1997
DOI: 10.1006/dbio.1997.8736
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A Critical Period of Ear Development Controlled by Distinct Populations of Ciliated Cells in the Zebrafish

Abstract: The zebrafish (Danio rerio) is a useful model system for analyzing development of the inner ear. A number of mutations affecting the inner ear have been identified. Here we investigate the initial stages of otolith morphogenesis in wild-type embryos as well as in monolith (mnl) mutant embryos, which fail to form anterior otoliths but otherwise appear normal. Otolith growth is initiated at 18-18.5 h by localized accretion of free-moving precursor particles. This process, referred to as otolith seeding, is regul… Show more

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Cited by 142 publications
(208 citation statements)
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“…Hair cell kinocilia, which can be observed in live specimens and stain positively for acetylated tubulin, serve to tether otoliths in place at the onset of vesicle formation. These early hair cells are atypical in several regards and are referred to as tether cells to distinguish them from the more typical hair cells that form later (Riley et al, 1997). Despite the presence of kinocilia, the cell bodies of tether cells do not take on the morphology of mature hair cells until 22 hpf (25-26 somites).…”
Section: Specification Of Hair Cells and Supporting Cells In Sensory mentioning
confidence: 99%
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“…Hair cell kinocilia, which can be observed in live specimens and stain positively for acetylated tubulin, serve to tether otoliths in place at the onset of vesicle formation. These early hair cells are atypical in several regards and are referred to as tether cells to distinguish them from the more typical hair cells that form later (Riley et al, 1997). Despite the presence of kinocilia, the cell bodies of tether cells do not take on the morphology of mature hair cells until 22 hpf (25-26 somites).…”
Section: Specification Of Hair Cells and Supporting Cells In Sensory mentioning
confidence: 99%
“…This initial seeding process, which lays the foundation for future otolith growth, occurs only during a critical period from 18 to 24 hpf. Soon after 24 hpf, the supply of visible seeding particles becomes depleted, beating cilia are resorbed, and otolith growth slows dramatically (Riley et al, 1997).…”
Section: Development Of Otolithsmentioning
confidence: 99%
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“…Otolith formation begins with the aggregation of free-floating protein core particles, identifiable at 18-20 h post-fertilization (hpf). Core particles are directed to either of the two developing sensory maculae through the action of ciliated cells that line the otocyst cavity (Riley et al, 1997) where they adhere to the modified stereocilia on the first hair cells (tether cells) at the anterior and posterior poles of the otocyst. These preotoliths are rapidly mineralized with the aragonitic polymorph of CaCO 3 by 24 hpf.…”
Section: Structure and Development Of The Otoconial And Otolithic Memmentioning
confidence: 99%