PMID: 6985611Jan 1, 1980Paper

Intermittent swimming in live sea urchin sperm

The Journal of Cell Biology
B H Gibbons

Abstract

Sperm of the sea urchin Tripneustes gratilla repeatedly start and stop swimming when suspended in seawater and observed by dark-field microscopy. While in the quiescent state, which usually lasts about a second, the sperm assume s shape resembling a cane, with a sharp bend of approximately 3.4 rad in the proximal region of the flagellum and very little curvature in the rest of the flagellum except for a slight curve near the tip. The occurrence of quiescence requires the presence of at least 2 mM Ca2+ in the seawater, and the percentage of sperm quiescent at any one time increases substantially when the sperm are illuminated with blue light. With intense illumination, close to 100% of the sperm become quiescent, and this percentage decreases gradually to approximately 0.3% over a 10(4)-fold decrease in light intensity. An increased concentration of K+ in the seawater also increases the percentage of quiescence, with a majority of the sperm being quiescent in seawater containing 80 mM KCl. The induction of quiescence by light or by increased KCl is completely inhibited by 10 micrometers chlorpromazine, and approximately 90% inhibited by 1 mM procaine or sodium barbital. Sperm treated with the divalent-cation ionophore A23187 swi...Continue Reading

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Citations

Jan 1, 1997·Cell Motility and the Cytoskeleton·K YoshimuraK Takahashi
May 7, 1999·Molecular Reproduction and Development·F AokiK Kohmoto
Apr 20, 2001·Cell Motility and the Cytoskeleton·M J MoritzC B Lindemann
Jan 1, 1995·Cell Motility and the Cytoskeleton·C Shingyoji, K Takahashi
Feb 1, 1981·Proceedings of the National Academy of Sciences of the United States of America·P BouchardC W Bardin
Jan 1, 1980·The Journal of Cell Biology·B H Gibbons, I R Gibbons
Aug 1, 1980·The Journal of Cell Biology·M BessenG B Witman
Jun 1, 1981·The Journal of Cell Biology·S L Tamm, S Tamm
Oct 1, 1982·The Journal of Cell Biology·R E GordonS Puszkin
Sep 11, 1990·European Journal of Biochemistry·H BreitbartH A Lardy
Mar 2, 2011·Cell Structure and Function·Yuka KambaraChikako Shingyoji
May 16, 2002·Proceedings of the National Academy of Sciences of the United States of America·Yi-Hsien Su, Victor D Vacquier
Oct 1, 1990·Journal of Protein Chemistry·S Bandyopadhyay, S K Ghosh
Nov 1, 1980·The Journal of Cell Biology·C B LindemannR Rikmenspoel
Jan 1, 1994·Cell Motility and the Cytoskeleton·A A PaceyM G Bentley
Sep 21, 2004·Cell Motility and the Cytoskeleton·Kathleen A Schmitz-Lesich, Charles B Lindemann
Jun 19, 2009·Cell Motility and the Cytoskeleton·Dominic W PelleCharles B Lindemann
Aug 29, 2007·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Micah D Zuccarelli, Rolf L Ingermann
Mar 2, 2011·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Guangxu LiuRaymond J Thompson
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Jan 1, 1985·Cell Motility·B H GibbonsI R Gibbons
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Jan 1, 1988·Cell Motility and the Cytoskeleton·C B Lindemann, J S Goltz
Jan 1, 1984·Annals of the New York Academy of Sciences·C J Brokaw
Mar 27, 2013·Animal Reproduction Science·B DzyubaO Linhart
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Feb 7, 1983·Journal of Theoretical Biology·J J Blum, M H Hines
Mar 1, 1980·Journal of Muscle Research and Cell Motility·I R Gibbons, B H Gibbons

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