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1-12 of 12
Keywords: Motility
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Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2022) 225 (16): jeb243670.
Published: 23 August 2022
... + . Previous research has shown that when pH i is above 7.2–7.3, the dynein ATPase flagellar motors are activated, and the sperm become motile. It has been hypothesized that ocean acidification (OA), which decreases the pH of seawater, may have a narcotic effect on sea urchin sperm by impairing the ability...
Includes: Supplementary data
Journal Articles
Anirudh Kulkarni, Irene Elices, Nicolas Escoubet, Léa-Laetitia Pontani, Alexis Michel Prevost, Romain Brette
Journal:
Journal of Experimental Biology
J Exp Biol (2020) 223 (12): jeb219253.
Published: 17 June 2020
...Anirudh Kulkarni; Irene Elices; Nicolas Escoubet; Léa-Laetitia Pontani; Alexis Michel Prevost; Romain Brette ABSTRACT We present a simple device to mechanically immobilize motile cells such as ciliates. It can be used in particular for intracellular electrophysiology and microinjection...
Includes: Supplementary data
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2017) 220 (14): 2513–2520.
Published: 15 July 2017
... acclimation of males reduced their fertilization probability (lower sperm velocity) when compared with cold-acclimated males, especially when the activation water temperature was also increased beyond the thermal optimum (resulting in a lower proportion of motile sperm with lower velocity). Later...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2017) 220 (3): 347–357.
Published: 1 February 2017
... cells of Cajal (ICC) that are electrically coupled to smooth muscle cells. The myogenically driven component of gastrointestinal motility patterns in fish probably also involves ICC; however, little is known of their presence, distribution and function in any fish species. In the present study, we...
Includes: Supplementary data
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2014) 217 (11): 1876–1886.
Published: 1 June 2014
...Gen L. Takei; Daisuke Miyashiro; Chinatsu Mukai; Makoto Okuno Many studies have been conducted to elucidate the relationship between energy metabolic pathways (glycolysis and respiration) and flagellar motility in mammalian sperm, but the contribution of glycolysis to sperm motility has not yet...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2004) 207 (7): 1203–1216.
Published: 1 March 2004
... simultaneously and the average parameters of the cells' motility are calculated. The time-dependent, two-dimensional distribution of swimming velocities is measured and the three-dimensional distribution is recovered by assuming horizontal isotropy. The mean and variance of the cell turning angle are quantified...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2002) 205 (18): 2885–2890.
Published: 15 September 2002
...R. L. Ingermann; M. Holcomb; M. L. Robinson; J. G. Cloud SUMMARY Maintenance of sperm at pH values less than approximately 7.5 inhibited the onset of motility when sperm were subsequently diluted with water; maintenance at pH values above approximately 8.2 was associated with maximal motility upon...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2001) 204 (7): 1333–1345.
Published: 1 April 2001
... . * e-mail: [email protected] 17 01 2001 15 03 2001 © 2001 by Company of Biologists 2001 flagellum spermatozoon motility axoneme dynein sea urchin Echinus esculentus In this work, we consider an intriguing question in flagellar physiology, namely...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (2000) 203 (3): 575–583.
Published: 1 February 2000
...Catharina Olsson; Susanne Holmgren ABSTRACT The possible inhibitory roles of pituitary adenylate cyclase-activating polypeptide (PACAP), vasoactive intestinal polypeptide (VIP) and nitric oxide in the control of intestinal motility were investigated in the Atlantic cod, Gadus morhua . Circular...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (1998) 201 (10): 1493–1503.
Published: 15 May 1998
... spermatozoon flagellum motility dynein caged ATP axoneme bend initiation bend propagation microtubule sliding presteady-state kinetics viscous load Anthocidaris crassispina Bending in eukaryotic flagella results from active sliding between axonemal microtubules caused by the force exerted...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (1997) 200 (24): 3185–3192.
Published: 15 December 1997
...Christopher C. Gee; Richard K. Zimmer-Faust ABSTRACT The measurement of sperm motility is critical when studying fertilization kinetics and chemotaxis. Analysis of motility has traditionally been carried out on cells in small fluid volumes on microscope slides. Several theoretical treatments...
Journal Articles
Journal:
Journal of Experimental Biology
J Exp Biol (1989) 145 (1): 199–213.
Published: 1 September 1989
... microtubule; the cylinder was presumably held together by nexin links (Fig. ID). In some instances, a few A microtubules also showed signs of degradation. Table 2. Microtubule configurations and motility after various storage times Fig. 1. Electron micrographs of cross-sections of the axoneme...