ArticleBMC evolutionary biology2015
The serotonin-lir nervous system of the Bryozoa (Lophotrochozoa): a general pattern in the Gymnolaemata and implications for lophophore evolution of the phylum.
Article in BMC evolutionary biology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 32 citations in OpenAlex.
- Morphology of ctenostome bryozoans: 5. Sundanella, with description of a new species from the Western Atlantic and the Multiporata concept.Journal of morphology · 2022Article
- A comparative analysis of the nervous system of cheilostome bryozoans.BMC zoology · 2021Article
- Peculiarities of Tentacle Innervation of Flustrellidra hispida and Evolution of Lophophore in Bryozoa.Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections · 2021Article
- First data on the organization of the nervous system in juveniles of Novocrania anomala (Brachiopoda, Craniiformea).Scientific reports · 2020Article
- Key novelties in the evolution of the aquatic colonial phylum Bryozoa: evidence from soft body morphology.Biological reviews of the Cambridge Philosophical Society · 2020Review
- Life in a tube: morphology of the ctenostome bryozoanZoological letters · 2019Article
- Morphology of the bryozoan Cinctipora elegans (Cyclostomata, Cinctiporidae) with first data on its sexual reproduction and the cyclostome neuro-muscular system.BMC evolutionary biology · 2018Article
- The nervous system in the cyclostome bryozoanFrontiers in zoology · 2018Article
- Unity in diversity: a survey of muscular systems of ctenostome Gymnolaemata (Lophotrochozoa, Bryozoa).Frontiers in zoology · 2018Article
- Innervation of the lophophore suggests that the phoronid Phoronis ovalis is a link between phoronids and bryozoans.Scientific reports · 2017Article
- The first data on the innervation of the lophophore in the rhynchonelliform brachiopod Hemithiris psittacea: what is the ground pattern of the lophophore in lophophorates?BMC evolutionary biology · 2017Article
- Distribution of serotonin and FMRF-amide in the nervous system of different zooidal types of cheilostome bryozoa: A case study of Arctonula arctica.Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections · 2016Article
- The nervous system of the lophophore in the ctenostome Amathia gracilis provides insight into the morphology of ancestral ectoprocts and the monophyly of the lophophorates.BMC evolutionary biology · 2016Article
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2 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundSerotonin represents an evolutionary ancient neurotransmitter that is ubiquitously found among animals including the lophotrochozoan phylum Bryozoa, a group of colonial filter-feeders. Comparatively little is known on their nervous system, and data on their serotonin-lir nervous system currently are mostly limited to the basal phylactolaemates. Previous investigations indicated a common ground-pattern of the serotonin-lir nervous system in these animals, but in order to assess this on a larger scale, 21 gymnolaemate species from 21 genera were comparatively analysed herein.
methodsTwenty-one species from 21 gymnolaemate genera were analysed by immunocytochemical stainings and confocal laser scanning microscopy.
resultsIn all species the serotonin-lir signal is concentrated in the cerebral ganglion from where a nerve tract emanates laterally and traverses orally to engulf the foregut. Serotonin-lir perikarya are situated at the base of the tentacles that almost always correspond to the number of tentacles minus two. The oral side in almost all species shows three serotonin-lir perikarya followed by a 'serotonergic gap' that to our knowledge is not reflected in the morphology of the nervous system. Some species show additional serotonin-lir signal in tentacle nerves, visceral innervation and pore complexes. Paludicella articulata is exceptional as it shows signal in the latero-visceral nerves with serotonin-lir perikarya in the esophagus, parts of the tentacle sheath nerves as well as the frontal body wall around the parietal muscle bundles.
conclusionsIn general, the serotonin-lir nervous system in the Bryozoa shows a consistent pattern among its different clades with few deviations. Preliminary data on phylactolaemates suggest the presence of a 'serotonergic gap' similar to gymnolaemates. Both show a subset of oral tentacles and the remaining tentacles in gymnolaemates which correspond to the lateral tentacles of phylactolaemates. The lophophoral concavity lacks serotonin-lir perikarya indicating that due to their larger sizes and increased tentacle number, the horse-shoe shaped arrangement could represent an apomorphy of phylactolaemates.
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