Encoding and control of orientation to airflow by a set of Drosophila fan-shaped body neurons

Currier, Timothy A.; Matheson, Andrew M. M.; Nagel, Katherine I.

doi:10.7554/elife.61510

Cited by 48 publications

(80 citation statements)

References 71 publications

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“…Several recent functional studies have implicated the NO as centers that relay idiothetic self-motion cues, including translational optic flow ( Lu et al, 2020 ; Lyu et al, 2020 ; Stone et al, 2017 ), rotational angular velocity ( Green et al, 2017 ; Turner-Evans et al, 2017 ), and wind direction ( Currier et al, 2020 ) to other regions within the CX. So far three neuron types that innervate the NO have been shown to facilitate the encoding of self-motion cues, with anatomical homologues having been identified across insect species ( Heinze and Homberg, 2008 ; Heinze et al, 2013 ; Wolff et al, 2015 ; Stone et al, 2017 ; El Jundi et al, 2018 ; von Hadeln et al, 2020 ; Hensgen et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

A projectome of the bumblebee central complex

Sayre¹,

Templin²,

Chavez

et al. 2021

eLife

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Insects have evolved diverse and remarkable strategies for navigating in various ecologies all over the world. Regardless of species, insects share the presence of a group of morphologically conserved neuropils known collectively as the central complex (CX). The CX is a navigational center, involved in sensory integration and coordinated motor activity. Despite the fact that our understanding of navigational behavior comes predominantly from ants and bees, most of what we know about the underlying neural circuitry of such behavior comes from work in fruit flies. Here we aim to close this gap, by providing the first comprehensive map of all major columnar neurons and their projection patterns in the CX of a bee. We find numerous components of the circuit that appear to be highly conserved between the fly and the bee, but also highlight several key differences which are likely to have important functional rami1cations.

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Section: Discussionmentioning

confidence: 99%

A projectome of the bumblebee central complex

Sayre¹,

Templin²,

Chavez

et al. 2021

eLife

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“…cephalotes (Arganda et al, 2020), we assumed greater investment in neuropils such as the MBs and ALs would be required to process more diverse stimulus arrays and coordinate sensorimotor processes. For example, tasks such as leaf selection, cutting, and transport involve olfactory discrimination, proprioception and mechanosensory and muscular systems to control the mandibles, appendages, head position, and direction of movement (Currier et al, 2020;Green et al, 2019;Khalife et al, 2018), whereas other tasks differ substantially in these needs. Estimates for task performance frequency were based on published results of studies of worker size-related behavior (references listed in Table 1) validated by unpublished data (Muratore et al, in prep.…”

Section: Behavioral Performance Demands and Estimates Of Required Neuroanatomical Supportmentioning

confidence: 99%

“…Greater investment in the CX may represent circuitry to enable multisensory navigation within dark three-dimensional labyrinthal fungal comb chambers. Minims mainly perform fungal-gardening tasks that likely rely on non-visual navigational strategies, perhaps involving CX circuitry (Currier et al, 2020;Green et al, 2019;Le Moël et al, 2019;Mamiya et al, 2018;Pisokas et al, 2020;Shiozaki et al, 2020;Sun et al, 2020).…”

Section: Additional Compartmental Allometriesmentioning

confidence: 99%

“…Ants, as exemplars of insect sociality, form complex societies that may be characterized by striking patterns of task specialization associated with ergonomic division of labor (Beshers & Fewell, 2001;Hölldobler & Wilson, 1990) and worker size-related variation in innate task routines and/or cognitive capabilities. The brains of workers are composed of functionally specialized compartments involved in visual and olfactory processing (optic lobes [OL] and antennal lobes [AL], respectively), higher-order processing, learning, and memory (mushroom bodies [MB]), navigation, orientation, and movement (central complex [CX], also associated with the MBs) (Currier et al, 2020;Green et al, 2019;Kamhi et al, 2020;Le Moël et al, 2019;Pisokas et al, 2020;Sun et al, 2020), and mandibular control and gustation (the suboesophageal zone [SEZ]). The remainder of the central brain (ROCB) is composed of several protocerebral compartments thought to integrate sensory information with the CX (Currier et al, 2020;Green et al, 2019;Strausfeld, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…The brains of workers are composed of functionally specialized compartments involved in visual and olfactory processing (optic lobes [OL] and antennal lobes [AL], respectively), higher-order processing, learning, and memory (mushroom bodies [MB]), navigation, orientation, and movement (central complex [CX], also associated with the MBs) (Currier et al, 2020;Green et al, 2019;Kamhi et al, 2020;Le Moël et al, 2019;Pisokas et al, 2020;Sun et al, 2020), and mandibular control and gustation (the suboesophageal zone [SEZ]). The remainder of the central brain (ROCB) is composed of several protocerebral compartments thought to integrate sensory information with the CX (Currier et al, 2020;Green et al, 2019;Strausfeld, 2012). Although brain size may be limited as a predictor of computational power and cognitive capacity (Chittka & Niven, 2009;Muscedere et al, 2014), the volumes and structural elaboration of visual and olfactory neuropils and the MBs in ants are considered to correlate with processing capability and have ethological significance (Farris, 2011;Gronenberg, 2001).…”

Section: Introductionmentioning

confidence: 99%

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Behavioral performance requirements for division of labor influence adaptive brain mosaicism in a socially complex ant

Muratore

Traniello

2021

Preprint

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Brain evolution is hypothesized to be driven by neuroarchitectural requirements for behavioral performance. Assessments of such needs should be informed by the nature of sensory and motor processes underpinning behavior. We developed a novel metric to estimate the relative neuroanatomical investments required to perform tasks varying in sensorimotor and processing demands across polymorphic and polyethic workers of the leafcutter ant Atta cephalotes and quantified brain size and structure to examine their correspondence with our computational approximations. Investment in multi-sensory integration and motor requirements for task performance was estimated to be greatest for media workers whose leaf-harvesting repertoire involves the most diverse and demanding sensory and motor processes, including plant discrimination, leaf cutting, and fragment transportation. Volumetric analysis of confocal brain images revealed that absolute brain size increased with worker size and compartmental scaling allometries among functionally specialized brain compartments differed among polymorphic workers. The mushroom bodies, centers of sensory integration and learning, and the antennal lobes, which process olfactory inputs, were significantly larger in medias than in minim workers (fungal gardeners) and major workers ("soldiers"), which had lower estimated task-related neural demands. Minims had a proportionally larger central complex, perhaps to control navigation in subterranean fungal garden chambers. These results indicate that variation in task performance requirements has selected for adaptive variation in brain size and mosaic scaling.

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Organization and neural connections of the lateral complex in the brain of the desert locust

Hensgen

Göthe

Jahn

et al. 2021

J of Comparative Neurology

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The lateral complexes (LXs) are bilaterally paired neuropils in the insect brain that mediate communication between the central complex (CX), a brain center controlling spatial orientation, various sensory processing areas, and thoracic motor centers that execute locomotion. The LX of the desert locust consists of the lateral accessory lobe (LAL), and the medial and lateral bulb. We have analyzed the anatomical organization and the neuronal connections of the LX in the locust, to provide a basis for future functional studies. Reanalyzing the morphology of neurons connecting the CX and the LX revealed likely feedback loops in the sky compass network of the CX via connections in the gall of the LAL and a newly identified neuropil termed ovoid body. In addition, we characterized 16 different types of neuron that connect the LAL with other areas in the brain. Eight types of neuron provide information flow between both LALs, five types are LAL input neurons, and three types are LAL output neurons. Among these are neurons providing input from sensory brain areas such as the lobula and antennal neuropils. Brain regions most often targeted by LAL neurons are the posterior slope, the wedge, and the crepine. Two descending neurons with dendrites in the LAL were identified. Our data support and complement existing knowledge about how the LAL is embedded in the neuronal network involved in processing of sensory information and generation of appropriate behavioral output for goal‐directed locomotion.

show abstract

Encoding and control of orientation to airflow by a set of Drosophila fan-shaped body neurons

Cited by 48 publications

References 71 publications

A projectome of the bumblebee central complex

A projectome of the bumblebee central complex

Behavioral performance requirements for division of labor influence adaptive brain mosaicism in a socially complex ant

Organization and neural connections of the lateral complex in the brain of the desert locust

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