scholarly journals Synaptic depression induced by postsynaptic cAMP production in the Drosophila mushroom body calyx

2018 ◽  
Vol 596 (12) ◽  
pp. 2447-2461 ◽  
Author(s):  
Shoma Sato ◽  
Kohei Ueno ◽  
Minoru Saitoe ◽  
Takaomi Sakai
Keyword(s):  
Mushroom Body ◽  
Synaptic Depression ◽  
Camp Production ◽  
Mushroom Body Calyx

Synaptic organization of the mushroom body calyx inDrosophila melanogaster

2002 ◽  
Vol 445 (3) ◽  
pp. 211-226 ◽  
Author(s):  
Kouji Yasuyama ◽  
Ian A. Meinertzhagen ◽  
Friedrich-Wilhelm Schürmann
Keyword(s):  
Mushroom Body ◽  
Synaptic Organization ◽  
Mushroom Body Calyx

Cumulative Effects of Foraging Behavior and Social Dominance on Brain Development in a Facultatively Social Bee (Ceratina australensis)

2015 ◽  
Vol 85 (2) ◽  
pp. 117-124 ◽  
Author(s):  
Sandra M. Rehan ◽  
Susan J. Bulova ◽  
Sean O''Donnell
Keyword(s):  
Brain Development ◽  
Task Performance ◽  
Mushroom Body ◽  
Cumulative Effects ◽  
Body Volume ◽  
Total Brain Volume ◽  
Carpenter Bee ◽  
The Social ◽  
Foraging Experience ◽  
Mushroom Body Calyx

In social insects, both task performance (foraging) and dominance are associated with increased brain investment, particularly in the mushroom bodies. Whether and how these factors interact is unknown. Here we present data on a system where task performance and social behavior can be analyzed simultaneously: the small carpenter bee Ceratina australensis. We show that foraging and dominance have separate and combined cumulative effects on mushroom body calyx investment. Female C. australensis nest solitarily and socially in the same populations at the same time. Social colonies comprise two sisters: the social primary, which monopolizes foraging and reproduction, and the social secondary, which is neither a forager nor reproductive but rather remains at the nest as a guard. We compare the brains of solitary females that forage and reproduce but do not engage in social interactions with those of social individuals while controlling for age, reproductive status, and foraging experience. Mushroom body calyx volume was positively correlated with wing wear, a proxy for foraging experience. We also found that, although total brain volume did not vary among reproductive strategies (solitary vs. social nesters), socially dominant primaries had larger mushroom body calyx volumes (corrected for both brain and body size variation) than solitary females; socially subordinate secondaries (that are neither dominant nor foragers) had the least-developed mushroom body calyces. These data demonstrate that sociality itself does not explain mushroom body volume; however, achieving and maintaining dominance status in a group was associated with mushroom body calyx enlargement. Dominance and foraging effects were cumulative; dominant social primary foragers had larger mushroom body volumes than solitary foragers, and solitary foragers had larger mushroom body volumes than nonforaging social secondary guards. This is the first evidence for cumulative effects on brain development by dominance and task performance.

scholarly journals Circuit reorganization in the Drosophila mushroom body calyx accompanies memory consolidation

2020 ◽  
Author(s):  
Lothar Baltruschat ◽  
Philipp Ranft ◽  
Luigi Prisco ◽  
J. Scott Lauritzen ◽  
André Fiala ◽  
...  
Keyword(s):  
Conditioned Stimulus ◽  
Memory Consolidation ◽  
Mushroom Body ◽  
Structural Changes ◽  
De Novo ◽  
Projection Neurons ◽  
Structural Modifications ◽  
Behavioural Experiments ◽  
The Individual ◽  
Mushroom Body Calyx

SummaryThe capacity of utilizing past experience to guide future action is a fundamental and conserved function of the nervous system. Associative memory formation initiated by the coincident detection of a conditioned stimulus (CS, e.g. odour) and an unconditioned stimulus (US, e.g. sugar reward) can lead to a short-lived memory trace (STM) within distinct circuits [1-5]. Memories can be consolidated into long-term memories (LTM) through processes that are not fully understood, but depend on de-novo protein synthesis [6, 7], require structural modifications within the involved neuronal circuits and might lead to the recruitment of additional ones [8-17]. Compared to modulation of existing connections, the reorganization of circuits affords the unique possibility of sampling for potential new partners [18-20]. Nonetheless, only few examples of rewiring associated with learning have been established thus far [14, 21-24]. Here, we report that memory consolidation is associated with the structural and functional reorganization of an identified circuit in the adult fly brain. The formation and retrieval of olfactory associative memories in Drosophila requires the mushroom body (MB) [25]. We identified the individual synapses of olfactory projection neurons (PNs) that deliver a conditioned odour to the MB and reconstructed the complexity of the microcircuit they form. Combining behavioural experiments with high-resolution microscopy and functional imaging, we demonstrated that the consolidation of appetitive olfactory memories closely correlates with an increase in the number of synaptic complexes formed by the PNs that deliver the conditioned stimulus and their postsynaptic partners. These structural changes result in additional functional synaptic connections.

scholarly journals Neural Correlates of Odor Learning in the Presynaptic Microglomerular Circuitry in the Honeybee Mushroom Body Calyx

eNeuro ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. ENEURO.0128-18.2018 ◽  
Author(s):  
Joachim Haenicke ◽  
Nobuhiro Yamagata ◽  
Hanna Zwaka ◽  
Martin Nawrot ◽  
Randolf Menzel
Keyword(s):  
Mushroom Body ◽  
Neural Correlates ◽  
Odor Learning ◽  
Mushroom Body Calyx

Neuronal Plasticity in the Mushroom‐Body Calyx of Bumble Bee Workers During Early Adult Development

2019 ◽  
Vol 79 (4) ◽  
pp. 287-302 ◽  
Author(s):  
Nadine Kraft ◽  
Johannes Spaethe ◽  
Wolfgang Rössler ◽  
Claudia Groh
Keyword(s):  
Adult Development ◽  
Neuronal Plasticity ◽  
Mushroom Body ◽  
Bumble Bee ◽  
Mushroom Body Calyx

Age-related plasticity in the synaptic ultrastructure of neurons in the mushroom body calyx of the adult honeybee Apis mellifera

2012 ◽  
Vol 520 (15) ◽  
pp. 3509-3527 ◽  
Author(s):  
Claudia Groh ◽  
Zhiyuan Lu ◽  
Ian A. Meinertzhagen ◽  
Wolfgang Rössler
Keyword(s):  
Apis Mellifera ◽  
Mushroom Body ◽  
Age Related ◽  
Synaptic Ultrastructure ◽  
Mushroom Body Calyx

scholarly journals Stereotypic and random patterns of connectivity in the larval mushroom body calyx of Drosophila

2005 ◽  
Vol 102 (52) ◽  
pp. 19027-19032 ◽  
Author(s):  
L. M. Masuda-Nakagawa ◽  
N. K. Tanaka ◽  
C. J. O'Kane
Keyword(s):  
Mushroom Body ◽  
Random Patterns ◽  
Mushroom Body Calyx

Different classes of input and output neurons reveal new features in microglomeruli of the adult Drosophila mushroom body calyx

2012 ◽  
Vol 520 (10) ◽  
pp. 2185-2201 ◽  
Author(s):  
Nancy J. Butcher ◽  
Anja B. Friedrich ◽  
Zhiyuan Lu ◽  
Hiromu Tanimoto ◽  
Ian A. Meinertzhagen
Keyword(s):  
Mushroom Body ◽  
Input And Output ◽  
Output Neurons ◽  
Mushroom Body Calyx ◽  
Adult Drosophila

scholarly journals Convergence of monosynaptic and polysynaptic sensory paths onto common motor outputs in a Drosophila feeding connectome

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Anton Miroschnikow ◽  
Philipp Schlegel ◽  
Andreas Schoofs ◽  
Sebastian Hueckesfeld ◽  
Feng Li ◽  
...  
Keyword(s):  
Food Intake ◽  
Mushroom Body ◽  
Sensory Inputs ◽  
Input And Output ◽  
Drosophila Larvae ◽  
Output Neurons ◽  
Overlapping Domains ◽  
Motor Outputs ◽  
Neuroendocrine Neurons ◽  
Mushroom Body Calyx

We reconstructed, from a whole CNS EM volume, the synaptic map of input and output neurons that underlie food intake behavior of Drosophila larvae. Input neurons originate from enteric, pharyngeal and external sensory organs and converge onto seven distinct sensory synaptic compartments within the CNS. Output neurons consist of feeding motor, serotonergic modulatory and neuroendocrine neurons. Monosynaptic connections from a set of sensory synaptic compartments cover the motor, modulatory and neuroendocrine targets in overlapping domains. Polysynaptic routes are superimposed on top of monosynaptic connections, resulting in divergent sensory paths that converge on common outputs. A completely different set of sensory compartments is connected to the mushroom body calyx. The mushroom body output neurons are connected to interneurons that directly target the feeding output neurons. Our results illustrate a circuit architecture in which monosynaptic and multisynaptic connections from sensory inputs traverse onto output neurons via a series of converging paths.

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