Nervous system development in the Pacific oyster, Crassostrea gigas (Mollusca: Bivalvia)
Abstract Background Bivalves comprise a large, highly diverse taxon of invertebrate species. Developmental studies of neurogenesis among species of Bivalvia are limited. Due to a lack of neurogenesis information, it is difficult to infer a ground pattern for Bivalvia. To provide more comprehensive m...
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ftdoajarticles:oai:doaj.org/article:dd3d6119c695447180b33e7123733627 2023-05-15T15:58:25+02:00 Nervous system development in the Pacific oyster, Crassostrea gigas (Mollusca: Bivalvia) Olga V. Yurchenko Olga I. Skiteva Elena E. Voronezhskaya Vyacheslav A. Dyachuk 2018-04-01T00:00:00Z https://doi.org/10.1186/s12983-018-0259-8 https://doaj.org/article/dd3d6119c695447180b33e7123733627 EN eng BMC http://link.springer.com/article/10.1186/s12983-018-0259-8 https://doaj.org/toc/1742-9994 doi:10.1186/s12983-018-0259-8 1742-9994 https://doaj.org/article/dd3d6119c695447180b33e7123733627 Frontiers in Zoology, Vol 15, Iss 1, Pp 1-21 (2018) Mollusca Larvae Neurogenesis Evolution Serotonin FMRFamide Zoology QL1-991 article 2018 ftdoajarticles https://doi.org/10.1186/s12983-018-0259-8 2022-12-31T09:41:12Z Abstract Background Bivalves comprise a large, highly diverse taxon of invertebrate species. Developmental studies of neurogenesis among species of Bivalvia are limited. Due to a lack of neurogenesis information, it is difficult to infer a ground pattern for Bivalvia. To provide more comprehensive morphogenetic data on bivalve molluscs and relationships among molluscan clades, we investigated neurogenesis in the Pacific oyster, Crassostrea gigas, from the appearance of the first sensory cells to the formation of the larval ganglionic nervous system by co-immunocytochemistry of the neuronal markers FMRFamide or 5-HT and vesicular acetylcholine transporter (VAChT). Results Neurogenesis begins with the emergence of the apical serotonin-immunoreactive (5-HT-ir) sensory cells and paired sensory posttrochal dorsal and ventral FMRFamide-immunoreactive (FMRFamide-ir) cells at the early trochophore stage. Later, at the early veliger stage, the apical organ (AO) includes 5-HT-ir, FMRFamide-ir, and VAChT-ir cells. At the same stage, VAChT-ir cells appear in the posterior region of larvae and send axons towards the AO. Thus, FMRFamide-ir neurites and VAChT-ir processes form scaffolds for longitudinal neurite bundles develop into the paired ventral nerve cords (VNC). Later-appearing axons from the AO/CG neurons join the neurite bundles comprising the VNC. All larval ganglia appear along the VNC as paired or fused (epiathroid) clusters in late veliger and pediveliger larvae. We observed the transformation of the AO into the cerebral ganglia, which abundantly innervated the velum, and the transformation of ventral neurons into the pedal ganglia, innervating the foot, gills, and anterior adductor muscle. The visceral ganglia appear last in the pediveliger oyster and innervate the visceral mass and posterior adductor of premetamorphic larvae. In addition, a local FMRFamide-ir network was detected in the digestive system of pediveliger larvae. We identified VAChT-ir nervous elements in oyster larvae, which have not been observed ... Article in Journal/Newspaper Crassostrea gigas Pacific oyster Directory of Open Access Journals: DOAJ Articles Pacific Frontiers in Zoology 15 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Mollusca Larvae Neurogenesis Evolution Serotonin FMRFamide Zoology QL1-991 |
spellingShingle |
Mollusca Larvae Neurogenesis Evolution Serotonin FMRFamide Zoology QL1-991 Olga V. Yurchenko Olga I. Skiteva Elena E. Voronezhskaya Vyacheslav A. Dyachuk Nervous system development in the Pacific oyster, Crassostrea gigas (Mollusca: Bivalvia) |
topic_facet |
Mollusca Larvae Neurogenesis Evolution Serotonin FMRFamide Zoology QL1-991 |
description |
Abstract Background Bivalves comprise a large, highly diverse taxon of invertebrate species. Developmental studies of neurogenesis among species of Bivalvia are limited. Due to a lack of neurogenesis information, it is difficult to infer a ground pattern for Bivalvia. To provide more comprehensive morphogenetic data on bivalve molluscs and relationships among molluscan clades, we investigated neurogenesis in the Pacific oyster, Crassostrea gigas, from the appearance of the first sensory cells to the formation of the larval ganglionic nervous system by co-immunocytochemistry of the neuronal markers FMRFamide or 5-HT and vesicular acetylcholine transporter (VAChT). Results Neurogenesis begins with the emergence of the apical serotonin-immunoreactive (5-HT-ir) sensory cells and paired sensory posttrochal dorsal and ventral FMRFamide-immunoreactive (FMRFamide-ir) cells at the early trochophore stage. Later, at the early veliger stage, the apical organ (AO) includes 5-HT-ir, FMRFamide-ir, and VAChT-ir cells. At the same stage, VAChT-ir cells appear in the posterior region of larvae and send axons towards the AO. Thus, FMRFamide-ir neurites and VAChT-ir processes form scaffolds for longitudinal neurite bundles develop into the paired ventral nerve cords (VNC). Later-appearing axons from the AO/CG neurons join the neurite bundles comprising the VNC. All larval ganglia appear along the VNC as paired or fused (epiathroid) clusters in late veliger and pediveliger larvae. We observed the transformation of the AO into the cerebral ganglia, which abundantly innervated the velum, and the transformation of ventral neurons into the pedal ganglia, innervating the foot, gills, and anterior adductor muscle. The visceral ganglia appear last in the pediveliger oyster and innervate the visceral mass and posterior adductor of premetamorphic larvae. In addition, a local FMRFamide-ir network was detected in the digestive system of pediveliger larvae. We identified VAChT-ir nervous elements in oyster larvae, which have not been observed ... |
format |
Article in Journal/Newspaper |
author |
Olga V. Yurchenko Olga I. Skiteva Elena E. Voronezhskaya Vyacheslav A. Dyachuk |
author_facet |
Olga V. Yurchenko Olga I. Skiteva Elena E. Voronezhskaya Vyacheslav A. Dyachuk |
author_sort |
Olga V. Yurchenko |
title |
Nervous system development in the Pacific oyster, Crassostrea gigas (Mollusca: Bivalvia) |
title_short |
Nervous system development in the Pacific oyster, Crassostrea gigas (Mollusca: Bivalvia) |
title_full |
Nervous system development in the Pacific oyster, Crassostrea gigas (Mollusca: Bivalvia) |
title_fullStr |
Nervous system development in the Pacific oyster, Crassostrea gigas (Mollusca: Bivalvia) |
title_full_unstemmed |
Nervous system development in the Pacific oyster, Crassostrea gigas (Mollusca: Bivalvia) |
title_sort |
nervous system development in the pacific oyster, crassostrea gigas (mollusca: bivalvia) |
publisher |
BMC |
publishDate |
2018 |
url |
https://doi.org/10.1186/s12983-018-0259-8 https://doaj.org/article/dd3d6119c695447180b33e7123733627 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
Frontiers in Zoology, Vol 15, Iss 1, Pp 1-21 (2018) |
op_relation |
http://link.springer.com/article/10.1186/s12983-018-0259-8 https://doaj.org/toc/1742-9994 doi:10.1186/s12983-018-0259-8 1742-9994 https://doaj.org/article/dd3d6119c695447180b33e7123733627 |
op_doi |
https://doi.org/10.1186/s12983-018-0259-8 |
container_title |
Frontiers in Zoology |
container_volume |
15 |
container_issue |
1 |
_version_ |
1766394159660269568 |