various types of plasticity related to reproductive or feeding state, adult age, environmental context, and associative learning. The changes in molecular, physiological, and structural levels are influenced by neuromodulators, but further mechanisms are still being studied.
Olfactory circuits change structurally and physiologically during development and adult life. This allows insects to respond to olfactory cues in an appropriate and adaptive way according to their physiological and behavioral state, and to adapt to their specific abiotic and biotic natural environment. We highlight here findings on olfactory plasticity and modulation in various model and non-model insects with an emphasis on moths and social Hymenoptera. Different categories of plasticity occur in the olfactory systems of insects. One type relates to the reproductive or feeding state, as well as to adult age. Another type of plasticity is context-dependent and includes influences of the immediate sensory and abiotic environment, but also environmental conditions during postembryonic development, periods of adult behavioral maturation, and short- and long-term sensory experience. Finally, plasticity in olfactory circuits is linked to associative learning and memory formation. The vast majority of the available literature summarized here deals with plasticity in primary and secondary olfactory brain centers, but also peripheral modulation is treated. The described molecular, physiological, and structural neuronal changes occur under the influence of neuromodulators such as biogenic amines, neuropeptides, and hormones, but the mechanisms through which they act are only beginning to be analyzed.
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