Microscopical evaluation of neural connectivity between paired stages of Eudiplozoon nipponicum (Monogenea: Diplozoidae)
Language English Country United States Media print
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Cholinesterases analysis MeSH
- Fluorescent Antibody Technique, Indirect veterinary MeSH
- Trematode Infections parasitology veterinary MeSH
- Ectoparasitic Infestations parasitology veterinary MeSH
- Carps parasitology MeSH
- Microscopy, Confocal veterinary MeSH
- Fish Diseases parasitology MeSH
- Nervous System anatomy & histology chemistry enzymology MeSH
- Neuropeptides analysis MeSH
- Platyhelminths anatomy & histology MeSH
- Serotonin analysis MeSH
- Gills parasitology MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Cholinesterases MeSH
- Neuropeptides MeSH
- Serotonin MeSH
Diplozoidae monogeneans am fish-gill ectoparasites comprising 2 individuals fused in so-called permanent copula. This unique situation occurs when 2 larvae (diporpee) make contact on the host gin, such that their union triggers maturation into an individual adult worm. The present study examined paired stages of Eudiplozoon nipponioun microscopicaily to ascertain whether somatic fusion involves neural connectivity between these 2 heterogenic larvae. Neuronal pathways were demonstrated in whole-mount preparations of the worm, using indirect immunocytochemical techniques interfaced with confocal scanning laser microscopy for peptidergic and serotoninergic innervations and enzyme cytochemical methodology and light microscopy for cholinergic component. Elements of the central nervous systems of paired worms are connected by commissures in the region of fusion so that the 2 systems are in structural continuity. Interindividual connections were mast apparent between corresponding ventral nerve cords. All 3 classes of neuronal mediators were identified throughout both central and peripheral connections of the 2 nervous systems. The anatomical complexity and apparent plasticity of the diplozoon nervous system suggest that it has a pivotal role not only in motility, feeding, and reproductive behavious but also in the events of larval pairing and somatic fusion.
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