Journal ArticleDOI
Subdivisions of hymenopteran mushroom body calyces by their afferent supply
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The data suggest that the many parallel channels of intrinsic neurons may each process different aspects of sensory input information within the mushroom body's calyx, which is particularly large in social Hymenoptera.Abstract:
The mushroom bodies are regions in the insect brain involved in processing complex multimodal information. They are composed of many parallel sets of intrinsic neurons that receive input from and transfer output to extrinsic neurons that connect the mushroom bodies with the surrounding neuropils. Mushroom bodies are particularly large in social Hymenoptera and are thought to be involved in the control of conspicuous orientation, learning, and memory capabilities of these insects. The present account compares the organization of sensory input to the mushroom body's calyx in different Hymenoptera. Tracer and conventional neuronal staining procedures reveal the following anatomic characteristics: The calyx comprises three subdivisions, the lip, collar, and basal ring. The lip receives antennal lobe afferents, and these olfactory input neurons can terminate in two or more segregated zones within the lip. The collar receives visual afferents that are bilateral with equal representation of both eyes in each calyx. Visual inputs provide two to three layers of processes in the collar subdivision. The basal ring is subdivided into two modality-specific zones, one receiving visual, the other antennal lobe input. Some overlap of modality exists between calycal subdivisions and within the basal ring, and the degree of segregation of sensory input within the calyx is species-specific. The data suggest that the many parallel channels of intrinsic neurons may each process different aspects of sensory input information.read more
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Book ChapterDOI
Perception for Action in Insects
Barbara Webb,Jan Wessnitzer +1 more
TL;DR: This work introduces recent approaches using active perception, dynamical systems theory, action-based agent architectures and consideration of the role of predictive loops to insect behaviour and neurophysiology, and proposes an insect brain control architecture for robotics.
Dissertation
Temperature effects on the development in the solitary bee Osmia bicornis (Hymenoptera, Megachilidae) - Development time, brain microstructure, and cognitive abilities
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Journal ArticleDOI
Sublethal doses of fipronil intensify synapsin immunostaining in Atta sexdens rubropilosa (Hymenoptera: Formicidae) brains
Priscila Cintra-Socolowski,Thaisa Cristina Roat,Roberta Cornélio Ferreira Nocelli,Pablo Henrique Nunes,Rafael A. Ferreira,Osmar Malaspina,Odair Correa Bueno +6 more
TL;DR: It is concluded that sublethal doses of the insecticide fipronil intensified synapsin immunostaining, suggesting an increased release of neurotransmitters, which may be linked to neurotoxicity and overexcitation.
Journal ArticleDOI
Not all dytiscidae have poorly developed mushroom bodies: The enigma of Cybister lateralimarginalis
TL;DR: The majority of diving beetles studied has completely differentiated but poorly developed mushroom bodies, but Cybister lateralimarginalis makes an amazing exception and comprises numerous Kenyon cells, large calyces, and a peduncular apparatus of a complicated structure.
References
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The dance language and orientation of bees
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The Insect Societies
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Journal ArticleDOI
Associative odor learning in Drosophila abolished by chemical ablation of mushroom bodies
JS de Belle,Martin Heisenberg +1 more
TL;DR: The results demonstrate that MBs mediate associative odor learning in flies, and that adult flies developing without MBs are unable to perform in a classical conditioning paradigm that tests associative learning of odor cues and electric shock.