Cited by 83Marine Invertebrate Physiology and EcologyDevelopmental Biology and Gene RegulationPlanarian Biology and Electrostimulation

Embryonic development and metamorphosis of the scyphozoan Aurelia

Yuan, David, Nakanishi, Nagayasu, Jacobs, David K., Hartenstein, Volker·2008·Development Genes and Evolution

Abstract

We investigated the development of Aurelia (Cnidaria, Scyphozoa) during embryogenesis and metamorphosis into a polyp, using antibody markers combined with confocal and transmission electron microscopy. Early embryos form actively proliferating coeloblastulae. Invagination is observed during gastrulation. In the planula, (1) the ectoderm is pseudostratified with densely packed nuclei arranged in a superficial and a deep stratum, (2) the aboral pole consists of elongated ectodermal cells with basally located nuclei forming an apical organ, which is previously only known from anthozoan planulae, (3) endodermal cells are large and highly vacuolated, and (4) FMRFamide-immunoreactive nerve cells are found exclusively in the ectoderm of the aboral region. During metamorphosis into a polyp, cells in the planula endoderm, but not in the ectoderm, become strongly caspase 3 immunoreactive, suggesting that the planula endoderm, in part or in its entirety, undergoes apoptosis during metamorphosis. The polyp endoderm seems to be derived from the planula ectoderm in Aurelia, implicating the occurrence of "secondary" gastrulation during early metamorphosis.

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Crossref · 10.1007/s00427-008-0254-8

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63 of 63 references verified0 citation errors · 0 not checkable

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  • Several studies support a major ectodermal contribution to the gastrodermis of the Aurelia scyphistoma.

    “Notably, several studies have supported a major ectodermal contribution to the gastrodermis of the Aurelia scyphistoma (Gold et al. 2016; Mayorova et al. 2012; Yuan et al. 2008).”
  • In a larva with monociliated cells, such as a cnidarian planula, a deuterostome tornaria or a phoronid actinotroch larva, a sensory-motor neuron must innervate a large number of cells to achieve a sufficiently large motor response.

    “In a larva with monociliated cells, such as a cnidarian planula [54], a deuterostome tornaria [55] or a phoronid actinotroch larva [56] a sensory-motor neuron must innervate a large number of cells to achieve a sufficiently large motor response (e.g. speeding up the larva).”

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Authors
Yuan, D., Nakanishi, N., Jacobs, D. K., & Hartenstein, V.
Affiliations
University of California, Los Angeles (US)
Corresponding author
Hartenstein, Volker
Venue
Development Genes and Evolution
Published
2008-10
Volume
218
Issue
10
Pages
525-539
ISSN
  • 0043-5546 (ISSN-L)
  • 0949-944X
  • 1432-041X
OpenAlex
W2033352040
Cited by
83
References
64
Citations by year
2026: 1 · 2025: 9 · 2024: 6 · 2023: 3 · 2022: 8 · 2021: 4 · 2020: 5 · 2019: 4 · 2018: 3 · 2017: 2 · 2016: 5 · 2015: 6 · 2014: 5 · 2013: 4 · 2012: 3
FWCI
3.82
Type
journal article
Language
en
Open access
closed
Locations
  • Development Genes and Evolution (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Marine Invertebrate Physiology and Ecology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Planarian Biology and Electrostimulation
Keywords
Aurelia, scyphozoan jellyfish, embryonic development, metamorphosis, planula, gastrulation, apoptosis, caspase-3, apical organ, endoderm, ectoderm, polyp development, antibody markers
MeSH terms
Animals, Larva, Metamorphosis, Biological, Models, Biological, Stomach, Blastula, Scyphozoa, Embryonic Development, Cell Proliferation, Gastrulation

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