Daphnia longicephala neuropeptides: Morphological description of crustacean cardioactive peptide (CCAP) and periviscerokinins in the Ctenodaphnia central nervous system

Weiss, Linda C.; Laforsch, Christian; Ioannidou, Ioanna; Herbert, Z.; Tollrian, Ralph

doi:10.1016/j.npep.2014.06.003

Cited by 5 publications

(3 citation statements)

References 41 publications

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“…In L. vannamei , CCAP expression was highest in the intestine, followed by the brain (Chen et al ). In Daphnia longicephala , CCAP is expressed in the central nervous system (Weiss et al ). Similarly, in R. prolixus , CCAP expression was observed in the central nervous system but not in the salivary glands or gut (Lee et al ).…”

Section: Discussionmentioning

confidence: 99%

Molecular Cloning, Characterization, and Expression of Crustacean Cardioactive Peptide in Oriental River Prawn, Macrobrachium nipponense, during Acute Hypoxia and Reoxygenation

Shan

Qiao

et al. 2018

J World Aquaculture Soc

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A full‐length complementary DNA of the crustacean cardioactive peptide (CCAP) was cloned from the eyestalk of the oriental river prawn, Macrobrachium nipponense, and named Mn‐CCAP. Experimental treatment was set to decrease dissolved oxygen levels and generate hypoxic culture conditions. The Mn‐CCAP expression profile was different in the brain and eyestalk. Results suggested Mn‐CCAP responds strongly to hypoxia‐induced oxidative stress. Different expression profiles in the brain and eyestalk indicate that these two tissues may respond in different ways to hypoxia.

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Section: Discussionmentioning

confidence: 99%

Molecular Cloning, Characterization, and Expression of Crustacean Cardioactive Peptide in Oriental River Prawn, Macrobrachium nipponense, during Acute Hypoxia and Reoxygenation

Shan

Qiao

et al. 2018

J World Aquaculture Soc

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“…The central nervous system in the water fleas and other lower crustaceans consists of the brain, compound eye, optic ganglia, and thoracic nervous system [18, 19, 38]. To visualize neuropils, neurosecretory somata, and neurotransmitter-producing neurons, including histaminergic [18], peptidergic [39], and dopaminergic neurons [17], immunostaining is commonly used. However, we know much less about the peripheral nervous system in these model species, especially the gut innervation, and no sensory neurons in the gut have been visualized in Daphnia [18].…”

Section: Discussionmentioning

confidence: 99%

Microbiota-dependent and independent production of L-dopa in the gut of Daphnia magna

El-Shehawy

Luecke-Johansson

Ribbenstedt

et al. 2021

Preprint

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The host-microbiome interactions are essential for the physiological and ecological performance of the host, yet these interactions are challenging to identify. Neurotransmitters are commonly implicated in these interactions, but we know very little about the mechanisms of their involvement, especially in invertebrates. Here, we report a peripheral Catecholamine (CA) pathway involving the gut microbiome of the model species Daphnia magna. We demonstrate that: (1) tyrosine hydroxylase and dopa decarboxylase enzymes are present in the gut wall; (2) DOPA decarboxylase gene is expressed in the gut by the host, and its expression follows the molt cycle peaking after ecdysis; (3) biologically active L-Dopa, but not Dopamine, is present in the gut lumen; and (4) gut bacteria produce L-Dopa in a concentration-dependent manner when provided L-Tyrosine as a substrate. Impinging on gut bacteria involvement in host physiology and ecologically relevant traits, we suggest L-Dopa as a communication agent in the host-microbiome interactions in daphnids and, possibly, other crustaceans.

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“…The work identified several PDH-neurons in two species of Daphnia and provided for the first time clear-cut evidence for endogenous circadian clock features of two distinct PDH-neurons that are putative homologues of established biological clock neurons in Drosophila melanogaster (Strauß et al 2011). Another recent work used antibodies against crustacean cardioactive peptide and cockroach periviscerokinins to demonstrate the existence of peptidergic neurons in the brain and ventral nerve cord (VNC) of a ctenodaphnid species (Weiss et al 2014). Furthermore, the first immunohistochemical attempts to localise histamine in the nervous system of Daphnia pulex showed a complex distribution pattern of this important neurotransmitter throughout the CNS of this species; the study also provided physiological evidence for a role of histamine as a mediator of phototactic behaviour (McCoole et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Neuroanatomy of the optic ganglia and central brain of the water flea Daphnia magna (Crustacea, Cladocera)

2015

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We reveal the neuroanatomy of the optic ganglia and central brain in the water flea Daphnia magna by use of classical neuroanatomical techniques such as semi-thin sectioning and neuronal backfilling, as well as immunohistochemical markers for synapsins, various neuropeptides and the neurotransmitter histamine. We provide structural details of distinct neuropiles, tracts and commissures, many of which were previously undescribed. We analyse morphological details of most neuron types, which allow for unravelling the connectivities between various substructural parts of the optic ganglia and the central brain and of ascending and descending connections with the ventral nerve cord. We identify 5 allatostatin-A-like, 13 FMRFamide-like and 5 tachykinin-like neuropeptidergic neuron types and 6 histamine-immunoreactive neuron types. In addition, novel aspects of several known pigment-dispersing hormone-immunoreactive neurons are re-examined. We analyse primary and putative secondary olfactory pathways and neuronal elements of the water flea central complex, which displays both insect- and decapod crustacean-like features, such as the protocerebral bridge, central body and lateral accessory lobes. Phylogenetic aspects based upon structural comparisons are discussed as well as functional implications envisaging more specific future analyses of ecotoxicological and endocrine disrupting environmental chemicals.

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Daphnia longicephala neuropeptides: Morphological description of crustacean cardioactive peptide (CCAP) and periviscerokinins in the Ctenodaphnia central nervous system

Cited by 5 publications

References 41 publications

Molecular Cloning, Characterization, and Expression of Crustacean Cardioactive Peptide in Oriental River Prawn, Macrobrachium nipponense, during Acute Hypoxia and Reoxygenation

Molecular Cloning, Characterization, and Expression of Crustacean Cardioactive Peptide in Oriental River Prawn, Macrobrachium nipponense, during Acute Hypoxia and Reoxygenation

Microbiota-dependent and independent production of L-dopa in the gut of Daphnia magna

Neuroanatomy of the optic ganglia and central brain of the water flea Daphnia magna (Crustacea, Cladocera)

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