Journal ArticleDOI
The lateral line system at metamorphosis in Xenopus laevis (Daudin).
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Marked changes in the anatomy of the lateral line system occur during the metamorphosis of Xenopus, which takes place at a time when the adult method of locomotion is developed.Abstract:
Marked changes in the anatomy of the lateral line system occur during the metamorphosis of Xenopus. The distribution of rows differs in larva and adult and the orientation and number of organs are modified at metamorphosis. Larval plaques are functional, as shown by recording from their nerves. Two classes of cells with polarized cilia are present in the tadpole well before the orientation of individual organ plaques is rearranged at metamorphosis. The topography of the skin surface around individual plaques changes at metamorphosis. This change may reduce the directional sensitivity of organs. Myelinated inhibitory axons in the lateralis nerve are found only when the tadpole matures. This change takes place at a time when the adult method of locomotion is developed.read more
Citations
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Journal ArticleDOI
Guilds of Anuran Larvae: Relationships among Developmental Modes, Morphologies, and Habitats
Ronald Altig,Gail F. Johnston +1 more
TL;DR: Anurans show a distinct dichotomy among the sources of energy used during larval growth and development, endotrophy and exotrophy, which allows more exact definitions of direct development, ovoviviparity, vivip parity, and related terms.
Journal ArticleDOI
Development of neurogenic placodes in Xenopus laevis.
TL;DR: The development of neurogenic placodes in Xenopus laevis from the time of neural fold closure to larval stages is described and suggests that Delta‐Notch‐mediated lateral inhibition may be involved not only in placodal neurogenesis, but also in the patterning of lateral line neuromasts.
Book ChapterDOI
The Enigmatic Lateral Line System
Sheryl Coombs,John C. Montgomery +1 more
TL;DR: One of the interesting stories of hearing in general, and in aquatic vertebrates in particular, is how the structures associated with hair cell organs play a major role in modifying or channeling the environmental stimulus onto the hair cell receptors.
Journal ArticleDOI
Structure and development of the lateral line
TL;DR: The structuredre and ultrastructure of the neuromast is described, as well as the growth of cupulae and other structures, are described.
References
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Journal ArticleDOI
Das verhalten der seitenorgane der wirbeltiere und ihrer nerven beim übergang zum landleben
Journal ArticleDOI
The Lateralis Organs and their Innervation inXenopus laevis
TL;DR: The innervation and general morphology of the lateralis organs of Xenopus laevis are described and it is suggested that the supporting cells secrete the cupula, but it could not be observed and no terminal swellings could be seen.
Journal ArticleDOI
Fine structure of lateral-line organs of frog tadpoles.
TL;DR: The fine structure of receptor cells suggests the possibility of impulse initiation by the release of a chemical transmitter substance and a system of filaments has been observed in the receptor cells.