Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Cleavage and Blastulation01:33

Cleavage and Blastulation

45.4K
After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage is a mitotic cell division that does not result in growth. With each round of successive cell division, daughter cells get increasingly smaller.
45.4K
Gastrulation01:56

Gastrulation

57.7K
Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata...
57.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

DEVELOPMENT OF THE SEA-STAR, ASTERINA BATHERI GOTO.

Development, growth & differentiation·2023
Same author

A New Species of Sexually Dimorphic Brittle Star of the Genus Ophiodaphne (Echinodermata: Ophiuroidea).

Zoological science·2017
Same author

Morphological diversity of blastula formation and gastrulation in temnopleurid sea urchins.

Biology open·2016
Same author

Reproductive behaviors of the sexually dimorphic brittle star Ophiodaphne formata (Koehler, 1905) (Echinodermata: Ophiuroidea).

Zoological science·2013
Same author

Life cycle of the multiarmed sea star Coscinasterias acutispina (Stimpson, 1862) in laboratory culture: sexual and asexual reproductive pathways.

Zoological science·2011
Same author

Functional evolution of Ets in echinoderms with focus on the evolution of echinoderm larval skeletons.

Development genes and evolution·2010

Related Experiment Video

Updated: Jul 27, 2025

Ablation of a Single Cell From Eight-cell Embryos of the Amphipod Crustacean Parhyale hawaiensis
10:55

Ablation of a Single Cell From Eight-cell Embryos of the Amphipod Crustacean Parhyale hawaiensis

Published on: March 16, 2014

12.6K

WRINKLED BLASTULA OF THE SEA-STAR, ASTERINA MINOR HAYASHI.

Mieko Komatsu1

  • 1Department of Biology, Toyama University, Toyama 930, Japan.

Development, Growth & Differentiation
|June 7, 2023
PubMed
Summary
This summary is machine-generated.

Embryonic development in Asterina minor involves internal structural changes during the wrinkled blastula stage. Blastomeres form invaginations that fill the blastocoel before gastrulation, marking a key developmental phase.

More Related Videos

Processing Embryo, Eggshell, and Fungal Culture for Scanning Electron Microscopy
09:15

Processing Embryo, Eggshell, and Fungal Culture for Scanning Electron Microscopy

Published on: August 16, 2019

9.5K
Morphometric Protocol for the Objective Assessment of Blastocyst Behavior During Vitrification and Warming Steps
08:28

Morphometric Protocol for the Objective Assessment of Blastocyst Behavior During Vitrification and Warming Steps

Published on: February 28, 2019

8.8K

Related Experiment Videos

Last Updated: Jul 27, 2025

Ablation of a Single Cell From Eight-cell Embryos of the Amphipod Crustacean Parhyale hawaiensis
10:55

Ablation of a Single Cell From Eight-cell Embryos of the Amphipod Crustacean Parhyale hawaiensis

Published on: March 16, 2014

12.6K
Processing Embryo, Eggshell, and Fungal Culture for Scanning Electron Microscopy
09:15

Processing Embryo, Eggshell, and Fungal Culture for Scanning Electron Microscopy

Published on: August 16, 2019

9.5K
Morphometric Protocol for the Objective Assessment of Blastocyst Behavior During Vitrification and Warming Steps
08:28

Morphometric Protocol for the Objective Assessment of Blastocyst Behavior During Vitrification and Warming Steps

Published on: February 28, 2019

8.8K

Area of Science:

  • Marine biology
  • Developmental biology
  • Embryology

Background:

  • The wrinkled blastula stage in Asterina minor embryos is a critical period.
  • Understanding internal structural changes is key to deciphering early developmental processes.

Purpose of the Study:

  • To document the internal structural transformations occurring during the wrinkled blastula stage of Asterina minor embryos.
  • To elucidate the dynamic changes in blastomere behavior and invagination formation.

Main Methods:

  • Observation of naturally raised Asterina minor embryos.
  • Detailed monitoring of internal structures during the wrinkled blastula phase.
  • Time-lapse analysis of blastomere behavior and invagination development.

Main Results:

  • Eight hours post-spawning, surface blastomeres detach into the blastocoel, initiating invaginations.
  • Invaginations develop and fill the blastocoel within 4.5 hours of wrinkling onset.
  • Invaginations decrease in complexity as gastrulation proceeds, with the stage concluding 11.5 hours later.

Conclusions:

  • The wrinkled blastula stage is characterized by dynamic internal remodeling involving blastomere delamination and extensive invagination formation.
  • Gastrulation initiates and progresses concurrently with the resolution of these invaginations, highlighting a complex interplay of developmental events.