Olfactory navigation in arthropods

Journal of Comparative Physiology A, Journal Year: 2023, Volume and Issue: 209(4), P. 467 - 488

Published: Jan. 20, 2023

Abstract Using odors to find food and mates is one of the most ancient highly conserved behaviors. Arthropods from flies moths crabs use broadly similar strategies navigate toward odor sources—such as integrating flow information with information, comparing concentration across sensors, over time. Because arthropods share many homologous brain structures—antennal lobes for processing olfactory mechanosensors flow, mushroom bodies (or hemi-ellipsoid bodies) associative learning, central complexes navigation, it likely that these closely related behaviors are mediated by neural circuits. However, differences in types they seek, physics dispersal, locomotion water, air, on substrates mean circuits must have adapted generate a wide diversity odor-seeking In this review, we discuss common specializations observed navigation behavior arthropods, review our current knowledge about subserving behavior. We propose comparative study arthropod nervous systems may provide insight into how set basic circuit structures has diversified different environments.

Language: Английский

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Neural representation of goal direction in the monarch butterfly brain

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Sept. 20, 2023

Neural processing of a desired moving direction requires the continuous comparison between current heading and goal direction. While neural basis underlying is well-studied, coding remains unclear in insects. Here, we used tetrode recordings tethered flying monarch butterflies to unravel how represented insect brain. recording, maintained robust directions relative virtual sun. By resetting their directions, found neurons whose spatial tuning was tightly linked directions. Importantly, unaffected when changed after compass perturbations, showing that these specifically encode Overall, here discovered invertebrate goal-direction share functional similarities cells reported mammals. Our results give insights into evolutionarily conserved principles goal-directed orientation animals.

Language: Английский

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The conserved RNA-binding protein Imp is required for the specification and function of olfactory navigation circuitry in Drosophila

Current Biology, Journal Year: 2024, Volume and Issue: 34(3), P. 473 - 488.e6

Published: Jan. 4, 2024

Complex behaviors depend on the precise developmental specification of neuronal circuits, but relationship between genetic programs for neural development, circuit structure, and behavioral output is often unclear. The central complex (CX) a conserved sensory-motor integration center in insects, which governs many higher-order largely derives from small number type II stem cells (NSCs). Here, we show that Imp, IGF-II mRNA-binding protein expressed NSCs, plays role specifying essential components CX olfactory navigation circuitry. We following: (1) multiple circuitry arise NSCs. (2) Manipulating Imp expression NSCs alters morphology these elements, with most potent effects neurons targeting ventral layers fan-shaped body (FB). (3) regulates Tachykinin-expressing FB input neurons. (4) required establishing proper neuropil structures. (5) Loss abolishes upwind orientation to attractive odor while leaving locomotion odor-evoked regulation movement intact. Taken together, our findings establish temporally gene can regulate behavior by developmentally regulating provides first step toward dissection its roles behavior.

Language: Английский

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Wind gates olfaction-driven search states in free flight

Current Biology, Journal Year: 2024, Volume and Issue: 34(19), P. 4397 - 4411.e6

Published: July 26, 2024

Language: Английский

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Fine-grained descending control of steering in walking Drosophila

Cell, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

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