Journal ArticleDOI
Active contraction of starfish oocyte follicle cells after treatment with 1-methyl adenine
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This article is published in Naturwissenschaften.The article was published on 1971-05-01. It has received 29 citations till now. The article focuses on the topics: Oocyte & Starfish.read more
Citations
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Book ChapterDOI
Maturation-Inducing Substance in Starfishes
TL;DR: The mechanism of gamete release and oocyte maturation in starfishes, based on the action of gonad-stimulating substance (GSS) and maturation-inducing substance (MIS), I-methyladenine, is summarized in the chapter.
Book ChapterDOI
Maturation and Fertilization in Starfish Oocytes
Laurent Meijer,Pierre Guerrier +1 more
TL;DR: Sorrow is knowledge; they who know the most Must mourn the deepest o'er the fatal truth; the Tree of knowledge is not that of Life.
Journal ArticleDOI
A survey of neuroendocrine phenomena in non‐arthropod invertebrates
TL;DR: In gastropod molluscs, hormones secreted by the cerebral ganglia, glandular ‘dorsal bodies’ and/or optic tentacles are responsible for the control of the development of the reproductive tract, and the activity of the gonads.
Journal ArticleDOI
Ovulation and the fine structure of the stichopus californicus (echinodermata: holothuroidea) fecund ovarian tubules
S. Smiley,R. A. Cloney +1 more
TL;DR: The ovary of Stichopus californicus consists of several size classes of tubules, which insert into a central gonad basis, and contains three classes of microtubules based upon their location, orientation, and lability during fixation.
Journal ArticleDOI
Ultrastructure of the somatic portion of the gonads in asteroids, with emphasis on flagellated-collar cells and nutrient transport.
TL;DR: For the first time, detailed ultrastructural observations have been made of cells and tissues that reveal several features believed to be of universal occurrence in the gonads of asteroids.
References
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Journal ArticleDOI
Effects of Cytochalasins on Mammalian Cells
TL;DR: The cytochalasins—a group of mould metabolites—inhibit movement and cytoplasmic cleavage in cultured cells and at higher doses they cause nuclear extrusion which may lead to total enucleation.
Journal ArticleDOI
Isolation and indentification on meiosis inducing substance in starfish Asterias amurensis.
TL;DR: The neural substance has been renamed gonad stimulating substance (GSS), and the second substance, produced in the ovary, is meiosis inducing substance (MIS), which seems to be non-species specific among starfishes7.
Journal ArticleDOI
Induction of spawning and oocyte maturation by L-methyl-adenine in starfishes.
TL;DR: l-Methyladenine brings about spawning as well as oocyte maturation in vitro in starfish, Marthasterias glacialis, Astropecten aurantiacus and Ceramaster placenta and appears to act only on the full-grown oocytes.
Journal ArticleDOI
Effects of Cytochalasin B upon Microfilaments Involved in Morphogenesis of Salivary Epithelium
TL;DR: Cytochalasin B causes cultured mouse salivary gland epithelium to lose its characteristic shape and to cease undergoing morphogenesis, and Exceptionally large bundles of microfilaments appear in recovered epithelial cells at points where their contractile activity could account for the changes in cell and tissue shape.
Journal ArticleDOI
Mechanism of starfish spawning. ii. some aspects of action of a neural substance obtained from radial nerve
Haruo Kanatani,Hiroko Shirai +1 more
TL;DR: Artificial spawning could be induced without using nerve extract; ovarian fragments immersed in Mg-free sea water released their eggs after a certain interval, while those treated with Ca- free sea water for an appropriate period spawn after subsequent addition of calcium.