Structure of the Brain and Medulla Terminalis of the Spiny Lobster Panulirus Argus and the Crayfish Procambarus Clarkii, With an Emphasis on Olfactory Centers

Blaustein, David N.; Derby, Charles D.; Simmons, Robert B.; Beall, Arthur C.

doi:10.1163/193724088x00341

Cited by 14 publications

(2 citation statements)

References 32 publications

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“…as "interglomerular fibers" (Blaustein et al, 1988), and massive lateral connections were also described in hermit crabs Coenobata clypeatus (Polanska et al, 2020), in which they express allatostatin A-like IR . In spiny lobsters, some of the interglomerular fibers are GABAergic and hence were suggested to modulate input from OSNs and control the activity within the network .…”

Section: Neurochemistry Of the Crustacean Central Olfactory Pathway: ...mentioning

confidence: 88%

“…This trajectory of evolutionary transformation seems to coincide with a transformation of intraglomerular complexity (Figure 12). In decapod crustaceans with columnar cones such as crayfish (Blaustein et al, 1988;Sandeman & Luff, 1973), spiny lobsters (Blaustein et al, 1988;Schmidt & Ache, 1992;1997), and hermit crabs (Harzsch & Hansson, 2008;Krieger et al, 2010;Polanska et al, 2020;, it has been well documented that the glomeruli are regionalized in three longitudinal compartments, cap, subcap, and base, and further in concentric compartments. The glomerular cap region primarily represents an input compartment (axons of OSNs), whereas in the base, neurites of the PNs assemble as output Speleonectes tulumensis (Harzsch, unpublished).…”

Section: P Hawaiensismentioning

confidence: 99%

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Neurochemical diversity in the central olfactory pathway of the crustacean Parhyale hawaiensis (Amphipoda): evolutionary implications

Kümmerlen

Raspe

Harzsch

2023

J of Comparative Neurology

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In mandibulate arthropods, the primary olfactory centers, termed olfactory lobes in crustaceans, are typically organized in distinct fields of dense synaptic neuropils called olfactory glomeruli. In addition to olfactory sensory neuron terminals and their postsynaptic efferents, the glomeruli are innervated by diverse neurochemically distinctive interneurons. The functional morphology of the olfactory glomeruli is understudied in crustaceans compared with insects and even less well understood and described in a particular crustacean subgroup, the Peracarida, which embrace, for example, Amphipoda and Isopoda. Using immunohistochemistry combined with confocal laser scanning microscopy, we analyzed the neurochemistry of the olfactory pathway in the amphipod Parhyale hawaiensis. We localized the biogenic amines serotonin and histamine as well as the neuropeptides RFamide, allatostatin, orcokinin, and SIFamide.As for other classical neurotransmitters, we stained for γ-aminobutyric acid and glutamate decarboxylase and used choline acetyltransferase as indicator for acetylcholine.Our study is another step in understanding principles of olfactory processing in crustaceans and can serve as a basis for understanding evolutionary transformations of crustacean olfactory systems.

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Section: Neurochemistry Of the Crustacean Central Olfactory Pathway: ...mentioning

confidence: 88%

Section: P Hawaiensismentioning

confidence: 99%

Neurochemical diversity in the central olfactory pathway of the crustacean Parhyale hawaiensis (Amphipoda): evolutionary implications

Kümmerlen

Raspe

Harzsch

2023

J of Comparative Neurology

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Light-evoked walking in crayfish: Behavioral and neuronal responses triggered by the caudal photoreceptor

Simon

Edwards

1990

J Comp Physiol A

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The caudal photoreceptors (CPRs) of crayfish (Procambarus clarkii) can trigger walking and abdominal movements by their response to light.1. In a restrained, inverted crayfish, illumination of A6 evoked a CPR discharge followed by leg movements and bursting from the abdominal tonic flexor (TF) motoneurons. Intracellular electrical stimulation of a single CPR at high frequency (80 Hz) evoked similar responses.2. Responses only occurred when a single CPR axon was driven at 60 Hz or more and outlasted the stimulus.3. CPR stimulation also excites the pattern-initiating network (Moore and Larimer 1987) in the abdomen.4. The axon of the CPR projects from ganglion A6 to the brain. Terminal branches occur in the subesophageal ganglion and the brain. A small descending interneuron is dye-coupled to CPR in the subesophageal ganglion.5. In animals with cut circumesophageal connectives, the CPRs can evoke walking and the abdominal motor pattern.6. The relationship of the abdominal motor pattern to walking is altered by restraint and/or inversion. In freely moving crayfish, the cyclic abdominal motor pattern is only observed with backward walking. In restrained, inverted crayfish, the motor pattern occurs with both forward or backward walking.

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Functional organization of olfactory processing in the accessory lobe of the spiny lobster

1996

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An isolated brain preparation was used to characterize neurons innervating the accessory lobe (AL) of the spiny lobster (Panulirus argus). Four distinct classes of neurons responded to electrical stimulation of the olfactory (antennular) nerve. These cells responded to electrical stimulation with a long and variable latency; they also responded to odor stimulation in a nose-brain preparation. Neurons connecting the AL with the olfactory lobe branched in the central AL layer and selectively innervated olfactory lobe glomeruli. These cells had response latencies which were significantly shorter than those of other AL neurons. Intrinsic AL interneurons were heterogeneous as a population, and most arborized in irregular but circumscribed regions of either the lateral or medial layers. The final class of neurons branched ipsilaterally in the deutocerebral neuropil and bilaterally innervated only a few AL glomeruli. The physiology and morphology of these four classes of neurons confirm an olfactory function for the AL and identify the input and output regions of the lobe. Based on these findings, we propose that the AL processes odor information in the context of higher order multimodal input.Abbreviations: AL accessory lobe 9 DCN deutocerebral neuropil 9 OGT olfactory-globular tract 9 OGTN olfactory-globular tract neuropil " OL olfactory lobe

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Structure of the Brain and Medulla Terminalis of the Spiny Lobster Panulirus Argus and the Crayfish Procambarus Clarkii, With an Emphasis on Olfactory Centers

Cited by 14 publications

References 32 publications

Neurochemical diversity in the central olfactory pathway of the crustacean Parhyale hawaiensis (Amphipoda): evolutionary implications

Neurochemical diversity in the central olfactory pathway of the crustacean Parhyale hawaiensis (Amphipoda): evolutionary implications

Light-evoked walking in crayfish: Behavioral and neuronal responses triggered by the caudal photoreceptor

Functional organization of olfactory processing in the accessory lobe of the spiny lobster

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