A computational model for angular velocity integration in a locust heading circuit DOI Creative Commons
Kathrin Pabst, Evripidis Gkanias, Barbara Webb

et al.

PLoS Computational Biology, Journal Year: 2024, Volume and Issue: 20(12), P. e1012155 - e1012155

Published: Dec. 20, 2024

Accurate navigation often requires the maintenance of a robust internal estimate heading relative to external surroundings. We present model for angular velocity integration in desert locust circuit, applying concepts from early theoretical work on circuits mammals novel biological context insects. In contrast similar models proposed fruit fly, this circuit uses single 360° direction representation and is updated by neuromodulatory inputs. Our computational was implemented using steady-state firing rate neurons with dynamical synapses. The connectivity constrained data, remaining degrees freedom were optimised machine learning approach yield physiologically plausible neuron activities. demonstrate that noise. signal can be effectively used as input an existing insect goal-directed steering adapted outbound locomotion steady resembles migration. study supports possibility computations orientation may differently neural hardware fly locust.

Language: Английский

Drosophila require both green and UV wavelengths for sun orientation but lack a time-compensated sun compass DOI Creative Commons
Haneal Pae, Jingzhu Liao,

Nicole Yuen

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(19)

Published: Oct. 1, 2024

ABSTRACT Celestial orientation and navigation are performed by many organisms in contexts as diverse migration, nest finding straight-line orientation. The vinegar fly, Drosophila melanogaster, performs menotaxis response to celestial cues during tethered flight can disperse more than 10 km under field conditions. However, we still do not understand how spectral components of pauses impact heading direction flies. To assess individual heading, began testing flies a rotating tether arena using single green LED stimulus. We found that robustly perform fly straight for at least 20 min. Flies maintain their preferred directions after experiencing period darkness or stopping flight, even up 2 h, but reset when the changes position, suggesting treat this stimulus sun. Next, assessed flies' responses UV spot alone paired UV–green – two dots situated 180 deg apart simulate solar antisolar hemispheres. respond much they light; however, stimuli paired, adjust sudden 90 movements, performing sun Lastly, no evidence time-compensated compass moved 15 h−1 6 h. This study demonstrates wavelength influences visual shaping interpretation information execute an appropriate behavioral response.

Language: Английский

Citations

2
The neurobiology of the Monarch butterfly compass DOI Creative Commons
M. Jerome Beetz, Basil el Jundi

Current Opinion in Insect Science, Journal Year: 2023, Volume and Issue: 60, P. 101109 - 101109

Published: Sept. 1, 2023

Monarch butterflies (Danaus plexippus) have become a superb model system to unravel how the tiny insect brain controls an impressive navigation behavior, such as long-distance migration. Moreover, ability compare neural substrate between migratory and non-migratory provides us with attractive specifically study is adapted for We here review our current progress on of spatial orientation in their spectacular annual migration might be controlled by brain. also discuss open research questions, answers which will provide important missing pieces obtain full picture – from perception cues control

Language: Английский

Citations

4
Monarch butterflies memorize the spatial location of a food source DOI Open Access

M. Marcel Konnerth,

James J. Foster, Basil el Jundi

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(2013)

Published: Dec. 20, 2023

Spatial memory helps animals to navigate familiar environments. In insects, spatial has extensively been studied in central place foragers such as ants and bees. However, if butterflies memorize a location remains unclear. Here, we conducted behavioural experiments test whether monarch (Danaus plexippus) can remember retrieve the of food source. We placed several visually identical feeders flight cage, with only one feeder providing sucrose solution. Across multiple days, individual predominantly visited rewarding feeder. Next, displaced salient landmark close which visual cue used relocate While occasional displacements were ignored by did not affect their decisions, systematic displacement both demonstrated that associated feeder's position. Altogether, show consolidate context foraging.

Language: Английский

Citations

4
Modular switches shift monarch butterfly migratory flight behavior at their Mexican overwintering sites DOI Creative Commons
Delbert A. Green,

Sean Polidori,

Samuel M. Stratton

et al.

iScience, Journal Year: 2024, Volume and Issue: 27(3), P. 109063 - 109063

Published: Feb. 2, 2024

Eastern North American migratory monarch butterflies exhibit behavioral states in fall and spring characterized by sun-dependent oriented flight. However, it is unclear how monarchs transition between these at their overwintering site. Using a modified Mouritsen-Frost flight simulator, we confirm individual directionality compass-based orientation (leading to group orientation) migrants, also uncover sustained propensity direction-based reinforcement as distinctly traits. By testing Mexican sites, show that reduced for lose directionality, leading the loss of group-level orientation. Overwintering fliers orient axially time-of-day dependent manner, which may indicate local versus long-distance directional heading. These results support model behavior modular, state-dependent switches control are highly dynamic controlled season- location-dependent manners.

Language: Английский

Citations

1
Building egocentric models of local space from retinal input DOI Creative Commons
Dylan M. Martins,

Joy M Manda,

Michael J. Goard

et al.

Current Biology, Journal Year: 2024, Volume and Issue: 34(23), P. R1185 - R1202

Published: Dec. 1, 2024

Language: Английский

Citations

1
A neural circuit for navigation keeps flies on target DOI
Katherine I. Nagel

Nature, Journal Year: 2024, Volume and Issue: 626(8000), P. 718 - 720

Published: Feb. 7, 2024

Language: Английский

Citations

0
Is this scenery worth exploring? Insight into the visual encoding of navigating ants. DOI Creative Commons
Léo Clément, Sebastian Schwarz,

Blandine Mahot‐Castaing

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 29, 2024

Abstract Solitary foraging insects like desert ants rely heavily on vision for navigation. While can learn visual scenes, it is unclear what cues they use to decide if a scene worth exploring at the first place. To investigate this, we recorded motor behavior of Cataglyphis velox navigating in virtual reality set-up and measured their lateral oscillations response various unfamiliar scenes under both closed-loop open-loop conditions. In naturalistic-looking panorama, display regular as observed outdoors, allowing them efficiently scan scenery. Manipulations environment revealed distinct functions served by dynamic static cues. Dynamic cues, mainly rotational optic flow, regulated amplitude but not regularity. Conversely, had little impact were essential producing oscillations. Regularity decreased with only horizontal, vertical or no edges was restored edge types together. The actual number edges, pattern heterogeneity across azimuths, light intensity relative elevation brighter regions did affect We conclude that simple functional heuristic determine world exploring, relying presence least two different orientations scene. Summary statement Using setup, reveal trigger exploration an simultaneous horizontal necessary sufficient produce

Language: Английский

Citations

0
Polarization Sensitivity in Butterflies DOI
Gregor Belušič, Basil el Jundi

Published: Jan. 1, 2024

Language: Английский

Citations

0
A historical perspective on the insect central complex: Anatomy, development, and function DOI
Valentin Gillet, J.W.A. von Kluge, Rickesh N. Patel

et al.

Molecular Psychology Brain Behavior and Society, Journal Year: 2024, Volume and Issue: 2, P. 19 - 19

Published: Nov. 4, 2024

The central complex (CX), a remarkable brain region at the core of insect behaviors, has been subject extensive research for decades. In this review, we offer comprehensive historical perspective on anatomy, development, and function CX. The CX consists discrete highly structured neuropils found center brain, which are conserved across insects arthropods. developmental processes that shape themselves insects. early research, had shown to receive visual information control motor function. Using increasingly advanced methods throughout years, it become clear is involved in high-level behavioral control, such as vector navigation goal directed orientation. Its numerical simplicity presents rare opportunity study structure-function relationships small brains, gain insights into evolutionary neurobiology, develop novel neuromorphic technologies inspired by brains. Since spatial tasks, uniquely suited detailed understanding computations required these level neural circuits.

Language: Английский

Citations

0
Neuroarchitecture of the Central Complex in the Madeira Cockroach Rhyparobia maderae: Tangential Neurons DOI Creative Commons
Stefanie Jahn, Vanessa Althaus,

Ann‐Katrin Seip

et al.

The Journal of Comparative Neurology, Journal Year: 2024, Volume and Issue: 532(12)

Published: Dec. 1, 2024

Navigating in diverse environments to find food, shelter, or mating partners is an important ability for nearly all animals. Insects have evolved navigational strategies survive challenging and unknown environments. In the insect brain, central complex (CX) plays role spatial orientation directed locomotion. It consists of protocerebral bridge (PB), body with upper (CBU) lower division (CBL), paired noduli (NO). As shown various species, CX integrates multisensory cues, including sky compass signals, wind direction, ego-motion provide goal-directed vector output used steering locomotion flight. While most these data originate from studies on day-active insects, less known about night-active species such as cockroaches. Following our analysis columnar pontine neurons, present study complements investigation cellular architecture Madeira cockroach by analyzing tangential neurons. Based single-cell tracer injections, we further details internal organization distinguished 27 types neuron, three neuron innervating PB, six CBL, 18 CBU. The anterior lip, a brain area flies highly reduced bees, crepine are strongly connected CBU contrast other species. One revealed direct connection between mushroom bodies

Language: Английский

Citations

0